Engine Builds

GrimmSpeed 04-21 Subaru STI Bypass Valve - Red Air Freight Prohibited: false Not Carb Approved: false Ltl Freight Required: false Prop 65: Unknown Epa: N/A

Subaru WRX/STI/Legacy GT Donut Gasket by GrimmSpeed Replace your worn or leaking OEM donut gasket with this fiber-reinforced graphite donut gasket at a fraction of the cost. Replaces Subaru part...

Fluidampr offers the highest quality harmonic dampers on the market. Torsional vibration can be very destructive to your motor. From the factory most manufacturers use rubber to balance the dampers...

IN STOCK, NO WAITING! while everyone else is out :) ? ARP head studs for your Subaru WRX and STI ARP uses a premium grade ARP2000 alloy that is rated...

The Gates Replacement Timing Belt Component Kits for the WRX and STI is complete set of components needed for replacing the timing belt, water pump and pulleys. Gates has assembled...

GrimmSpeed OEM Style Gasket, OEM quality without the high OEM price. At GrimmSpeed we have worked with endless amounts of aftermarket gaskets, none seem to work as well as the...

Description Comes with a genuine single Subaru OEM TGV to Engine gasket. This gasket goes in between the stock tumblers and the engine. Package includes one gasket but 2 are...

This tool allows you to remove the AVCS intake cam sprockets without damaging the cam or the sprocket. The sprocket specific interface will not round out internal pulley splines like...

The Subaru OEM Full Master Gasket kits come complete with every gasket or seal that you could possibly need when doing any level of engine work including, head gaskets, valve...

GrimmSpeed 15-21 Subaru WRX Bypass Valve - Red Air Freight Prohibited: false Not Carb Approved: false Ltl Freight Required: false Prop 65: Unknown Epa: N/A

Ferrea Honda F20C 36mm 5.48mm 109.8mm 22 Deg S-Flo Stock 6000 Series Intake Valve - Set of 8 Air Freight Prohibited: false Not Carb Approved: false Ltl Freight Required: false...

There are many important reasons to use ARP main stud kits for your 2.3L MS3, including the elimination of main cap walk and fretting, as well as protecting the threads...