What is the purpose of valve lock keepers?

Valve lock keepers, also known as valve collets, are small components that fit into a groove on the valve stem. They work with the valve spring retainer to hold the valve spring assembly securely in place on the cylinder head.

What does the '10 DEG' and '.3715' mean in the product name?

The '10 DEG' refers to the 10-degree angle of the keeper, which is designed to match the angle of the valve spring retainer. The '.3715' indicates the specific valve stem diameter this keeper is designed to fit, which is approximately 0.3715 inches.

Are these keepers suitable for all engine builds?

These keepers are designed for specific valve stem diameters and angles, common in many performance engine builds. It's important to verify that your valve stem size and retainer angle match these specifications before installation.

Specifications

Brand: Manley Performance
Part #: 13495-8
UPC: 807298008011

Manley Valve Lock/Keeper, LOC-10 DEG .3715 LocCap

Name: Manley Valve Lock/Keeper, LOC-10 DEG .3715 LocCap
Brand: Manley Performance
SKU: manley-performance-manley-valve-lock-keeper-loc-10-deg-3715-loccap-t14-880868
Price: 211.02 USD
Availability: BackOrder

$211.02

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 lock keepers. For engine rebuilds needing precise valve train control.

Key Features

This product includes Manley Performance valve lock keepers.
Designed for a .3715 inch valve stem diameter.
Features a 10-degree angle for secure valve spring seating.
Manley Performance is a well-known brand for engine components.

⚠️ 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

In this set, you get the Manley Performance valve lock keepers, specifically the LOC-10 DEG .3715 LocCap. These small but critical parts are what hold your valve springs in place, ensuring your valves open and close exactly when they should. They are essential for any engine rebuild or performance upgrade where the factory keepers might not be up to the task.

Manley is known for making well-built engine components, and these keepers are no exception. They are designed to work with a .3715 inch valve stem diameter and feature a 10-degree angle, which is a common specification for many performance applications. Using the correct keepers ensures your valve springs are properly seated and won't come loose under the stress of high RPMs or aggressive camshaft profiles. This attention to detail in manufacturing helps maintain the integrity of your engine's valve train.