What is the purpose of a push rod in an engine?

A push rod connects the lifter (which rides on the camshaft lobe) to the rocker arm. As the camshaft lobe pushes the lifter up, the push rod transfers that motion to the rocker arm, which then opens the engine's valve.

Why is push rod length important?

Correct push rod length is crucial for proper rocker arm geometry. If the push rod is too long or too short, it can lead to incorrect valve lift, reduced performance, and premature wear on valvetrain components like the rocker arms and valve tips.

What does the black oxide finish do?

The black oxide finish on these push rods helps to improve corrosion resistance, protecting the metal from rust and environmental damage. It also provides a smooth surface that can aid in lubrication and reduce friction within the valvetrain.

Specifications

Brand: Manley Performance
Part #: 25195-8
UPC: 807298059884

Manley Push Rod - 7/16 Dia. - 11.800 Length - 0.165 Wall - 4130 Chrome Moly - Swedged End - Set of 8

Name: Manley Push Rod - 7/16 Dia. - 11.800 Length - 0.165 Wall - 4130 Chrome Moly - Swedged End - Set of 8
Brand: Manley Performance
SKU: manley-performance-manley-push-rod-7-16-dia-11-800-length-0-165-wall-4130-chrome-t14-879664
Price: 215.58 USD
Availability: BackOrder

$215.58

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Manley Performance push rods, 7/16" diameter, 11.800" length, 0.165" wall. 4130 Chrome Moly, swedged end. Set of 8.

Key Features

Verified fitment for Manley Performance push rods.
Constructed from 4130 chrome moly tubing with a 0.165 inch wall thickness.
Features swedged ends with exact radii for precise fitment and smooth operation.
Maintains excellent concentricity and closely controlled lengths across the set.
Heat treated and finished with a black oxide coating for added durability and corrosion resistance.
Set includes eight push rods.

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About this part

Product Details

Starting with a 0.165 inch wall thickness and constructed from 4130 chrome moly tubing, these Manley push rods are built for serious engine work. The swedged ends are meticulously formed with exact radii, ensuring a precise fit and smooth operation within your engine's valvetrain. This attention to detail helps maintain excellent concentricity and closely controlled lengths across the set of eight, which is critical for consistent valve lift and timing.

The heat treatment and black oxide finish add durability and corrosion resistance, making these push rods a solid option for rebuilds or performance upgrades. They are designed to handle the stresses of increased spring pressures and higher RPMs, providing reliable performance where it counts. Proper push rod length is essential for correct rocker arm geometry, and Manley's tight length control helps simplify the setup process.