If you own a G80 M3 or G82 M4 with M Carbon bucket seats, you've probably already seen it. The seatbelt runs over the upper bolster and rubs the same spot every time you buckle up. Over time the leather goes shiny and the Alcantara starts to pill, right where you see it every time you open the door.

This BMW M Carbon bucket seat belt protector set from Wunderworks stops it before it starts. It puts a layer of matching leather and Alcantara between the belt and your seat, so the belt wears the protector, not the upholstery.

How the M Carbon Bucket Seat Belt Protector Works

Each protector wraps the upper seat area where the belt makes contact. An integrated snap-button strap holds the factory seatbelt webbing in its correct position, so it stops sliding and rubbing across the bolster every time you get in, get out, or lean into a corner. The belt still works exactly as BMW designed it. It just stops grinding into your seat.

Matched to Your Factory Interior

These don't look like an add-on. Each set uses real leather and Alcantara with factory-matched stitching, in seven color combinations designed to match BMW M interior upholstery. Pick the color that matches your seats and they blend right in. Designed and made in Poland.

No Cutting, Fully Reversible

The protectors attach with integrated Velcro fastening. Nothing gets cut, drilled or glued, and your seats stay exactly as they left the factory. Take them off before a sale or a detail and there's no trace they were ever there.

What's Included

  • 2 x seat belt strap protectors (driver and passenger)

Key Features

  • Prevents seatbelt wear on M Carbon bucket seat leather and Alcantara
  • Integrated snap-button strap keeps the seatbelt webbing in position
  • Real leather and Alcantara with factory-matched stitching
  • Seven color options to match BMW M interior upholstery
  • Velcro fastening, no cutting, drilling or permanent modification
  • Designed and made in Poland

Vehicle Fitment

Fits BMW models equipped with factory M Carbon bucket seats:

  • BMW M3 Sedan / G80 (2021-2026): M3, M3 Competition, M3 Competition xDrive
  • BMW M3 Touring / G81 (2023-2026): M3 Competition Touring xDrive
  • BMW M4 Coupe / G82 (2021-2026): M4, M4 Competition, M4 Competition xDrive
  • BMW M4 Convertible / G83 (2022-2026): M4 Competition xDrive Convertible

Your car must have the factory M Carbon bucket seats. Does not fit standard M Sport seats, the M4 CSL M Carbon full bucket seats, or the M3 CS and M4 CS. Not yet available for Yas Marina Blue interiors or the G87 M2.

Installation Notes

Installation takes a few minutes per seat with no tools. Choose the color that matches your seat upholstery before you order.

  1. Position the protector over the upper seat area where the seatbelt makes contact.
  2. Secure it with the integrated Velcro fastening so it sits snug and flat against the seat.
  3. Route the factory seatbelt webbing through the snap-button strap and close the snap.
  4. Buckle and unbuckle a few times to confirm the belt moves freely and retracts normally.
  5. Repeat on the other seat.

Want the whole seat covered? The Wunderworks 3-Piece Protection Kit adds upper and lower bolster protectors to this set.