Buyer's guides
Car gear that pairs with AXLY
Honest buyer's guides for the accessories, tools, and repair parts that complement AXLY — from a phone mount that turns your phone into a free dash cam and digital dashboard, to the exact parts behind common check-engine codes. We only recommend products that pair with the app; AXLY already is your scanner, dash cam, and track timer.
Start here
An OBD2 adapter
AXLY talks to your car through a Bluetooth LE OBD2 adapter — it's the one piece of hardware you actually need. Everything else on this page is optional.
Then
The AXLY dashboard kit
A phone mount and a fast charger are all you need to turn your phone + AXLY into a free dash cam, a live digital dashboard, and a drag-strip track timer.
Tools & Detailing
19 guides-
Best Automotive Brake Cleaners & Degreasers (2024)
The best automotive brake cleaner quickly dissolves brake dust, grease, and oil from rotors, calipers, and engine components without leaving residue — which is critical before any sensor swap, brake job, or electrical connector repair.
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Best Automotive Circuit Testers and Test Lights for DIY Car Repair
The best automotive circuit tester for DIY repair is a self-powered test light or a dedicated automotive circuit tester that can check for power, ground, and continuity without damaging modern vehicle electronics.
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Best Automotive Multimeters for DIY Car Diagnosis (2024)
The best automotive multimeters for DIY mechanics can measure DC voltage, resistance, and current accurately enough to diagnose charging system faults, test sensors, and verify repairs flagged by OBD2 apps like AXLY.
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Best Car Creepers & Mechanic Seats for Home Garages
The best car creeper or mechanic seat makes under-car inspections and repairs safer, faster, and far less physically punishing — a padded, low-profile creeper with smooth-rolling casters is the right starting point for most home mechanics.
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Best Engine Degreasers for Cars in 2025
The best engine degreasers for cars are water-based, biodegradable formulas that emulsify oil and grease without stripping rubber seals, plastic covers, or the protective coatings on sensors and wiring harnesses.
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Best Engine Oil Drain Plug Kits & Magnetic Drain Plugs (2025)
The best engine oil drain plug kits combine a magnetic plug body to trap metal shavings with the correct crush washer or O-ring for a leak-free seal, making every DIY oil change cleaner and safer for your engine.
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Best Car Floor Jacks and Jack Stands for DIY Mechanics
The best floor jack and jack stand combinations for DIY mechanics offer a rated lift capacity that exceeds your vehicle's weight, a low saddle height for low-slung cars, and rigid stands that lock at the correct height for safe underbody access.
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Best Car Interior Cleaning Brush Sets (2024)
The best car interior cleaning brush sets combine multiple bristle stiffnesses and head shapes to safely clean dashboards, air vents, seat stitching, and door-panel crevices without scratching soft-touch surfaces.
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Best Oil Change Kits for DIY Car Maintenance (2025)
The best oil change kits for DIY mechanics bundle a large-capacity drain pan, a universal oil filter wrench, a no-spill funnel, and disposable gloves into one purchase so you have every tool needed for a clean, safe oil change without buying components piecemeal.
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Best Car Polishers for Paint Correction at Home
The best car polisher for most home detailers is a dual-action (DA) orbital polisher, which effectively removes swirl marks and light scratches while being forgiving enough that beginners won't burn through paint.
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Best Car Wash Soaps and Shampoos for 2025: Clean Without Stripping
The best car wash soaps for most drivers are pH-neutral, suds heavily enough to lubricate paint during washing to prevent swirl marks, and rinse without leaving residue—top picks include Meguiar's Gold Class Car Wash and Chemical Guys Honeydew Snow Foam for foam cannon users.
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Best Ceramic Coatings & Paint Sealants for Cars (2025)
The best ceramic coatings and paint sealants bond to your car's clear coat to create a hydrophobic, UV-resistant shield that keeps paint looking glossy and protected for months or even years.
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Best Microfiber Towels for Cars
The best microfiber towels for cars are plush, high-GSM, edgeless cloths like the Chemical Guys Happy Ending Edgeless Towel and The Rag Company Eagle Edgeless 500, which lift dirt and polish paint without leaving swirl marks.
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Best Torque Wrenches for DIY Car Maintenance
The best all-around torque wrench for home mechanics is a 1/2-inch drive click-type like the TEKTON 24340, which covers lug nuts and most engine and suspension bolts; add a 1/4-inch drive wrench for spark plugs and small interior fasteners where over-torquing is easy to do by accident.
