Planted Technology seat brackets for the Pontiac Firebird Trans Am. Part number SB140-4964.
The same bracket as our 1982 to 1992 Firebird listing under SB140, listed here under the Trans Am name because that is what a great many owners call their car and search for.
Send us the year, because Trans Am is a trim level
Pontiac applied the name across most of the Firebird’s life, from 1969 to 2002, so it does not identify a generation on its own. The generations take genuinely different parts: 1967 to 1969 is SB219, 1970 to 1974 is SB220, and from 1993 the Firebird shares with the Camaro under SB059.
Tell us the year and the engine and we will name the part. We are adding the year data to this listing.
Practical
Third and fourth generation Firebirds rust and few were cherished. Get the carpet up and look at the metal round the mounting points before you spend anything.
Handed, so order twice for a pair.
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 car-specific, so match the vehicle in the product name to your exact car and generation. If you are unsure, 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.