Spare Tire Jack Kit

What Is a Spare Tire Jack Kit?

A spare tire jack kit is one of the most important — and most overlooked — safety components stored in your vehicle. Its primary purpose is to give you everything you need to change a flat tire in a roadside emergency, without having to wait for a tow truck or roadside assistance. Most factory kits are tucked away under a seat, in the trunk, or beneath the truck bed, and many drivers never think about them until they suddenly need one.

A complete spare tire jack kit typically includes a scissor jack to lift the vehicle off the ground, a multi-piece lug wrench to remove and install wheel nuts, and — on trucks and SUVs with underbody-mounted spares — a special lowering rod used to release the spare tire from its storage location beneath the bed. Some kits also include wheel chocks, a jack handle extension, and a storage bag to keep everything organized and protected from corrosion.

Why Your Jack Kit Needs to Be in Good Condition

The most common problem drivers discover with their spare tire jack kit is finding it missing or incomplete — often at the worst possible moment. If you've recently purchased a used vehicle, it's worth verifying that all components are present and functional before you ever need them. Inspect the scissor jack's screw threads for rust or damage, since a compromised jack can fail under load. Check that the lug wrench fits your wheel nuts and that any lowering rod is intact and free of bends.

Even if your original kit is still in the vehicle, age and exposure to moisture can take a toll. Rubber components crack, metal parts corrode, and plastic pieces become brittle. A periodic inspection — and replacement when needed — is a simple step that can save you from being stranded on the side of a highway.

What to Look for When Buying a Replacement Spare Tire Jack Kit

• Vehicle-specific fitment: Lift height requirements and lug nut sizes vary by make, model, and year. Always verify compatibility before purchasing.
• Complete kit contents: Confirm the kit includes every component — jack, lug wrench, handle rods, and any accessories specific to your vehicle's spare tire storage system.
• Jack capacity: Ensure the scissor jack is rated to handle your vehicle's weight, particularly for heavier trucks and SUVs.
• Material quality: Look for kits with corrosion-resistant hardware, since these tools spend most of their lives sitting in damp storage areas.

Top Brands for Spare Tire Jack Kits

Dorman is the leading aftermarket name in this category. Founded in 1918, Dorman Products is an American manufacturer of aftermarket automotive parts that focuses on identifying parts that frequently fail on cars, trucks, and other motor vehicles — and developing reliable repair and replacement products. A key part of their approach has been the development of their OE FIX™ parts line, designed to enhance original equipment by addressing common failure points. For spare tire jack kits, Dorman offers vehicle-specific replacement kits engineered to restore the factory-level functionality drivers depend on in an emergency.