What material are these push rods made from?

These push rods are constructed from 4130 Chrome Moly steel, a strong and durable alloy commonly used in performance engine components. They are also heat treated for added strength and wear resistance.

What is the purpose of the swedged ends and black oxide finish?

The swedged ends are precisely formed to ensure a proper fit and smooth contact with your lifters and rocker arms. The black oxide finish helps to protect against corrosion and can also reduce friction within the valvetrain.

Are these push rods suitable for a stock engine rebuild?

While these push rods are well-built and feature precise dimensions, they are often chosen for performance applications where tighter tolerances and increased durability are desired. Always confirm that the 7/16 inch diameter and 11.000 inch length match your specific engine's requirements.

Specifications

Brand: Manley Performance
Part #: 25128-8
UPC: 807298029696

Manley Push Rod - 7/16 Dia. - 11.000 Length - 0.165 Wall - 4130 Chrome Moly - Swedged End - Set of 8

Name: Manley Push Rod - 7/16 Dia. - 11.000 Length - 0.165 Wall - 4130 Chrome Moly - Swedged End - Set of 8
Brand: Manley Performance
SKU: manley-performance-manley-push-rod-7-16-dia-11-000-length-0-165-wall-4130-chrome-t14-879647
Price: 215.58 USD
Availability: BackOrder

$215.58

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Manley Performance push rod set. 7/16" dia, 11" length, 0.165" wall, made from 4130 Chrome Moly. Set of 8.

Key Features

Fits: Engine Components > Push Rods
Constructed from durable 4130 Chrome Moly steel with a 0.165 inch wall thickness.
Features swedged ends with exact radii for a precise fit and smooth operation.
Maintains excellent concentricity with closely controlled length for consistent performance.
Heat treated for increased strength and wear resistance.
Black oxide finish provides corrosion resistance and helps reduce friction.

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About this part

Product Details

Starting with a 0.165 inch wall thickness and constructed from 4130 Chrome Moly steel, these Manley push rods are built for durability in performance engine builds. The swedged ends are meticulously formed with exact radii, ensuring a precise fit and smooth operation within your valvetrain. This attention to detail helps maintain excellent concentricity, meaning each push rod is very close to its specified length, which is crucial for consistent valve timing and lift.

The heat treatment process hardens the material, increasing its resistance to bending and wear under the stress of engine operation. A black oxide finish is then applied, which offers some corrosion resistance and helps to reduce friction. This set includes eight push rods, enough for a typical V8 engine, and they are designed to fit right into your existing valvetrain setup, assuming your engine specifications match the 7/16 inch diameter and 11.000 inch length.