What is the purpose of a valve spring seat?

A valve spring seat sits between the valve spring and the cylinder head. Its main job is to provide a stable, flat surface for the spring to rest on, ensuring consistent pressure and proper valve train alignment.

What does the 1.550 inch measurement refer to?

The 1.550 inch measurement is the outer diameter of the spring cup on the seat. This dimension is important for ensuring the valve spring fits correctly onto the seat.

Are these seats sold individually or as a set?

The part number 42377-16 is for a set of 16 valve spring seats, which is typically enough for a V8 engine.

Specifications

Brand: Manley Performance
Part #: 42377-16
UPC: 807298044088

Manley Valve Spring Seat, SPRING CUP-OD 1.550

Name: Manley Valve Spring Seat, SPRING CUP-OD 1.550
Brand: Manley Performance
SKU: manley-performance-manley-valve-spring-seat-spring-cup-od-1-550-t14-881647
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# 42377-16. Direct fit.

Key Features

Manley Performance valve spring seats.
Part number 42377-16.
Spring cup outer diameter is 1.550 inches.
Designed to provide a solid base for valve springs.
Helps ensure consistent spring pressure.
Well-built for engine operation stresses.

⚠️ 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 Performance valve spring seats, part number 42377-16. They are designed to sit between the valve spring and the cylinder head, providing a solid base for the spring to seat against. This helps ensure consistent spring pressure and proper valve train geometry.

Each seat has a spring cup outer diameter of 1.550 inches, a common size for many performance and stock applications. They are well-built to handle the stresses of engine operation. Proper installation of these seats is crucial for the reliable function of your valve springs.