Tomei Valve Guides for 4G63 Evo/ DSM (TA309A-MT01A) CALIFORNIA Ideal for auto-x and weekend

Ideal for auto-x and weekend driving events

• Factory o2 sensor location

As of June 2026

Notes About Pump Configuration:• There will be enough components included with this option to use 1 or 2 fuel pumps

• Immediate real-time data and history up to 31 days

Tomei Valve Guides for 4G63 Evo/ DSM (TA309A-MT01A) CALIFORNIA Ideal for auto-x and weekendTomei valve guides for the Evo and DSM are designed to handle the high horsepower and RPMs of the 4G63 engine. We use Phosphor Bronze (Cn Sn P alloy) for its high tensile strength and superior heat transfer, essential for high power, high RPM engines. Modern race engines demand more power and higher RPMs, leading to extreme heat conditions that accelerate valve train component wear. Phosphor Bronze offers low friction and optimal clearances, reducing