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Best Automotive Tool Kits for DIY Car Repair
The best automotive tool kit for most DIYers is a 150–230-piece mechanic’s set with both SAE and metric sockets in 1/4", 3/8", and 1/2" drives, quality ratchets, and a blow-molded case — enough to handle the vast majority of at-home car repairs in one box.
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Best Multimeters for Car Electrical Diagnosis
The best multimeter for car electrical work is an auto-ranging digital meter that reads DC voltage accurately and ideally measures frequency/duty cycle — that combination lets you test the battery, alternator, sensors, and circuits behind many P-code electrical faults.
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Best Car Vacuums for a Clean Interior
The best car vacuum for most people is a cordless handheld with strong suction, a washable filter, and a crevice tool — powerful enough to pull dirt from seats and floor mats but small enough to reach under seats and into cup holders.
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Best Car Detailing Kits for At-Home Cleaning
The best car detailing kit for most people is an all-in-one bucket set that bundles a pH-balanced wash soap, microfiber towels and applicators, an interior cleaner, and a wax or sealant — everything to do a full exterior and interior detail at home without buying products separately.
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Best LED Headlight Bulbs for Brighter Night Driving
The best LED headlight bulb upgrade is one that matches your factory bulb size (e.g.
Power & Battery
11 guides-
Best Battery Isolators & Dual-Battery Kits
The best battery isolators for a second or auxiliary battery are voltage-sensing automatic relays or DC-DC chargers — like the Blue Sea Systems ML-ACR or Redarc SBI12 — that combine batteries only while the alternator is charging and isolate them the moment the engine shuts off, so accessories never drain your starter battery.
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Best Car Batteries for Reliable Starts
The best car batteries for most drivers are AGM units like the Optima RedTop or DieHard Platinum for stronger cold cranking and vibration resistance, while a quality flooded battery like the ACDelco Gold covers everyday commuting on a budget.
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Best Trickle Chargers & Battery Maintainers for Cars (2024)
The best trickle chargers and battery maintainers for cars use multi-stage smart charging to safely top off and maintain a 12V battery without overcharging, extending battery life whether your vehicle sits in storage or gets driven daily.
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Best Car Battery Terminal Cleaners & Protectors for 2024
The best car battery terminal cleaners dissolve corrosion and mineral buildup quickly, restoring strong electrical connections that protect your starter, alternator, and every system your car relies on.
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Best Battery Terminal Protector Sprays for Cars
The best battery terminal protector sprays form a moisture-blocking barrier on cable connections that prevents the corrosion buildup responsible for slow cranks, voltage drop, and failed starts.
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Best Car Battery Testers (2024): Keep Your Vehicle Starting Every Time
The best car battery testers use conductance or load-test technology to tell you instantly whether your battery, alternator, and starter are healthy — no guesswork required.
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Best Car Power Inverters for Running AC Devices Off Your Battery
The best car power inverter for most drivers is a 300-500 watt modified sine wave unit with dual USB ports and a cigarette-lighter plug for charging laptops and small electronics; anyone running sensitive electronics, medical devices, or power tools should step up to a pure sine wave inverter rated for their device's continuous wattage.
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Best Jumper Cables for Cars
The best jumper cables for most drivers are 4-gauge, 20-foot cables with heavy-duty insulated clamps — thick enough to move real current to a dead battery without overheating, and long enough to reach between two vehicles parked nose-to-nose or side-by-side.
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Best Portable Jump Starters for a Dead Car Battery
The best portable jump starter for most cars is a lithium pack rated around 1000–2000 peak amps with a USB output to recharge devices — enough to crank a dead gas engine several times on a single charge, no second vehicle required.
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Best Portable Tire Inflators for Cars
The best portable tire inflator for most drivers is a compact 12V or cordless unit with an accurate digital gauge and auto-shutoff — set your target PSI, attach it, and it stops at the right pressure to clear a low-tire (TPMS) warning in minutes.
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Best Car Battery Chargers & Maintainers
The best car battery maintainer is a smart microprocessor charger (about 1–5 amps) that you leave connected — it recharges a low battery and then automatically switches to a float/maintenance mode that keeps it full without overcharging, ideal for daily drivers and stored vehicles alike.
Engine Repair Parts
18 guides-
Best Brake Pads & Rotors
The best all-around brake upgrade for most daily drivers is a ceramic pad paired with a slotted or drilled rotor, which cuts dust and noise while improving heat dissipation over stock parts; drivers who tow or drive spiritedly should step up to a semi-metallic or performance-compound pad rated for higher temperatures.
