BC Brian Crower Valve Guides for EJ20/EJ25 WRX STi (BC3960/BC3961) Select::Set of 8 Exhaust Valve Guides Spacer & Nut

Spacer & Nut

For 5" air filter inlet

With the bypass capability over 5 GPM at 5 PSI

This kit is typically in stock

Energy Suspension 1G DSM AWD rear control arm bushing kit

BC Brian Crower Valve Guides for EJ20/EJ25 WRX STi (BC3960/BC3961) Select::Set of 8 Exhaust Valve Guides Spacer & NutValve guides are essential components that wear over time, particularly in high revving EJ20 and EJ25 engines. To maintain proper tolerances and optimal performance, it's advisable to replace worn guides with new aftermarket ones. BC premium valve guides, made from Manganese Silicon Aluminum Bronze alloy, are CNC machined to precise tolerances. These guides resist cracking and corrosion, reduce friction, and ensure high lubrication even at elevated