Tomei Valve Guide Set - Mitsubishi 4G63 Seats & Rails With our Exoracing block breather

With our Exoracing block breather fittings

Brass with nickel-plated coating

Our superior

bringing the 'diamond cut with black clear finish'

Tuner Stage 3's require a simple valve spring and retainer upgrade due to the additional lift

Tomei Valve Guide Set - Mitsubishi 4G63 Seats & Rails With our Exoracing block breatherWe chose to use Phosphor Bronze (Cn Sn P alloy) to make our Valve Guides, for its highly tensile and superior heat transferring ability, which is vital, Intake, high power and high RPM outputting engines. Since race engines these days require more power at higher RPM use , these engines now experience more extreme heat conditions. These conditions will increase the deterioration rate on these valve train related components. The Phosphor Bronze