Description
Engine builders working with GM 6.6L Duramax Diesel can use this Race Series intake valve family to choose the required valve dimensions while staying within the correct Manley application group. The parent listing is distinguished by 1.338"; Head, which should be cross-checked against the rest of the engine combination.
If the GM 6.6L Duramax Diesel cylinder head has been ported, fitted with oversized seats, or changed from its original valvetrain layout, confirm the required valve measurements after machining rather than using a stock-size assumption.
Key Product Details
- Application: GM 6.6L Duramax Diesel
- Manley Series: Race Series
- Valve Position: Intake
- Title Specification: 1.338"; Head
- Product Family Detail: Race Series application focus
- Manufacturer Part Number: 11608-8
Package Quantity
Set of 8 valves. The selected configuration is supplied as a 8-piece valve package. This quantity applies to the selected Manley SKU family shown on this product page.
Selection & Fitment Notes
Confirm head diameter, overall length, stem diameter, keeper/groove style, seat compatibility, and installed-height requirements with your cylinder-head specification before ordering.
Professional engine assembly and measurement are recommended. Product specifications should be confirmed against the selected Manley part number and the requirements of the exact engine build.