A Planted Technology seat bracket for the Pontiac Firebird and Trans Am, 1982 to 1992. Part number SB140.
We also list this under the Trans Am name as SB140-4964, because that is what a great many owners call their car and search for. Same bracket.
The Firebird takes its own part here, and the Camaro does not share it
Worth noting. For this generation the Camaro takes SB058, a separate number, despite the two cars being built alongside each other on the F-body. From 1993 they do share under SB059.
So order on the badge as well as the year for these years.
Why they get built
Cheap, rear wheel drive, and they take an LS engine without much argument. The GTA and the Formula are the versions with a following, and the 1989 Turbo Trans Am with the Buick turbo six is the rare one.
Practical
Third generation F-bodies rust and few were cherished. Get the carpet up and look before you spend.
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 Pontiac Firebird/Trans Am (1982-1992). 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.