What is the purpose of valve lock keepers?

Valve lock keepers, also known as valve locks or collets, are small components that fit into a groove on the valve stem. They work with the valve spring retainer to keep the valve spring compressed and the entire valve train assembly securely in place.

What does 'LOC-10 DEG' mean for these keepers?

The 'LOC-10 DEG' indicates that these keepers have a 10-degree angle on the groove that interfaces with the valve spring retainer. This specific angle is common in many aftermarket performance valve train setups and ensures a strong, positive lock.

Are these keepers compatible with stock retainers?

While these keepers feature a common 10-degree angle often found in aftermarket parts, compatibility with stock retainers can vary. It's best to consult your engine's specifications or the retainer manufacturer's data to ensure a proper match.

Specifications

Brand: Manley Performance
Part #: 13561-8
UPC: 807298091839

Manley Valve Lock/Keeper, LOC-10 DEG .3415 LocCap

Name: Manley Valve Lock/Keeper, LOC-10 DEG .3415 LocCap
Brand: Manley Performance
SKU: manley-performance-manley-valve-lock-keeper-loc-10-deg-3415-loccap-t14-880870
Price: 211.02 USD
Availability: BackOrder

$211.02

On Backorder

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Manley Performance valve lock keepers. Solid steel construction for reliable valve train operation.

Key Features

Manley valve lock keepers, part number 13561-8.
Solid steel construction for strength and durability.
Features a 10-degree keeper groove angle, compatible with many aftermarket retainers.
Designed to securely hold valve springs and retainers in place.
Essential component for engine rebuilding and valve train assembly.

⚠️ 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

If you're rebuilding the top end of your engine, getting the valve train components right is crucial for performance and longevity. These valve lock keepers from Manley Performance are designed to securely hold your valve springs and retainers in place, ensuring your valves operate as intended under all conditions.

Manley builds these keepers from solid steel, giving them the strength needed to withstand the constant forces within the valve train. The 'LOC-10 DEG' in the name refers to the 10-degree angle of the keeper groove, which is a common specification that works with many popular aftermarket retainers. This precise angle helps create a strong lockup, preventing accidental dislodging even with aggressive camshaft profiles or high engine speeds. They fit right into place, making them a straightforward component for engine builders.

When you're putting an engine back together, using well-made parts like these Manley valve lock keepers can make a significant difference in the reliability of your build. They are a key piece in ensuring your valves open and close at the right time, every time.