Turbo Inlet

EJTI:  Made from Heat Treated Cast Aluminum

Oil Fill Tube

OFTB-1:   The Killer B Fill Relocation Tube moves the Fill Cap to a location that is accessible, and does not rub, Intercooler Tubing.

Pan, Pickup, Baffle

PPBC: 

Dual Barb Coolant/Breather

DBFA:  So, in typical Killer B fashion, we have designed a no fail, no leak part. We've put our own performance spin on it as well, opening up the breather port, as the factory plastic piece is too restrictive.

 EJ Series Air/Oil Separator

GD-MV3C:  o function as its Air/Oil Separator description implies: the removal of oil, in liquid or vapor form, from the vented crankcase gasses.

FA20 AOS

FA-MV3S-C: Killer B Motorsport Air/Oil Separator should meet and exceeds your expectations of how an Air/Oil Separator should work and function on a Subaru engine

Duel Air/ Oil Separator BRZ 

22BRAOS-D: The Killer B Motorsport Dual Catch Can AOS system is designed to remove excess oil vapor from crankcase gasses before they reach your intake.

WRX Performance Dual Catch Can AOS 

Keeps your intake and valves cleaner and maintains proper octane levels. We do this using a vortex system that is efficient without limiting flowrates, unlike baffled units.

KBM HH 4-1 Install Guide

The Killer B Motorsport Holy Header was developed using state of the art CAD software & simulations to determine optimal design to increase power as much as possible throughout the rev range.

Killer B Motorsport Dual Washer/Coolant Reservoir 


This part works on all U.S. STI models, 2004-2020


KBM HH-2Bolt Install Guide

This guide is intended to help you install your Holy Header 2-Bolt Header.