What is the purpose of a valve spring seat?

A valve spring seat, or spring cup, sits at the bottom of the valve spring. It provides a stable and flat surface for the spring to rest on, ensuring it can apply consistent pressure to the valve train.

What does the 1.311 inch measurement refer to?

The 1.311 inch measurement is the inner diameter of the spring cup. This spec is important for ensuring the valve spring fits correctly and is properly supported.

Are these seats sold individually or as a set?

This part number, 42349-16, is for a set of 16 valve spring seats, which is typically enough for a V8 engine.

Specifications

Brand: Manley Performance
Part #: 42349-16
UPC: 807298042060

Manley Valve Spring Seat, SPRING CUP-ID 1.311

Name: Manley Valve Spring Seat, SPRING CUP-ID 1.311
Brand: Manley Performance
SKU: manley-performance-manley-valve-spring-seat-spring-cup-id-1-311-t14-881636
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. Part# 42349-16. Direct fit.

Key Features

Fits Manley Performance valve spring applications.
Spring cup inner diameter measures 1.311 inches.
Well-built to support valve springs reliably.
Helps ensure consistent valve spring pressure.
Part number 42349-16.

⚠️ 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

Manley Performance valve spring seats are a key component for any engine rebuild or performance build where you're replacing valve springs. These seats, also known as spring cups, sit at the base of the valve spring and provide a solid, flat surface for the spring to rest against. This ensures the spring is properly supported and can exert consistent pressure on the valve train.

This particular set from Manley Performance is designed with a spring cup inner diameter of 1.311 inches, a common size for many performance applications. They are well-built to handle the stresses of repeated valve operation, helping to maintain proper valve timing and prevent issues like valve float. Using a quality spring seat is a small detail that makes a big difference in the reliability and performance of your engine's top end.