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

A push rod transfers the motion from the camshaft's lifter to the rocker arm. This action, in turn, opens the engine's intake and exhaust valves at the correct time.

Why is the wall thickness important for a push rod?

A thicker wall, like the 0.165 inch on these push rods, helps prevent flexing or bending under the stress of engine operation. This ensures consistent valve train geometry and performance.

What does 'swedged end' mean for these push rods?

A swedged end is a manufacturing process where the tube is reduced in diameter and thickened at the end, creating a stronger connection point for the lifter and rocker arm.

Specifications

Brand: Manley Performance
Part #: 25138-8
UPC: 807298029313

Manley Push Rod - 7/16 Dia. - 8.100 Length - 0.165 Wall - 4130 Chrome Moly - Swedged End - Set of 8

Name: Manley Push Rod - 7/16 Dia. - 8.100 Length - 0.165 Wall - 4130 Chrome Moly - Swedged End - Set of 8
Brand: Manley Performance
SKU: manley-performance-manley-push-rod-7-16-dia-8-100-length-0-165-wall-4130-chrome--t14-879782
Price: 215.58 USD
Availability: BackOrder

$215.58

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Manley Performance push rods. 7/16" diameter, 8.100" length, 0.165" wall, made from 4130 Chrome Moly. Set of 8.

Key Features

Set includes 8 push rods.
Constructed from durable 4130 Chrome Moly tubing.
Features a 0.165 inch wall thickness for strength.
Measures 7/16 inch in diameter and 8.100 inches in length.
Ends are meticulously formed with exact radii for excellent concentricity.
Heat treated and black oxide finished for durability and corrosion resistance.

Secure CheckoutFast Shipping631-982-0042

About this part

Product Details

Starting with 4130 Chrome Moly tubing, these Manley push rods are built for serious engine work. The 0.165 inch wall thickness offers a solid foundation, while the 7/16 inch diameter and 8.100 inch length are common dimensions for many performance builds. Manley pays close attention to the details that matter for consistent valve train operation.

You'll notice the ends are meticulously formed with exact radii, which helps ensure excellent concentricity. This means the push rod stays centered in the lifter and rocker arm, reducing wear and improving the accuracy of your valve events. They're also heat treated and finished with a black oxide coating for added durability and corrosion resistance. This set includes eight push rods, enough for a standard V8 engine.