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Best Cold Air Intakes for Cars & Trucks (2024)
The best cold air intakes improve throttle response and engine efficiency by routing denser, cooler air into the engine compared to the restrictive factory airbox, with quality options from K&N, aFe Power, and Injen being the most consistently well-regarded.
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Best Engine Coolant Flush Kits for a Healthy Cooling System
The best engine coolant flush kits combine a flush chemical that neutralizes old acid-contaminated coolant with a clear flush procedure, making it straightforward to drain, flush, and refill your cooling system without a shop visit.
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Best Engine Coolant Temperature Sensors: Stop Overheating for Good
The best engine coolant temperature sensors come from OEM-tier suppliers like Bosch, Delphi, and Standard Motor Products, offering the precise resistance curves your ECU expects without the calibration drift that plagues cheap aftermarket parts.
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Best Oil Catch Cans for Cars & Trucks (2024)
The best oil catch cans intercept oily crankcase vapors before they coat your intake valves with carbon deposits, which is especially important on direct-injection and turbocharged engines that have no port-fuel washing.
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Best Wheel Bearing & Hub Assemblies: Stop the Rumble for Good
The best wheel bearing and hub assemblies for most DIYers are from Moog or SKF — both offer pre-assembled, vehicle-specific units that bolt directly in place without a press, eliminating the biggest barrier to a home garage repair.
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Best Engine Air Filters for Better Performance and MPG
The best engine air filters — such as the K&N 33-2304 high-flow cotton filter or an OEM-quality replacement like Fram CA10755 — restore lost power and fuel economy by ensuring your engine receives a clean, unrestricted supply of air.
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Best Engine Coolant & Antifreeze for Cars (2025)
The best engine coolant for your car is one that matches your manufacturer's specification — OAT, HOAT, or IAT — and is either pre-diluted for convenience or a full-strength concentrate you mix 50/50 with distilled water for maximum freeze and boil-over protection.
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Best Engine Oil Additives to Reduce Wear & Restore Performance
The best engine oil additives for most drivers are high-mileage formula treatments that condition seals, reduce metal-to-metal friction, and help quiet noisy valve trains — they work best when your AXLY live data shows elevated oil temperature, rough idle, or a tick that worsens on cold starts.
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Best PCV Valve Replacement Kits
The best PCV valve replacement kits match your engine's exact port and hose-barb size and use a metal or reinforced-plastic valve body rather than brittle stock plastic; ACDelco, Dorman, Standard Motor Products, and Mahle all make direct-fit valves that resolve rough idle, oil consumption, and lean-condition codes caused by a stuck or leaking original valve.
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Best Synthetic Motor Oil for Daily Drivers
The best synthetic motor oil for most daily drivers is a full synthetic in the exact viscosity grade your owner's manual specifies, carrying API SP or ILSAC GF-6 certification — Mobil 1 Advanced Full Synthetic is the safest all-around pick, while high-mileage and turbocharged engines do better with formulas built specifically for those stresses.
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Best Throttle Body Cleaners for a Smooth Idle
The best throttle body cleaners are CRC Throttle Body & Air-Intake Cleaner, Berryman B-12 Chemtool, Gumout Jet Spray, and Sea Foam Top Engine Cleaner — all are safe for oxygen sensors and dissolve carbon buildup that causes rough idle and hesitation.
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Best Spark Plugs & Ignition Coils to Fix a Misfire
The best fix for a misfire code (P0300–P0312) usually starts with a fresh set of iridium spark plugs in the manufacturer-specified heat range, plus replacing any weak ignition coil — together they restore strong, consistent spark and clear the most common cause of a flashing check engine light.
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Best Catalytic Converter Cleaners for a P0420 Code
The best catalytic converter cleaner is a fuel-system additive (such as Cataclean) that you pour into a low tank and drive — it can clean light carbon and sulfur deposits that contribute to a P0420/P0430 code, and is worth trying as a low-cost first step before an expensive converter replacement.
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Best Fuel Injector Cleaners for Rough Idle & Lean Codes
The best fuel injector cleaner is a concentrated PEA (polyether amine) additive such as Chevron Techron or Red Line SI-1 — poured into the tank, it dissolves the injector and intake deposits that cause rough idle, hesitation, and contribute to lean codes like P0171/P0174.
