RCM Black Series Subaru Thermostat Housing Kit Mishimoto we focused on all of

we focused on all of the areas where the factory unit disappoints

The new and updated dual-stage boost controller now features a billet aluminium housing and bullet valve technology for ultra-fast boost response with two adjustable boost levels

This state-of-the-art sealing technology ensures no leaks

It is capable of handling high levels of boost and is made of billet aerospace-grade aluminium with high-temperature seals

RCM Black Series Subaru Thermostat Housing Kit Mishimoto we focused on all ofIt's all in the detail! This is a CNC machined, black anodised and laser marked, RCM billet aluminium thermostat housing. Want your build to look just that little bit different and bespoke?.. this is a great addition to any engine build. Not only is the housing corrosion resistant, but it also helps with the smooth and efficient movement of coolant through the engines cooling system. The kit comprises of the billet thermostat housing and bolts and is