B Series 4-1 Narrow Header B16 B18 B20 RMF RF304 stainless steel A C and P S compatible Suitable for all B Series engines, B16, B18, & B20 Suitable for 1. 6l 2. 0l engine displacement 2. 5" collector outlet 4 1 merge collector Includes gaskets and hardware 1 Year Warranty De pending on the engine setup, slim fans maybe required. Not factory length, you will need an extension pipe (https: jackspaniaracing. shop products 3 way slip fit adjustable telescoping test pipe 2 25? keyword=test%20pipe) 2
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