Product Description
1987-2007 Peterbilt 378, Driver or Passenger, Seat Belt
Seatbelt Planet's 1987-2007 Peterbilt 378, Driver or Passenger, Seat Belt. 3 Point Retractable Lap & Shoulder Seat Belt Kit with End Release Buckle
The Seatbelt Planet 1987-2007 Peterbilt 378, Driver or Passenger, Seat Belt, sold by Vintage Car Radio, provides a single-position replacement for the front seats of these classic Class 8 conventional trucks.
The Peterbilt 378 was a long-running conventional model valued for its durability, straightforward design and suitability for both long-haul and vocational work. Many examples accumulated high mileage in fleet or owner-operator service, and the driver’s seat belt in particular often shows the greatest wear. In other cases, a cab refresh or seat replacement leaves only one side needing attention. A full matched pair is not always required.
This Seatbelt Planet product is a single 3-point lap-and-shoulder belt configured for either the driver or passenger position in the 1987-2007 Peterbilt 378. The webbing is heavy-duty, UV-resistant polyester selected for strength and longevity under the demanding conditions these trucks often see, available in colors that can be coordinated with common interior finishes. The buckle is a solid metal design with a positive, mechanical latch. Matching hardware allows the belt to integrate cleanly with the existing cab.
The belt is manufactured to meet the performance requirements of FMVSS 209 for tensile strength, controlled elongation, abrasion resistance, and buckle function. Adjustment range accommodates different occupants while preserving the upright, practical seating position typical of these conventional trucks.
Installation is intended to work with the original mounting points. All necessary fasteners are included. In most cases, only limited preparation is required. Important: torque values and the assembly sequence must be taken exclusively from the instructions supplied with the kit. Correct tightening is essential for the system to perform as designed.
Owners or fleet operators who only need to replace one front belt gain a practical, focused improvement. The selected seat receives modern three-point protection without forcing a complete front-seat replacement, and the 378’s durable, no-nonsense character remains unchanged.
Vintage Car Radio supplies this Seatbelt Planet belt with the correct hardware and guidance, keeping the installation process clear for both professional workshops and experienced owners.
The result is a simple, rugged update that restores proper restraint exactly where it is needed. The Peterbilt 378 keeps its identity as a classic Class 8 conventional; the chosen front seat is brought back to a reliable standard. Order from Vintage Car Radio and equip the seat that requires attention with a restraint solution matched to this hard-working truck.
Questions About the 1987-2007 Peterbilt 378, Driver or Passenger, Seat Belt
Will this fit my 1987-2007 Peterbilt 378?
It's listed specifically as the 1987-2007 Peterbilt 378, Driver or Passenger, Seat Belt.
Can I match the 1987-2007 Peterbilt 378 belts to my interior?
There are 52 webbing colors in the menu, including Miami-Blue, Red-Edge, Purple, Dark-Green, and Glacier-Blue.
Are there special installation instructions?
Follow the supplied instructions for torque values and assembly order. Seatbelt Planet stresses that correct tightening is essential for the system to work as designed.
Is this 1987-2007 Peterbilt 378 belt set built to safety standards?
According to Seatbelt Planet, the belts for this 1987-2007 Peterbilt 378 application meet or exceed Federal Motor Vehicle Safety Standards 209 and 302.
1987-2007 Peterbilt 378, Driver or Passenger, Seat Belt specifications
- Seatbelt Planet aftermarket seat belt / restraint product (application per listing title)
- Vehicle application from listing: 1987-2007 Peterbilt 378, Driver or Passenger,
- Tested and certified to meet FMVSS 209 and FMVSS 302 (certification tag on belts)
- Sold as aftermarket replacement — confirm buckle style, retractable vs fixed, and seat type before order
- Complete belts are preferred; mixing buckle/tongue brands is not recommended (components are designed to work together)
- 1-year manufacturer warranty for component issues from ship date (excludes abuse, accident damage, or disassembly)
- 90-day satisfaction guarantee per Seatbelt Planet (installed returns may incur restocking fee)
Installation Tips — 1987-2007 Peterbilt 378, Driver or Passenger, Seat Belt
- Confirm this listing matches your vehicle (1987-2007 Peterbilt 378, Driver or Passenger,), seat type (bench vs bucket), and buckle/retractor style before installing.
- Inspect mounting points for solid metal structure. Seatbelt Planet products are aftermarket — fabrication or adapters may be required on some vehicles.
- Use appropriate grade hardware. Some listings sell mounting hardware separately.
- Install a complete belt assembly when possible; do not mix unmatched buckle and tongue brands.
- After install, verify full extension, retraction (if applicable), and latching before driving.
- If unsure, use a professional installer. Improper installation can cause serious injury.
Selection help: Seatbelt Planet FAQ / guides at seatbeltplanet.com/faq.html · phone 405-736-0088.
Vintage Car Radio does not offer installation.
1987-2007 Peterbilt 378, Driver or Passenger, Seat Belt manuals
- Seatbelt Planet FAQ (FMVSS, warranty, returns)
- Seatbelt Planet common questions / selection help
- Use any instruction sheet packed with your order for model-specific steps
Manufacturer: Seatbelt Planet · 405-736-0088
One-Year Seatbelt Planet Warranty
Per Seatbelt Planet, seat belts are covered under a one-year manufacturer warranty for component issues from the date shipped. Warranty returns are not accepted if there has been obvious abuse, the belt was involved in an accident, or the belt has been disassembled / components removed.
Seatbelt Planet also states a 90-day satisfaction guarantee; installed returns may be subject to a restocking fee. RMA required — contact Seatbelt Planet or Vintage Car Radio at 844-802-4499 / 574-226-6676.
Vintage Car Radio does not install seat belts.
FAQ — 1987-2007 Peterbilt 378, Driver or Passenger, Seat Belt
Are these FMVSS / DOT approved?
Seatbelt Planet states belts are tested and certified to FMVSS 209 and 302; the certification tag is on the belt.
Can I replace only one side?
Seatbelt Planet recommends installing a complete belt — buckle and tongue are designed to work together.
Will this fit 1987-2007 Peterbilt 378, Driver or Passenger,?
Match the years, make/model, and seat position in the title. Call Seatbelt Planet at 405-736-0088 if you need a custom belt.
Do you install?
No.
Need help?
844-802-4499 / 574-226-6676, or Seatbelt Planet 405-736-0088.
Specs
Installation Tips
Manuals
Warranty
One-Year Seatbelt Planet Warranty
Per Seatbelt Planet, seat belts are covered under a one-year manufacturer warranty for component issues from the date shipped. Warranty returns are not accepted if there has been obvious abuse, the belt was involved in an accident, or the belt has been disassembled / components removed.
Seatbelt Planet also states a 90-day satisfaction guarantee; installed returns may be subject to a restocking fee. RMA required — contact Seatbelt Planet or Vintage Car Radio at 844-802-4499 / 574-226-6676.
Vintage Car Radio does not install seat belts.
