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Quantity
1
***NEW DESIGN***
The Precision Raceworks BMW Secondary Pump Activation Harness (Previously -Boost Referenced Pump Activation Harness) is the preferred method to control auxiliary fuel pumps by pump manufacturers and tuners alike.
This kit ...
Reviews
5.0
14 ratings
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Precision Raceworks QOS is something else Steven and his team are awesome.
T
TRENTON · June 13, 2025
Works great modified setup for a b5 s4
P
Patrick · March 6, 2025
BMW Secondary Pump Activation Harness
Everything came in a timely manner easy to install