M52/M54 HIGH FLOW MANIFOLD — E46 / E36 SWAP
M52/M54 HIGH FLOW MANIFOLD — E46 / E36 SWAP
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E46 6-cyl · headers onlySCM5254MANI
304
Stainless
50
mm outlet
10
kg
BMW E46 six-cylinder · left-hand drive · 304 stainless · connects to your existing exhaust
01Overview
Schmiedmann high-flow headers for the six-cylinder E46 — the tubular replacement for the restrictive cast manifold the car left the factory with.
Built from 304 stainless steel with a 50 mm outlet, so it opens the exhaust up right where it matters most: at the head.
It goes straight onto the exhaust you already have — the 50 mm outlet picks up the system that's on the car, so you're not rebuilding the whole line to fit it. Schmiedmann themselves list it as a spare part and for do-it-yourself and special-project builds, which is exactly what most people use it for.
Popular on drift and track builds for the same reason: you decide what goes behind it. And because it bolts to the head rather than the shell, it goes on an M52TU or M54 swapped into an E36 just the same.
Built from 304 stainless steel with a 50 mm outlet, so it opens the exhaust up right where it matters most: at the head.
It goes straight onto the exhaust you already have — the 50 mm outlet picks up the system that's on the car, so you're not rebuilding the whole line to fit it. Schmiedmann themselves list it as a spare part and for do-it-yourself and special-project builds, which is exactly what most people use it for.
Popular on drift and track builds for the same reason: you decide what goes behind it. And because it bolts to the head rather than the shell, it goes on an M52TU or M54 swapped into an E36 just the same.
02In The Box
- High-flow sport manifold, 304 stainless steel
- 1 piece — covers the car
Two ways to run it
- Straight onto what you have. The 50 mm outlet connects to your existing exhaust — the route most builds take
- Or run Schmiedmann's 300-cell catalyst section behind it, the section this manifold was drawn around
Tell us what exhaust is on the car and we'll tell you which way suits it better.
03Specification
Part numberSCM5254MANI
Material304 stainless
flange is mild steel
flange is mild steel
Inlet pipe42 × 30 mm
Outlet pipe50 mm
Weight10,00 kg
Package size73 × 37 × 17 cm
Quantity per car1 pc
ApprovalNot E-marked
04Fitment
Fits BMW E46, all six-cylinder models — the M52TU and M54 engines.
Built for left-hand-drive cars. Not for the xi all-wheel-drive models or the four-cylinder engines.
Send us a photo of your engine bay and we'll line it up with you before you order.
Built for left-hand-drive cars. Not for the xi all-wheel-drive models or the four-cylinder engines.
Running a swap?
It follows the engine, not the shell. The manifold bolts to the cylinder head — so if you've dropped an E46 M52TU or M54 into an E36, this is the header for it. That combination is all over the drift and track scene, and it is one of the reasons this part sells.Send us a photo of your engine bay and we'll line it up with you before you order.
05Fitting Notes
Guide time4–5 hours
Hand these to whoever fits it — they save a lot of time on the car.
01One manifold has a pressed dent from the factory. That is meant to be there — it is what gives clearance to the gearbox.
02Mark each lambda probe before it comes out, so it goes back in the same position. The wires are never cut or extended.
03Expect the usual adjustment that comes with any header swap — allow for it rather than fighting it on the day.
Worth ordering with it: stud bolts 11-12-7-593-376. They are shorter than standard, which makes getting the nuts started far easier in a tight space. Schmiedmann's own recommendation.
