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Low-temperature thermostat, designed to allow coolant to begin circulating earlier in the warm-up cycle than a standard thermostat. Suited to vehicles used on road or track where engine temperatures rise quickly. No specific opening temperature is stated in the supplied information.

SKU: RCM1708

This Superstud head stud kit from RCM (14mm/14mm) uses a larger 9/16″ diameter stud made from aircraft-grade S99 steel for Subaru EJ-series engines. Supplied with 12x ARP 9/16″ 8740 chromoly nuts and washers and compatible with RCM head gaskets.

SKU: RCM2902

This Superstud head stud kit from RCM (14mm/12mm) is made from aircraft-grade S99 steel for Subaru EJ-series engines. Supplied with 12x ARP M12x1.25 8740 chromoly nuts and washers and compatible with RCM head gaskets.

SKU: RCM2903

3-port water pump manufactured by Aisin, using a cavitation-friendly cast impeller to maximise coolant flow. Kit includes the water pump complete with gasket and thermostat seal.

SKU: SEN96

Timing belt kit for Subaru EJ20/22/25 engines, built around RCM’s High Grip tensioner bracket. Fitted with HKS timing belt.

SKU: RCM2858

Timing belt kit for Subaru EJ20/22/25 engines, built around RCM’s High Grip tensioner bracket. Fitted with STI timing belt.

SKU: RCM2862

Timing belt kit for Subaru EJ20/22/25 engines, built around RCM’s High Grip tensioner bracket. Fitted with Genuine Subaru timing belt.

SKU: RCM2859

RCM V3/4 uprated valve springs, offering an increased spring rate over the standard genuine spring to help reduce valve bounce at high revs. Unfitted length 54mm, coil diameter 3.8mm, approx. 48g each; seat pressure 33kgf, lift pressure 72.8kgf. Uses the standard spring seat and retainer.

SKU: RCM435

RCM V5/6 uprated valve springs, offering an increased spring rate over the standard Subaru spring to help reduce valve bounce at high revs. Unfitted length 43.5mm, coil diameter 3.8mm, approx. 40g each. Fits Subaru Impreza (GC/GF), V5/6.

SKU: RCM417

RCM titanium valve spring retainers, supplied as a set of 16. For use with RCM double valve springs and later-style buckets with integrated shims. Please confirm compatibility with your engine before ordering.

SKU: RCM912