A Sparco direct fit sub-frame for the Ford Sierra Cosworth 4×4. Part number 00499066.
These cars are worth serious money now, and that changes the calculation on a seat swap. A direct fit frame is reversible: the original seats and their runners come out whole and go back in when the car is sold or shown. Drilling a floorpan and fabricating brackets is not reversible, and on a Cosworth that is a permanent mark against the car.
Keep the original seats, keep the original fixings, and put them somewhere dry.
Fitment
Steel, on the 345mm by 271mm base mount pattern, picking up on the factory floor mounting points. Sparco, OMP and Corbeau base mount seats all use that spacing.
Side mount shells need side mounts or adaption bars over the frame.
Ordering
One frame per seat, handed. Choose RHD driver or RHD passenger and order twice for both sides.
Tell us the seat when you order and we will confirm the pairing. Frames in this range vary between complete replacements and adaption bars depending on the car, and the photograph on the page is illustrative.
Given the age, have a look at the condition of the floor around the mounting points first.
Have you written anything useful for my car?
Yes: Safety Devices Ford Sierra Roll Cages Updated. Those are written around the same car, from real fittings and customer questions, so they are worth a look before you decide.
Will this fit my car?
This frame is made for the Ford Sierra Cosworth 4x4. 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?
It takes seats drilled 345mm x 271mm (the Sparco and OMP seat pattern). 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 Sparco frames. If more than one person drives the car, budget for the runner. Our guide to sliding runners explains the options and widths.
Base mount or side mount, and does it matter?
This is a base-mount frame: the seat bolts down through its base, the simpler stack that suits seats with a flat bottom and keeps the install low-fuss. Our guide on base mount versus side mount explains the whole fitting stack.
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.
