Engines and Components› Cylinder Heads and Components

Tomei

4G63 Intake and Exhaust Valve Set

$504.00

SKU: TA303A-MT01A

In Stock
In Stock
Ships by Sep 9
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$100 Minimum Order
30 Days Return
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Overview

The Tomei Racing Valve Set is designed for the Mitsubishi 4G63 engine, specifically for models EVO1-9. This set features intake valves with a 35.00mm (+1.0 inch) head diameter and exhaust valves with a 31.50mm (+1.0 inch) head diameter. The stem diameters are 6.57mm for intake and 6.54mm for exhaust.
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The Tomei Racing Valve Set is engineered for high-performance applications, specifically for the Mitsubishi 4G63 engine found in the EVO1-9 models. The intake valves feature a 35.00mm head diameter with a +1.0 inch increase, and the exhaust valves have a 31.50mm head diameter, also with a +1.0 inch increase. The stem diameters are precisely machined at 6.57mm for intake and 6.54mm for exhaust, with a length of 109.60mm for both. These dimensions are critical for optimizing cylinder head flow and performance. Installation by specially trained mechanics with specialized tools is recommended. Buyers should check local regulations regarding street legality before installation.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

BrandTomei
Part NumberTA303A-MT01A
CategoryEngines and Components

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Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

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