
EJ22 Closed Deck Block. There are no longer any new closed deck blocks available to buy. We source low mileage blocks from a number of sources, and prepare them ourselves ready for your build. Each block is thoroughly inspected, before unde ...

Our Billet Oil Seperator Cover is the perfect addition to any engine build to guard against future oil leaks. Throughout the years Subaru produced oil separator covers using a variety of materials such as: cast aluminium, plastic and press ...

Exedy have done a fantastic job on their Subaru multi plate clutches kits ticking every single box in the process….we can’t recommend them enough! There are suitable for any high powered applications including both street and competition wo ...

Subaru EJ20 Billet Block Guards – Pair A pair of precision-machined Subaru EJ20 block guards, designed to provide additional support around the cylinder bores of the EJ20 open-deck engine block. The EJ20's open-deck design leaves the upper ...

RCM Timing Belt Idler Post Restoration Precision Engineering for Maximum Timing Belt Reliability After more than 36 years of building Subaru EJ engines, we've seen first-hand how age and repeated engine rebuilds can take their toll on the t ...
FERODO DOT 5.1 Brake Fluid 500ml FERODO DOT 5.1 Brake Fluid is a premium high-performance glycol-ether based brake and clutch fluid designed to deliver consistent braking performance under demanding driving conditions. Engineered for modern ...

Precision cylinder head face skimming for Subaru EJ engines.Price is per cylinder head skim. Restores a perfectly flat sealing surface to ensure reliable head gasket performance. An essential process carried out with meticulous attention to ...

The Process West range billet manifolds is a no holds barred manifestation of what is possible under the hood of a WRX/STI when perfect aesthetics meet high end performance. What you see here is the result of years of research and testing, ...

The Process West range billet manifolds is a no holds barred manifestation of what is possible under the hood of a WRX/STI when perfect aesthetics meet high end performance. What you see here is the result of years of research and testing, ...

Fresh air ALS (Anti Lag System) Valve sensor as used on all the Gobstopper projects. This is listing is for the valve sensor which mounts to the top of the valve.

A must-have tool for efficient brake servicing, the RCM Brake Caliper Piston Spreader is designed to quickly and safely retract caliper pistons when replacing brake pads. Engineered for both professional workshops and performance enthusiast ...
Designed to simplify the installation of rear-side stretch belts on compatible Subaru models. Unlike conventional tools, this belt guide ensures secure engagement with the multi-rib crank pulley and incorporates a durable steel belt stopper ...

RCM Replacement Diaphragm – Performance Fuel Pressure Regulators Maintain peak performance. Preserve total control. Ensure your RCM Performance Fuel Pressure Regulator continues to deliver the precision and reliability your Subaru tuning se ...

RCM Subaru EJ# Line bore & Main Bearing Pinning Process At RCM Engineering, precision, reliability, and performance are engineered into every stage of our Subaru EJ-series engine preparation. Developed from our Gobstopper program, our c ...
Subaru EJ# Line bore Engineering Process At RCM Engineering, precision is at the heart of everything we do. Our Subaru EJ-series line bore process has been developed and refined over decades of building and maintaining championship-winning ...

RCM Dry Sump Pump to Pan O-Ring Seal For RCM Subaru EJ Series Dry Sump System This O-ring provides a precise, leak-free seal between the RCM dry sump pump and oil pan. Made from high-temp, oil-resistant material, it ensures reliable perform ...

RCM Dry Sump Pan to Block O-Ring Seal For Subaru EJ Series (RCM Dry Sump Systems) This high-quality O-ring provides a secure, leak-free seal between the RCM dry sump oil pan and the engine block on Subaru EJ engines. Made from oil- and heat ...

Replacement Oil Pump Pulley Nut – RCM Subaru EJ Series Dry Sump Kits This is a direct replacement oil pump pulley nut for use with RCM's Subaru EJ Series Dry Sump Kits. The nut is compatible with box options 28mm Wide Pulley – Suited for ...

Replacement Oil Pump Pulley – RCM Subaru EJ Series Dry Sump Kits This is a direct replacement oil pump pulley for use with RCM's Subaru EJ Series Dry Sump Kits. Two pulley options are available: 28mm Wide Pulley – Suited for pre-2025 dry ...
RCM Engineering - Conversion of x1 Cylinder head to be compatible with 14mm head stud. Price is for the conversion of x1 cylinder head.

At the heart of a Gobstopper engine is the incredible 2.0 litre EJ20 Closed deck block.

These are great news if you need to seal up your engine for what ever reason. Be it during the build process or you need to transport your engine and want to stop debris or foreign objects entering the ports. Made from 5mm anodised aluminiu ...

Quality. Innovation. Performance. The hallmarks of Arrow Precision. Only the highest quality raw materials, the latest methods and the knowledge of superbly skilled designers and engineers goes into the making of every Arrow Precision part. ...

RCM Engineering- Sealed Block Wet Media Clean