Cobb LF Bypass Valve Rebuild Kit Subaru / Nissan / Mazda / Mitsubishi

Blow Off Valve Components

Get up to $0.36 in Build Bux by becoming a member

WTF are Build Bux?

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.



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.

LF Bypass Valve Rebuild Kit
  • Replacement O-Rings
  • New Hardware
  • Assembly Lube
  • Required Hex Keys Included


2009-2018 Nissan GT-R

2008-2015 Mitsubishi EVO X

2007-2013 Mazdaspeed 3

2002-2019 WRX

2004-2019 STI

2004-2018 Forester XT

2005-2012 Legacy GT 


Any returns for an exchange or refund will be allowed within 30 days from the receipt of your order and must be authorized prior to shipping with an RMA Number (Return Merchandise Authorization). To receive your return instructions and RMA# please use our online form under Returns and Exchanges! Once you receive your return instructions please ship out the item at your earliest convenience and provide the tracking number to your customer service rep. The customer will be responsible for all shipping fees. Before shipping your product back please make sure you package it up exactly how you received it and in all of its original packaging. All items must be in brand new and resalable condition. Once the item is received it will be inspected and a credit will be issued accordingly. All returns are subject to a 15% restocking fee. Any returns received without an RMA# will be charged a restocking fee and any shipping fees associated with the return. An item that does not ship directly from IIR's warehouse is considered a "special order" item and no returns will be authorized.

Cobb LF Bypass Valve Rebuild Kit Subaru / Nissan / Mazda / Mitsubishi
You have successfully subscribed!
This email has been registered