AIRTEC Motorsport Downpipe Sports Cat for BMW G Series – M2, M3 & M4 BMW 320I OEM Part Number: G1FY-4B425-AA

OEM Part Number: G1FY-4B425-AA

This SMD unit fully replaces both the bulb and lens

The kit fits neatly in place of the original items to improve the look of the engine bay and comes with all fixtures

Audi RS3 (2015-)

AIRTEC Motorsport Downpipe Sports Cat for BMW G Series – M2, M3 & M4 BMW 320I OEM Part Number: G1FY-4B425-AABy replacing the restrictive primary catalytic converters located in the original downpipes with specially designed high flow sports cats, back pressure is reduced, which effectively improves the engines breathing by allowing it to expel gases more quickly. This in return means faster throttle response, increased power output and a more aggressive exhaust note. Complete with replacement fitting kit, the downpipes will mate to a standard or aftermarket