
The latest addition to our range of head gaskets are the EJ22 98mm bore, produced with the correct water jacket cut outs to suit 2006+ cylinder heads. Engineered to perform under the most extreme of conditions our cylinder head gaskets are ...

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 ...

Engineered to perform under the most extreme of conditions our cylinder head gaskets are rated for use up to and over 800BHP. Unlike most conventional cylinder head gaskets, our gaskets use what is most commonly known as a “folded stopper l ...

Engineered to perform under the most extreme of conditions our cylinder head gaskets are rated for use up to and over 800BHP. Unlike most conventional cylinder head gaskets, our gaskets use what is most commonly known as a “folded stopper l ...

Engineered to perform under the most extreme of conditions our cylinder head gaskets are rated for use up to and over 800BHP. Unlike most conventional cylinder head gaskets, our gaskets use what is most commonly known as a “folded stopper l ...

CM EJ257 Short Engine Bottom End Rebuild Kit. This kit comprises of the following: 10103AD020 - Genuine Subaru EJ257 RA Short Block (x1) RCM2804 - RCM Low Expansion (4032) Omega pistons Standard 99.50mm Bore size (x1 set) RCM1635 - RCM 11mm ...

RCM Stainless Steel Block Adaptor which screws into the bottom of the engine block connecting to the oil cooler modine water hose. Being made from Stainless steel, it completely eliminates the problem of corrosion, this is a direct replacem ...

This is an RCM block case alloy blanking plug which is used on the EJ series block cases. These are used as gudgeon pin blanking plugs, but can also be used when the oil cooler modine is being deleted. The OE part is prone to rust and corro ...

This is an RCM block case alloy blanking plug which is used on the EJ series block cases. This is a direct replacement for the Genuine Subaru part. The OE part is prone to rust and corrosion, and isn't available to buy a replacement. The th ...

Engine oil teperatures are key to maintaining a healthy engine as well as performance. Under hard driving conditions oil temperatures naturally raise as a greater heat is generated from the faster moving engine components. With oil temperat ...

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 ...

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 ...
RCM Engineering - 14mm Stud Conversion
Precision block face skimming for Subaru EJ cases.Price is per block face skim. Ensures a perfectly flat mating surface for optimal head gasket seal—critical for reliability and performance. Carried out with meticulous attention to detail, ...
RCM Engineering - Conversion of x1 Cylinder head to be compatible with 14mm head stud. Price is for the conversion of x1 cylinder head.

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 ...
RCM Engineering - Rear Thrust Conversion
RCM Engineering - Rebore & Plateau Hone 4 cylinder Block Assembly.

RCM Engineering- Sealed Block Wet Media Clean


The RCM1540 Extreme 11mm Head Stud kit is an absolute must for your performance build. Manufactured from Aircraft Grade S99 Steel, and with a tensile strength in excess of 237,000 Psi (1640MPa), our 11mm kit reduces head movement under boos ...
This fitting kit would be used when fitting the RCM manifold kit RCM3029 to a 2015+ WRX (US only) RCM exhaust fitting kits provide all the necessary items needed to compliment and complete your RCM exhaust part. Each kit comprises of genui ...

With many competition car builds, it's common to move the fuel cell from under the rear seat to into the boot space. If this is done, regulations will insist you fit a flame proof fire wall to separate the fuel cell from the driver & co ...