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Best MAF Sensor Cleaners for P0101 & Lean Codes
The best MAF sensor cleaner is a dedicated mass-air-flow cleaner spray (such as CRC MAF Sensor Cleaner) that flash-evaporates with no residue — it safely removes the film on the hot-wire element that causes MAF codes (P0101/P0102) and lean conditions, often restoring proper readings for a few dollars.
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Best Oxygen (O2) Sensors for P0130–P0167 Codes
The best replacement oxygen sensor is a direct-fit OE-grade unit from the original supplier for your engine (often Bosch, Denso, NTK, or NGK) — matching the OE brand and exact part number gives correct readings and reliably clears O2 sensor codes (P0130–P0167).
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Best Gas Caps for EVAP Codes (P0440 / P0455)
The best fix for an EVAP leak code (P0440/P0442/P0455) or a "check gas cap" message is often a new properly-sealing gas cap — a worn or loose cap is the single most common cause, and a correct-fit replacement (such as a Stant cap) is the cheapest first thing to try before chasing the EVAP system.
Interior & Comfort
5 guides-
Best Car Air Fresheners & Odor Eliminators (2025)
The best car air fresheners and odor eliminators neutralize unwanted odors at the source rather than just masking them, using activated charcoal, enzymatic formulas, or long-lasting vent clips.
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Best Cabin Air Filters for Cars & Trucks (2025)
The best cabin air filters trap pollen, dust, and odors before they reach the interior of your car, and they should be replaced every 12,000–15,000 miles or whenever you notice reduced A/C or heater airflow.
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Best All-Weather Car Floor Mats to Protect Your Interior
The best car floor mats are WeatherTech FloorLiners for custom laser-measured fit, Husky Liners X-act Contour for soft-touch protection, Motor Trend FlexTough for budget all-weather coverage, and 3D MAXpider Kagu for premium tiered protection.
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Best Car Seat Covers for Comfort and Protection
For most drivers, the FH Group Neoprene Universal Seat Covers offer the best balance of waterproof protection, comfort, and easy installation, while Covercraft Carhartt SeatSavers are the top pick for heavy-duty work-truck use.
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Best Steering Wheel Covers
The best steering wheel cover for most drivers is a lace-up genuine leather or microfiber-leather cover sized to your wheel's exact diameter, since fit and stitching quality matter far more than material hype.
Exterior & Protection
6 guides-
Best Car Covers for Outdoor and Long-Term Storage
The best car covers for most drivers are breathable, water-resistant multi-layer covers sized to a specific vehicle rather than a generic universal-fit cover, since a snug fit stops wind flapping that scratches paint over time.
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Best Windshield Sun Shades to Keep Your Car Cool
The EcoNour Foldable Car Windshield Sun Shade is the best all-around pick for blocking heat and UV in most vehicles, while WeatherTech SunShades offer the best custom fit for premium protection.
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Best Windshield Wiper Blade Refills for 2024
The best windshield wiper blade refills restore streak-free visibility without replacing the entire wiper assembly, saving money and reducing plastic waste.
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Best DIY Car Window Tint Kits
The best DIY window tint kits use ceramic or carbon film rather than plain dyed film for real heat rejection, and a precut kit matched to your exact vehicle model saves you from the trial-and-error of cutting a universal roll by hand.
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Best Windshield Repair Kits: Fix Chips and Cracks Yourself
The best windshield repair kits use UV-curing resin injected under vacuum to fill chips and small cracks, restoring clarity and structural integrity for a fraction of a professional repair cost.
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Best Windshield Wiper Blades for Clear Visibility
For most drivers, Bosch ICON beam-style wiper blades deliver the best all-around performance with quiet, streak-free wipes in rain, snow, and sleet.
Emergency & Safety
2 guides-
Best Car Escape Tools: Seatbelt Cutters & Window Breakers
The best car escape tools combine a spring-loaded glass-breaking punch with a protected seatbelt-cutting blade in one compact unit that stays mounted within arm's reach of the driver's seat, ready to use if a crash jams the doors or seatbelt buckle.
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Best Emergency Roadside Kits for Your Car
The AAA 76-Piece Severe Weather Road Assistance Kit is the best all-around emergency roadside kit for most drivers, combining jumper cables, first aid supplies, and cold-weather essentials in one bag.
Lighting
3 guides-
Best LED Fog Light Bulbs for Cars & Trucks (2025)
The best LED fog light bulbs produce a wide, low beam pattern in a color temperature that cuts through rain and fog rather than reflecting glare back at you.
