A Planted Technology seat bracket for the Nissan 200SX on the S12 chassis, 1984 to 1988. Part number SB203.
The S12 is the Silvia of that generation. It is not the S13 or S14 that most people mean when they say 200SX, and it has nothing to do with the B14, which is a front wheel drive Sentra coupe sold under the same name in America.
Three quite different cars, one badge. Check the chassis code before ordering.
The forgotten Silvia
The S12 sits between the classic S110 and the S13 that started the drift era, and it is the one nobody talks about. That is why they are scarce now: nobody thought to save them.
The surviving ones tend to be owned by people who know exactly what they have, and a reversible installation matters accordingly. The bracket picks up the factory mounting points so nothing is cut.
Practical
Forty years old and rarely cherished. Get right under the carpet 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 made for the Nissan 200SX. 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.