A Planted Technology seat bracket for the Lexus LS 400, second generation on the XF20 chassis, 1994 to 2000. Part number SB393.
The car Lexus built to prove a point
Toyota spent an extraordinary amount developing the original LS 400 specifically to embarrass Mercedes, and the second generation refined it further. The 1UZ V8 is one of the most durable engines anyone has built and these routinely run past three hundred thousand miles.
Which is why they get seated
Two quite different reasons. VIP style builds and drift chassis, where the 1UZ and rear wheel drive are the appeal. And high mileage cars where the original powered seat has finally failed after twenty five years and replacing the mechanism costs more than a shell.
Those want opposite products, so tell us which you are.
The electronics are substantial
Powered adjustment in several planes, memory, heating and a great deal of wiring under the seat. Tell us the specification before anything comes out, and expect it to be a wiring job as much as a mechanical one.
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 Lexus LS 400 [2nd Generation / XF20 Chassis] (1994-2000). 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.