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 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.

Each kit includes a boost referenced pressure switch often referred to as a "hobbs switch" however our pressure switch is designed for exposure to oil as well as air and is safe for engine bay temperatures for years of reliable service unlike a "hobbs switch" which is deigned for use in swimming pool and hot tub applications.

Features:

• 10 Gauge Oxygen Free Copper Wire
• 100% Plug & Play (zero cutting, stripping, crimping when used with included pressure switch)
• Pre-set 13psi boost reference switch designed for automotive use
• Optional Negative Trigger or Positive Trigger harnesses included
• Test Plug included

What's Included:

• Precision Raceworks BMW Secondary Pump Activation Harness

Fitment Guide:

• Bmw 135i 2007 to 2013
• Bmw 135is 2013
• Bmw 1m 2011
• Bmw 335i 2006 to 2015
• Bmw 335i Gt Xdrive 2014 to 2016
• Bmw 335i Xdrive 2009 to 2015
• Bmw 335is 2011 to 2013
• Bmw 335xi 2007 to 2008
• Bmw 435i 2014 to 2016
• Bmw 435i Gran Coupe 2015 to 2016
• Bmw 435i Xdrive 2014 to 2016
• Bmw 535i 2008 to 2017
• Bmw 535i Gt 2011 to 2017
• Bmw 535i Gt Xdrive 2011 to 2017
• Bmw 535i Xdrive 2009 to 2016
• Bmw 640i 2012 to 2018
• Bmw 640i Gran Coupe 2013 to 2017
• Bmw 640i Xdrive 2014 to 2017
• Bmw 640i Xdrive Gran Coupe 2014 to 2017
• Bmw 740i 2011 to 2015
• Bmw 740li 2011 to 2015
• Bmw 740li Xdrive 2013 to 2015
• Bmw Activehybrid 3 2013 to 2015
• Bmw M135i 2013 to 2016
• Bmw M2 2016 to 2018
• Bmw M2 Competition 2019 to 2020
• Bmw M235i 2014 to 2016
• Bmw M235i Xdrive 2015 to 2016
• Bmw M3 2015 to 2018
• Bmw M4 2015 to 2020
• Bmw X1 2013 to 2015
• Bmw X3 2011 to 2017
• Bmw X4 2015 to 2016
• Bmw X4 2017 to 2018
• Bmw X5 2011 to 2018
• Bmw X6 2008 to 2017
• Bmw Z4 2009 to 2014