Seat Belt

Replacement belts versus harnesses

Two different needs show up here. Replacement belts restore a worn, frayed or locked-up factory belt, usually with a retractor, belt and latch. Harnesses, like four-point and five-point units from Corbeau and MasterCraft Safety, are built for off-road or competition seats with a roll cage or harness bar.

A harness is not automatically a street upgrade. Many vehicles are designed around the factory three-point system with airbags, and race harnesses may not suit road use or your seats. Check local regulations and your vehicle's design.

Belt types you will see

Sample listings include:

• Retractable three-point shoulder belts for front seats, sold individually, often described as meeting Federal Motor Vehicle Safety Standards.
• Non-retractable lap belts, usually 60 inch rear belts for older vehicles with rear bench seats.
• Two, three, four and five-point harnesses in 2 inch and 3 inch webbing.
• Extension brackets that move the buckle receptacle for a better fit.

What to compare

Check position (front or rear, driver or passenger), the type of latch, and whether the kit includes the retractor, hardware and female buckle. Color matters for matching the interior; tan, black, red and olive drab are shown here. For harnesses, compare the number of points, webbing width, and whether the mounting is bolt-in, snap-in or wrap-around.

Harness mounting points must be anchored to structure that can take the load. Bolting a harness to a thin floor pan or a seat frame not intended for it is unsafe.

Installation and compatibility

Seat belts are a primary safety system. Install them exactly as the manufacturer directs, use the specified hardware and torque, and do not modify or reuse belts that have been in a crash, since the webbing and retractor may be damaged. If you are unsure about anchor points or the vehicle's restraint system, have a qualified shop do the work.

Confirm fitment for your exact year, make, model, cab and seat configuration, and check the manufacturer's specifications. Belts for older vehicles and newer models often use different buckle styles and sensor arrangements.

Keep the buckle and retractor clean and dry, and test the latch every so often. Dirt, sand and moisture from trail use can affect how smoothly a retractor spools and how reliably a latch engages, so a quick check is worthwhile.

Inspection and mistakes to avoid

A belt can look fine and still be past its life. Pull the webbing fully out and inspect its length for fraying, cuts, stiff or discolored areas and any sign of melting from friction. Let it retract and confirm it spools smoothly, then yank it sharply to check that the lock engages. Buckles should click firmly and release cleanly.

• Do not paint, bleach or dye webbing, because chemicals can weaken the fibers.
• Keep the belt from rubbing on sharp edges, such as a roll bar bracket or seat frame.
• Check that rear belts and extension brackets are compatible with the receptacle on the vehicle.
• If you are mixing a harness with factory seats, confirm that the seat is designed for it, since the load path differs from a standard belt.