What is the purpose of a valve lock keeper?

Valve lock keepers, also known as valve collets, are small components that secure the valve spring retainer to the valve stem. They work together to keep the valve train components properly aligned and functioning during engine operation.

What does the '.3415' in the product name refer to?

The '.3415' indicates the specific diameter of the valve stem that these keepers are designed to fit. It's important to match this measurement to your valve stems for proper installation and function.

What does 'captive' mean in the context of these keepers?

A captive design means the keeper has a feature that helps retain it on the valve stem even when not fully seated. This adds an extra layer of security, reducing the chance of the keeper coming loose during installation or operation.

Specifications

Brand: Manley Performance
Part #: 13031-16
UPC: 807298063560

Manley Valve Lock/Keeper, LOC-CAPTIVE .3415

Name: Manley Valve Lock/Keeper, LOC-CAPTIVE .3415
Brand: Manley Performance
SKU: manley-performance-manley-valve-lock-keeper-loc-captive-3415-t14-880208
Price: 175.17 USD
Availability: BackOrder

$175.17

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. These captive keepers are designed for .3415 inch valve stems.

Key Features

Fits valve stems measuring .3415 inches in diameter.
Features a captive design to help prevent accidental dislodging.
Manufactured by Manley Performance for reliable engine components.
Designed for use with Manley valve locks.
Prop 65 warning applies to this product.

⚠️ 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's LOC-CAPTIVE valve lock keepers are built with a specific design for .3415 inch valve stems. This particular design helps ensure the keeper stays securely in place during engine operation, which is crucial for maintaining proper valve train function. They are made from a well-built material that can handle the stresses of the engine environment.

When you're rebuilding an engine, especially a performance build where valve float can be a concern, having reliable valve keepers is essential. These keepers are designed to work with Manley's valve locks, providing a solid connection point that helps prevent accidental dislodging. The captive design is a notable feature that adds an extra layer of security, reducing the risk of a keeper coming loose and causing serious engine damage.