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You’re unstoppable
The original exhaust will need to be cut
this vented carbon bonnet weighs 40% less than the original
once the engine is up to operating temperature and under load
SMG Expansion Tank Relocation Kit For Aftermarket Carbon Airboxes - BMW E46 M3 A8 (4E) You’re unstoppableBMW E46 M3 CSL expansion tank relocation kit, including mounting bracket. The CSL SMG expansion tank reservoir is required when installing a carbon air box on SMG equipped E46 M3 vehicles, as the stock variant is incorporated into the airbox. Relocation of the reservoir is required when fitting an aftermarket CSL style airbox. The mounting hardware is included to relocate the SMG expansion tank so that the CSL intake can fit in the engine bay, with
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