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1320 Performance Replacement Gaskets/Hardware BMW N54/N55/S55
5 COLLECTOR FLANGE HEADER JDM ITR 2
*Black anodize coating
each Billet Oil Cap is precision CNC machined and features a durable finish
* True 4-1 merge collector provide smooth exhaust flow and higher HP gain after Tig welded we Ported it for better flow
2.5 inch tensioner pulley JRSC supercharger B and D m10x1.5 1320 Performance Replacement Gaskets/Hardware BMW1320 performance 2. 5" pulley used on the lower B Series JRSC Alternator bracket and will work on both of the D series pulley found on the Jackson Racing supercharger kit. our 2. 5 stainless steel tensioner pulley with dual Genuine OEM quality NSK Japan high speed bearings we raised the edge of the pulley to prevent the belt from "walking" off the tensioner. This listing is for the pulley only nothing else. complete B series lower alternator bracket