What is the primary function of a push rod?

Push rods are essential components in many internal combustion engines. They transfer the lifting motion from the camshaft's lifters to the rocker arms, which in turn open the engine's valves.

Why is the length and diameter of a push rod important?

The length and diameter are critical for proper valve train geometry. Using the correct length ensures the lifter and rocker arm make proper contact, while the diameter and wall thickness contribute to the push rod's rigidity under load.

What does the black oxide finish do?

The black oxide finish provides a layer of protection against corrosion and wear. It also helps to reduce friction where the push rod contacts the lifter and rocker arm, contributing to smoother operation.

Specifications

Brand: Manley Performance
Part #: 25232-16
UPC: 807298076232

Manley Push Rod - 5/16 Dia. - 7.650 Length - 0.120 Wall - 4130 Chrome Moly - Swedged End - Set of 16

Name: Manley Push Rod - 5/16 Dia. - 7.650 Length - 0.120 Wall - 4130 Chrome Moly - Swedged End - Set of 16
Brand: Manley Performance
SKU: manley-performance-manley-push-rod-5-16-dia-7-650-length-0-120-wall-4130-chrome--t14-879689
Price: 334.17 USD
Availability: BackOrder

$334.17

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Manley Performance push rods, 7.650" length, 0.120" wall, 4130 Chrome Moly. Set of 16. Pushrods are essential for valve train operation.

Key Features

Fits various engine applications requiring specific dimensions.
Constructed from strong 4130 chrome moly steel for durability.
Features a 0.120-inch wall thickness for rigidity.
Meticulously formed ends with exact radii ensure proper contact.
Excellent concentricity and closely controlled length for consistent valve train operation.
Heat treated and black oxide finished for improved durability and corrosion resistance.

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About this part

Product Details

Manley Performance push rods are a key component for your engine's valve train. This set is designed for applications needing a 7.650-inch length, a 5/16-inch diameter, and a 0.120-inch wall thickness, constructed from durable 4130 chrome moly steel. These push rods are critical for transferring the motion from your camshaft to your rocker arms, ensuring your valves open and close at the right time.

What sets these Manley push rods apart is the attention to detail in their construction. The ends are meticulously formed with exact radii, which helps ensure proper contact with the lifters and rocker arms. You'll also find excellent concentricity and closely controlled lengths across the set, meaning each push rod is nearly identical. This precision is important for consistent valve train geometry and performance. They are heat treated and finished with a black oxide coating for added durability and corrosion resistance.

When rebuilding or upgrading your engine's top end, using well-made push rods like these from Manley can make a notable difference in the reliability and performance of your valve train. Ensure you have the correct length for your specific application, as incorrect lengths can lead to improper valve lash and potential engine damage.