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Best Headlight Restoration Kits
The best headlight restoration kits use a multi-step wet-sanding-and-polish process (rather than a single wipe-on coating) to actually remove the oxidized plastic layer, and the best of those also include a UV-blocking sealant to slow the haze from coming back.
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Best LED Interior Car Lights (2024): Brighten and Customize Your Cabin
The best LED interior car lights deliver noticeably brighter, longer-lasting illumination than factory incandescent bulbs and are available as direct drop-in replacements or peel-and-stick strip kits that anyone can install in minutes.
Gifts
3 guides-
Best Gifts for a Teen Who Just Got Their License
The best gifts for a teen who just got their license are practical safety and convenience items they will actually use every day, like a visible anti-theft steering wheel lock, a real ice scraper, and a Bluetooth FM transmitter for a car without built-in Bluetooth, rather than another phone mount or air freshener they already have.
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Best Gifts for the Mechanic Who Has Every Tool
For the mechanic who already owns every wrench and socket set, the best gifts solve a problem they haven't fixed yet — seeing inside a tight space, torquing with precision instead of feel, or tracking a noise to its source — rather than duplicating what's already on the pegboard.
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Best Stocking Stuffers Under $25 for Car People
The best stocking stuffers under $25 for car people are small, genuinely useful items they would not buy for themselves, like a keychain flashlight, a Bluetooth key tracker, or a real fix for sticky cup holders, rather than novelty gag gifts that end up forgotten in a junk drawer.
Towing & Hauling
3 guides-
Best Hitch-Mounted Cargo Carriers
The best all-around hitch-mounted cargo carrier is a steel or aluminum basket rated for at least 500 lbs that bolts into a 2-inch receiver, since it handles rooftop-unfriendly loads like coolers and camping gear without touching your trailer wiring or tongue weight.
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Best Tow Straps & Recovery Kits for Getting Unstuck
The safest tow or recovery strap is rated at least three times your vehicle's weight, made of woven nylon or polyester with reinforced loop ends instead of metal hooks, so it can absorb shock loads without snapping or becoming a projectile.
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Best Trailer Hitch Locks
The best trailer hitch locks are heavy-duty, weather-sealed pin locks like the Master Lock 377DAT Receiver Lock and the CURT 23086 Coupler Lock, which prevent thieves from unhitching your trailer or stealing your hitch-mounted accessories.
Tires & Wheels
4 guides-
Best Locking Wheel Nuts (Wheel Locks) to Deter Wheel Theft
The best wheel locks use a unique, hard-to-duplicate key pattern — such as McGard's cone-seat or spline-drive design — matched to your wheel's exact seat type and thread pitch, which makes your wheels far less attractive to thieves than a set of standard lug nuts.
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Best Tire Chains & Snow Traction Devices
For most passenger cars and crossovers, low-profile cable tire chains like the Security Chain Company Super Z6 give the best balance of grip, clearance, and easy installation; trucks and SUVs with more wheel-well room do better with heavier ladder-style chains, and vehicles with very tight clearance or chain-restricted areas should use a fabric traction device like AutoSock instead.
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Best Tire Pressure Monitoring Systems (TPMS) for 2024
The best tire pressure monitoring systems provide real-time pressure and temperature readings for all four tires, alerting you before a low-tire situation causes a blowout or uneven wear.
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Best Tire Repair Plug Kits for Fixing Punctures Yourself
A quality tire plug kit with a rated reamer and insertion tool lets most drivers seal a small tread puncture in minutes without removing the wheel, though the repair should still be inspected or backed up with an internal patch when convenient.
AXLY Dashboard Kit
2 guides-
Best Phone Mounts for Using Your Phone as a Car Dashboard
The best phone mount for running your phone as a car dashboard is a rigid vent, suction, or MagSafe mount with a secure cradle that holds the phone at eye level without blocking your view — that lone accessory turns AXLY into a free dash cam, a live OBD2 gauge display, and a 0–60 / quarter-mile track timer.
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Best Car Phone Chargers to Keep Your Dashboard App Powered
The best car charger for running your phone as a dashboard is a USB-C Power Delivery (PD) charger of at least 30W per port — enough to keep the screen, GPS, and Bluetooth running as a dash cam and gauge display without the battery slowly draining.
Fix the right thing — diagnose first with AXLY
AXLY.pro reads your codes and live data free, so you buy the part you actually need. Pair it with any Bluetooth OBD2 adapter.
Wear the code
All merch →Shirts, mugs and garage gear. Printed when you order, free US shipping.
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