Upon inspection you will be able to see the flanges are rusted and corroded and often split or starting to. It is common for this seal to fail causing the exhaust to blow which can cause MOT failure or advisory’s. On occasions the exhaust may need removing for upgrade or perhaps for access to carry out sub frame repair, at which point the original flanges will need to be grinded to be removed and a suitable replacement will be required.
SYMPTOMS OF FAULT
THE FAULT
The OEM cast iron flanges rust / corrode and eventually split causing exhaust leaks
A common fault on E46 M3 models is failure of the exhaust flanges caused by rust / corrosion of this part. Four flanges are used to clamp together and seal the intermediate pipe to the rear muffler / backbox. These are constructed of cast iron (despite being fitted to a stainless steel exhaust) and inevitably deteriorate and split. These parts are integral to the intermediate pipe and rear muffler and are not available separately from BMW. The only option until now has been to buy a new centre section from BMW at vast expense. Or to buy new flanges, cut them up, fit and re-weld them- a tricky job. None of these are an ideal solution to this common fault.
THE SOLUTION
Install our high quality stainless steel flange clamps which very simply attach in situ, curing vehicle faults and will last the life of the vehicle.
Our kit is the superior solution to this problem. Our high quality stainless steel flange kit splits around the exhaust pipes, allowing you to replace the flanges without having to remove the exhaust. Simply grind off the old flanges (often they will just fall apart) slot our new flanges in to place and fasten. Our clamps are designed to be very simple to fit with no grinding usually required, a straight fit unlike many others on the market. No welding required, our flanges are designed for the life of the vehicle and can be removed in future and reinstalled with no hassle. Our kit comes complete with all you require including both types of gasket seal ring and the correct spec stainless steel bolts, washers, lock rings and nuts.
UK stock
A straight fit, no need to grind our Flanges!
Next day delivery available
Improved design parts
BMW E46 M3 Exhaust Flange Muffler Back Box Repair Rusted Flanges Clamp Repair Fix Kit Installation Instructions - YouTube
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VEHICLES AFFECTED
Vehicles affected and part numbers
All models: Convertible, Coupe, CSL.
Associated part numbers:
07119904533 18111719417 11621741172 18101405737 18111723379 18107832313 18107831783
YOU WILL RECEIVE
4x Stainless steel flange kits enough to repair both pipe flanges
4x Stainless steel bolts, nuts, washers and locking washers
1x Gasket ring equivalent to 18111723379
1x Gasket ring equivalent to 18101405737