Manley Extreme Duty Exhaust Valves GM 6.6L Duramax 1.300in Head Set of 8
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This item may be on backorder. Please contact us to confirm supplier availability and estimated lead time before ordering.
Regular price
$685.43
Verified Fitment & Application Support
This product is selected for proper fitment and compatibility with the listed engine application. Our team is available to assist with fitment questions, installation considerations, and supporting components to ensure a smooth install and reliable performance.
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Compliance & Restrictions
California Proposition 65 (Prop 65)
WARNING: This product can expose you to chemicals which is known to the State of California to cause cancer and/or reproductive harm.
For more information, visit www.P65Warnings.ca.gov.
CARB / California Emissions Compliance
This item may be restricted in California and other regions with emissions regulations. If applicable, it is intended for
competition/off-road use only unless otherwise stated. It is the customer’s responsibility to confirm local compliance before purchase.
Orders shipping to restricted areas may be canceled.
Manley Extreme Duty exhaust valves for the GM 6.6L Duramax diesel, with a 1.300 in. head diameter, 4.985 in. overall length and a .2735 in. stem. The Extreme Duty series is Manley's answer for applications where heat and cylinder pressure are the limiting factors.
Key Features
- XH-432 XtremeAlloy exhaust valve material
- Chrome stems and hard tips for wear resistance
- Swirl polished under head area and fully machined combustion face
- Built for applications where extreme force and heat resistance are required
Fitment
- GM 6.6L Duramax diesel
Product Details
- Position: Exhaust
- Head Diameter: 1.300 in.
- Overall Length: 4.985 in.
- Stem Diameter: .2735 in.
- Series: Manley Extreme Duty
- Material: XH-432 XtremeAlloy stainless steel
- Quantity: Set of 8
- Manufacturer Part Number: 11609-8
The 6.6L Duramax uses four valves per cylinder, so a complete engine takes 16 exhaust valves. Order two sets of eight to do a full engine.
Shipping Height: 2.5
Shipping Length: 11.75
Shipping Width: 6.75