BMW N54 N55 S55 Secondary Pump Activation Harness 318i (F31) Increased turbo volume for a

Increased turbo volume for a more aggressive sound

The ARM A3 Downpipe is constructed of a single piece design

holds double the capacity of the factory pan

4" (111mm) Tall

Plug wires are sold in packs of 6

BMW N54 N55 S55 Secondary Pump Activation Harness 318i (F31) Increased turbo volume for aThe Precision Raceworks BMW Secondary Pump Activation Harness is the preferred method to control auxiliary fuel pumps by pump manufacturers and tuners alike. This kit is considered the most complete and highest quality kit on the market and is sold private label to many BMW pump manufacturers. That is why this harness is the #1 method of secondary pump control on the market around the globe. Product Features 10 Gauge Oxygen Free Copper Wire 100% Plug