Active Autowerke BMW B58N M340i M440i GESI Catted Downpipe (2025 and newer) 335i year-2005-make-bmw-model-z3-3-0i

year-2005-make-bmw-model-z3-3-0i

Manufactured from 100% brushed 304 stainless steel

Upgraded High Flow Fuel Pump

Direct bolt-on replacement for factory downpipes

15+ Horspower gains throughout RPM range

Active Autowerke BMW B58N M340i M440i GESI Catted Downpipe (2025 and newer) 335i year-2005-make-bmw-model-z3-3-0iNO PERFORMANCE TUNE NEEDED. Active Autowerke BMW B58N Gen 3 Catted Downpipe this is for M340 and M440 B58N Gen 3 which also incorporates a new GPF into the downpipe. NOTE that to remove the stock GPF downpipe requires 9 to 10 hours of labor as the subframe needs to be dropped. NOTE: Fitment applies to US model cars only unless specifically stated. We cannot guarantee fitment to non US model cars. BMW introduced a new valvetronic, single turbo version