COBB LF Bypass Valve Rebuild Kit V2 | LFBPV_REBUILD-KITV2

EMISSIONS

This part is not an emissions-related part and therefore can be used on Emission Controlled Vehicles.


DESCRIPTION

This LF BPV Rebuild Kit is a package of hardware and o-rings required to completely rebuild the current COBB LF Bypass Valve. New o-rings, assembly lube, hardware and tools give you everything necessary to address concerns with a COBB LF BPV that may not seal as well as it used to.

In August of 2020, the LF Bypass Valve for the 2015-2020 WRX and 2014-2018 Forester XT was updated with a new internal spring. The Rebuild Kit will include both springs, please choose the option that is appropriate for your application.

Original Spring (uncoated)
Free length: 3.5"
Rate: 7.4 lbf/in
Bench cracking vacuum installed in LF BPV: -5.7 psi

New Spring (yellow)
Free length: 2.25"
Rate: 40.5 lbf/in
Bench cracking vacuum installed in LF BPV: -6.7 psi


WHY?

Over time the o-rings within the COBB LF Bypass Valve may potentially deform or fail. This rebuild kit provides all parts needed to completely rebuild any of the current LF Bypass Valves.


FEATURES
LF Bypass Valve Rebuild Kit V2