Product Description
1970-1973 Mercury Marquis Rear Lap Belt
- Rear driver, passenger or center
- One belt, sold individually
- Fixed lap strap
- Steel button buckle
- FMVSS 209 and 302 rated
A full-size Mercury Marquis has a rear bench wide enough for three adults, and every one of those positions deserves a sound belt. Seatbelt Planet's rear lap belt is sold individually and can be used at the rear driver, passenger or center spot. Each is a fixed strap with a steel button buckle and its own hardware, so buy one for every Marquis rear seat that needs it.
Fitment
Listed for the rear seating positions of 1970-1973 Mercury Marquis models, whether driver side, passenger side or center.
Webbing Colors
The color chart has 52 webbing options, 13 at premium pricing. Match the belts already in the car or redo the whole back seat in one shade.
Why Replace?
Big Mercurys often carried families for years, and the rear belts show it. New straps restore a working restraint for every rider on the bench.
Belt Care
Lay the belts across the cushion when not in use, wipe them down with mild soap, and keep buckles off the carpet.
About the 1970-1973 Mercury Marquis
The Marquis was Mercury's full-size flagship in these years, with hidden headlights, a long hood and a cabin trimmed for comfort. Brougham versions added even more luxury touches.
Pre-Install Checklist
Lift the rear seat bottom and confirm that each anchor hole you plan to use is intact and clean.
Good to Know
Sold as one belt; order one per position.
Because it fits any rear position, one listing covers the whole bench.
Order three to outfit the full rear seat in a single color.
Fixed lap belts preserve the clean look of a luxury cabin.
Seatbelt Planet sews each belt after purchase.
These cars make superb highway cruisers, and complete rear belts make them family friendly.
Because this belt is sold individually and fits any rear position, it is a flexible way to fix only the seats that need attention. Some owners replace one damaged belt, while others order three to redo the entire bench in one color.
Full-size Mercury rear seats are deep and comfortable, which is exactly why people like to ride back there on long trips. A fixed lap belt lies flat on the cushion and does not intrude on the plush upholstery.
For the Marquis back bench, each strap is certified by its maker to FMVSS 209 and 302.
Check whether your car has a center anchor pair before ordering three, since some cars were built or re-trimmed without one.
Marquis sedans, hardtops and wagons all used generous rear benches, so confirm your exact body style and anchor layout before you order.
Order today, belt the bench tomorrow.
Every classic car seat in back deserves one.
Frequently Asked Questions
Which rear seat does it fit?
Seatbelt Planet lists it for the rear driver, passenger or center position.
How many come in one order?
One belt.
Does it retract?
No.
Is hardware included?
Yes.
Which years?
1970-1973 Mercury Marquis.
Questions about fit?
Call 574-226-6676.
1970-1973 Mercury Marquis Rear Lap Belt specifications
- Seatbelt Planet aftermarket seat belt / restraint product (application per listing title)
- Vehicle application from listing: 1970-1973 Mercury Marquis Rear Lap Belt
- 2-point lap belt style as titled
- 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 — 1970-1973 Mercury Marquis Rear Lap Belt
- Confirm this listing matches your vehicle (1970-1973 Mercury Marquis Rear Lap Belt), 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.
1970-1973 Mercury Marquis Rear Lap 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 — 1970-1973 Mercury Marquis Rear Lap 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 1970-1973 Mercury Marquis Rear Lap Belt?
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.
