What is the purpose of a valve spring seat?

A valve spring seat provides a stable and correctly sized base for the valve spring to sit on. It ensures the spring is properly aligned and maintains consistent installed height and pressure, which is critical for engine performance.

How many spring seats are included in this package?

This package contains sixteen valve spring seats. This quantity is typically sufficient for a standard V8 engine, which has 16 intake and 16 exhaust valves.

What does the 1.255" ID specification mean?

The 1.255" ID refers to the inner diameter of the spring seat. This measurement is important for matching the seat to the specific valve spring you are using to ensure a proper fit and consistent spring load.

Specifications

Brand: Manley Performance
Part #: 42143-16
UPC: 807298082073

Manley Valve Spring Seat, SPRING CUP-ID 1.255

Name: Manley Valve Spring Seat, SPRING CUP-ID 1.255
Brand: Manley Performance
SKU: manley-performance-manley-valve-spring-seat-spring-cup-id-1-255-t14-881568
Price: 112.96 USD
Availability: BackOrder

$112.96

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 valve spring seats. Get 16 seats with a 1.255" ID for your engine build.

Key Features

This product includes 16 valve spring seats.
Each seat has an inner diameter of 1.255 inches.
Manufactured by Manley Performance.
Designed for use with valve springs in engine builds.

⚠️ 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

This package includes sixteen Manley Performance valve spring seats, each with an inner diameter of 1.255 inches. These are essential components when rebuilding or upgrading your engine's valvetrain, providing a solid base for your valve springs to rest on. Ensuring the correct spring seat is crucial for proper valve spring alignment and consistent pressure, which directly impacts engine performance and reliability.

Manley Performance is known for making well-built engine components, and these spring seats are no exception. They are designed to handle the pressures and heat found in performance engine applications. Using the right size spring seat, like this 1.255-inch ID version, helps maintain the intended spring installed height and load, preventing issues like spring float or excessive wear on other valvetrain components. This attention to detail in the valvetrain is key for a smooth-running and durable engine.