A Planted Technology seat bracket for the BMW 5 Series on the E39 chassis, 1995 to 2003. Part number SB186.
The E39 sits between the E34 and the E60, and BMW changed the floor at both ends of that run, so the chassis code is the fitment.
If it is an M5
Values on a good E39 M5 have gone somewhere serious and originality now counts for real money. The standard sports seats are part of that, and on the M5 they are specific to the car rather than shared with the range. If they come out, store them and their fixings properly and label them, because a matching pair is not something you replace cheaply.
The saloon body is not the constraint
An E39 is a big car inside, so shell width is less of an issue than it is in a 3 Series and you have more choice over the seat. What does matter is how far back you sit once a bucket goes in, because the E39 wheel is set fairly far forward. Tell us your height and we will talk it through.
Practical checks
Look at the metal round the mounting points with the carpet up, given the age. Tell us about side airbags before anything comes out.
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 5 Series. 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.