What material are these push rods made from?

These push rods are made from 4130 chrome moly steel. This material is chosen for its strength and durability, making it well-suited for the demands of internal engine components.

What does 'excellent concentricity' mean for these push rods?

Excellent concentricity means the push rods are very precisely centered along their length. This helps ensure consistent contact with the lifters and rocker arms, contributing to accurate valve train geometry and operation.

What is the purpose of the black oxide finish?

The black oxide finish on these push rods serves two main purposes. It helps to improve wear resistance during operation and also provides a layer of protection against corrosion.

Specifications

Brand: Manley Performance
Part #: 25806-16
UPC: 807298034102

Manley Push Rod - 5/16 Dia. - 9.500 Length - 0.080 Wall - 4130 Chrome Moly - Swedged End - Set of 16

Name: Manley Push Rod - 5/16 Dia. - 9.500 Length - 0.080 Wall - 4130 Chrome Moly - Swedged End - Set of 16
Brand: Manley Performance
SKU: manley-performance-manley-push-rod-5-16-dia-9-500-length-0-080-wall-4130-chrome--t14-879762
Price: 261.22 USD
Availability: BackOrder

$261.22

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Manley Performance push rods, 5/16" dia. x 9.500" length, 0.080" wall. Set of 16. Black oxide finish.

Key Features

Fits most V8 engines requiring 16 push rods.
Constructed from durable 4130 chrome moly steel.
Features meticulously formed ends with exact radii.
Maintains excellent concentricity for precise valve train operation.
Closely controlled length ensures consistent geometry.
Heat treated and black oxide finished for improved wear resistance and corrosion protection.

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About this part

Product Details

Manley Performance is well-known for making strong internal engine components, and these push rods are a great example of that. If you're rebuilding the top end of your engine, getting the valve train geometry just right is crucial for reliable performance. These push rods are made from 4130 chrome moly steel, which is a solid choice for strength and durability under the stresses of engine operation.

What sets these apart is the attention to detail in their construction. The ends are meticulously formed with exact radii, and they maintain excellent concentricity, meaning they are perfectly centered. This precise control over length and form helps ensure consistent valve train operation. They're also heat-treated and finished with a black oxide coating, which helps with wear resistance and corrosion protection.

This set includes 16 push rods, which is what most V8 engines require. The swedged end design is a common feature that helps with push rod cup retention.