RCM nitrided spring seat spacers for V5+ heads.
RCM nitrided spring seat spacers for V3/4 heads only to be used in conjunction with the RCM double valve spring kit RCM906.

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 ...

RCM500 2.1L Closed Deck Block Short Engine. RCM pride themselves on supplying the ultimate range of custom built EJ Series short engines. We have built an enviable reputation of assembling high powered Subaru power units to a meticulous lev ...

RCM450 2.1L Thick Wall Short Engine. RCM pride themselves on supplying the ultimate range of custom built EJ Series short engines. We have built an enviable reputation of assembling high powered Subaru power units to a meticulous level of d ...

One of the most prominent parts in any Subaru engine bay is the inlet manifold. All too often this large part is overlooked, which can detract from even the most detailed of vehicles. Offered on an exchange basis, the RCM refurbishing proce ...

RCM Camshaft Kits have been designed and developed in house, to ensure that they deliver the maximum power possible over a wide power band. Each Cam is precision ground and polished from a new blank to the same exacting standards and toler ...

RCM have always chosen Omega as their preferred piston manufacturer, not only because of their extensive experience within motorsport but also for the incredible accuracy and attention to detail that is applied to every aspect of their manu ...

Parallel fuel lines are a great addition to any engine, not only do they provide a more consistent volume of fuel to your injectors but they also yield key safety benefits. With Subaru's standard fuel system design, fuel is fed by a pump f ...
A Genuine engine gasket kit, for EJ205 engines between 2002 and 2005.
A Genuine engine gasket kit for EJ255 engines, from 05/2005+
Genuine Subaru engine gasket kit for Impreza's with engine codes EJ207/8

Power, Torque, Strength and reliability. These are all benefits brought to you with the RCM 2.1 stroker kit. When thinking of purchasing any engine components (in particular a complete stroker kit) it becomes vital that you make your choic ...

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 ...

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 ...

Oil control is a problem which can effect the Subaru's "Flat Four Boxer" engine design more than most due to its high crank case pressure and horizontal engine design. This is one of the reasons we have spent so much time at RCM developing ...

Oil control is a problem which can effect the Subaru's "Flat Four Boxer" engine design more than most due to its high crank case pressure and horizontal engine design. This is one of the reasons we have spent so much time at RCM developing ...

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 ...

This bolt-on, integrated performance upgrade simultaneously solves the two most significant bottlenecks in the EJ-series intake system: air restriction and fuel supply. This Dual Fuel Rail Tumbler Delete Kit, CNC machined from billet alumi ...

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 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 ...