What material are these valves made from?

These Manley Race Master intake valves are constructed from high-quality stainless steel. They also feature chrome stems and hard tips for added durability and wear resistance.

What is the purpose of the swirl polished under head areas?

The swirl polished under head areas, along with the fully machined combustion faces, are designed to optimize airflow into the cylinder. This can help improve combustion efficiency and overall engine performance.

Are these valves suitable for alcohol-fueled engines?

While these are intake valves, Manley recommends their exhaust valves from this series for alcohol engines due to their reliable performance in demanding conditions. These intake valves are designed for racing applications under 8000 RPM.

Specifications

Brand: Manley Performance
Part #: 11654-4
UPC: 807298047157

Manley VW 1200-1600 Triple Groove 43.7mm Race Master Intake Valves (Set of 4)

Name: Manley VW 1200-1600 Triple Groove 43.7mm Race Master Intake Valves (Set of 4)
Brand: Manley Performance
SKU: manley-performance-manley-vw-1200-1600-triple-groove-43-7mm-race-master-intake-v-t14-4308878
Price: 109.49 USD
Availability: BackOrder

$109.49

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Manley VW 1200-1600 Triple Groove 43.7mm Race Master Intake Valves (Set of 4). Stainless steel construction for durability.

Key Features

Fits VW 1200-1600 engines.
Set of 4 intake valves.
43.7mm head diameter with triple grooves.
Constructed from stainless steel for durability.
Chrome stems and hard tips enhance wear resistance.
Swirl polished under head areas and fully machined combustion faces optimize airflow.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

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About this part

Product Details

If you're rebuilding the top end of a VW 1200-1600 engine, especially for racing applications under 8000 RPM, these Manley Race Master intake valves are a solid option. They're built from stainless steel, which holds up well in high-heat environments. The chrome stems and hard tips add extra wear resistance, meaning they should last a good long time even with frequent use.

Manley also swirl polishes the under-head areas and fully machines the combustion faces. This helps improve airflow into the cylinder, which can make a noticeable difference in how efficiently your engine runs. These are the straight stem 'Race Master' style, designed to fit specific racing engine builds.

This set includes four intake valves. Remember to check your specific engine's requirements to ensure these are the correct size and style for your build.