What is the purpose of a pushrod in an engine?

Pushrods are part of the valvetrain system. They transfer the lifting motion from the lifters, which are actuated by the camshaft, up to the rocker arms. The rocker arms then open the engine's intake and exhaust valves.

Why is precise length and concentricity important for pushrods?

Precise length ensures the correct valve lash, which is the small gap between the rocker arm and valve stem when the valve is closed. Consistent concentricity means the pushrod walls are uniform, contributing to its strength and stability under load. Both factors are crucial for reliable valvetrain operation.

What does the black oxide finish do?

The black oxide finish is a conversion coating that helps protect the steel pushrods from rust and corrosion. It also provides a surface that can hold oil, which is beneficial for lubrication within the valvetrain.

Specifications

Brand: Manley Performance
Part #: 25823-8
UPC: 807298034478

Manley 8.225in Length 3/8in Pushrod Tube Dia 5/16in Tip Diameter Chrome Moly Pushrods (Set Of 8)

Name: Manley 8.225in Length 3/8in Pushrod Tube Dia 5/16in Tip Diameter Chrome Moly Pushrods (Set Of 8)
Brand: Manley Performance
SKU: manley-performance-manley-8-225in-length-3-8in-pushrod-tube-dia-5-16in-tip-diame-t14-317278
Price: 132.26 USD
Availability: BackOrder

$132.26

On Backorder

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Manley Chrome Moly Pushrods. Set of 8, 8.225in length. Pushrod

Key Features

Set of 8 chrome moly pushrods.
Each pushrod is 8.225 inches long.
Features a 3/8 inch tube diameter and 5/16 inch tip diameter.
Meticulously formed ends with exact radii for proper seating.
Excellent concentricity and closely controlled length for precision.
Heat treated and black oxide finished for durability.

⚠️ 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

These are Manley Chrome Moly pushrods, part number 25823-8. They are sold as a set of eight and measure 8.225 inches long, with a 3/8 inch tube diameter and 5/16 inch tip diameter. Pushrods are a critical part of your engine's valvetrain, transferring the motion from the lifters to the rocker arms. Ensuring they are well-made and precisely sized is important for proper valve operation.

Manley has paid close attention to the details with these pushrods. The ends are meticulously formed with exact radii, which helps them seat properly against the lifters and rocker arms. They also feature excellent concentricity, meaning the walls are uniform, and their length is closely controlled. This precision is important for maintaining consistent valve lash and ensuring the valvetrain functions as intended. The pushrods are heat treated and finished with a black oxide coating for added durability.