A Planted Technology seat bracket for the BMW Z3 coupe and M Coupe, 1996 to 2002. Part number SB008.
The Z4 and its M versions take SB126, so check the generation.
The clown shoe
BMW built the Z3 coupe because a few engineers wanted to, and it looks like nothing else on the road. The M Coupe with the S50 or S54 straight six is the one people want and values have gone a long way.
The coupe body also fixed the Z3 roadster’s biggest problem, which was a lack of torsional stiffness. The hatchback shape roughly tripled it, which is why the coupe drives so much better.
What that means for the seat
A stiff shell transmits what the car is doing rather than absorbing it, and you feel more through the seat than you would in the roadster. Getting held properly is worth more here as a result.
Space
Tight round the shoulders with a fixed roof and a hard headroom limit. Tell us your height and build before you order.
Have you written anything about this exact product?
Yes, we have covered this exact product: Lexus Planted Technology Frames Updated For 2026, and Customer Car: Subaru Impreza With Corbeau RRS Seats and Planted Technology Brackets. That is first-hand coverage from our own builds and showroom, not brochure copy.
Will this fit my car?
This frame is made for the BMW Z3 M Coupe. Chassis code and years matter more than the badge, as floor pans change between generations, so if your car sits near a changeover year, send us the registration and we will confirm before you order.
Which seats does it take?
Check the bolt pattern in the specification against your seat. The Compatible seats tab above lists what bolts straight on. If your seat is not listed, tell us what you run and we will confirm the fit.
Do I keep fore-and-aft adjustment?
Only with a sliding runner between the frame and the seat, which is a separate part on Planted frames. If more than one person drives the car, budget for the runner. Our guide to sliding runners explains the options and widths.
Is this for the driver or passenger side?
Both sides are available on this listing, pick driver or passenger side at the point of order (sides listed are for right-hand-drive cars). Left-hand-drive car? Ask us, as the sides swap over and availability varies by model.