Active Autowerke BMW E46 M3 Exhaust SECTION 1 with 100 CELL hi flow catalysts (11-110) _(piggy_Back_Style)_Water_Pump_And_Alternator_Pulleys_(3) HY3-HDG4 kit features ACT's most

HY3-HDG4 kit features ACT's most popular Heavy Duty pressure plate

2 Brushed Silver Trim Position Decals with ranges from -5 to +6 and 0 to +11

you can easily swap over to this muffler delete for the weekend wheeling trips and then reinstall your OE muffler for your weekly commute andndash

hot or cold

Active Autowerke BMW E46 M3 Exhaust SECTION 1 with 100 CELL hi flow catalysts (11-110) _(piggy_Back_Style)_Water_Pump_And_Alternator_Pulleys_(3) HY3-HDG4 kit features ACT's mostThe Active Autowerke Exhaust Section 1 for the BMW E46 M3 is designed specifically to address the raspy exhaust note and unburnt fuel smell commonly experienced when upgrading to performance headers on this model. While the factory BMW Section 1 uses a straight through design with built in resonators, this aftermarket section 1 integrates a pair of 100 cell high flow metallic catalysts to filter exhaust gases without sacrificing performance.