What material are these valve locks made from?

These Manley valve locks are made from titanium. Titanium is chosen for its strength and light weight, which is beneficial for high-performance engine components.

What does the sizing '.3415 +.050' mean?

The '.3415' refers to the nominal diameter of the valve lock. The '+.050' indicates that these locks are designed for valve stems that are 0.050 inches larger than the standard size for the intended application.

Are these suitable for stock engines?

These valve locks are part of Manley's performance line and are specifically designed for performance engine builds where reducing valve train mass and ensuring secure retention at high RPMs are critical. They may not be necessary or compatible with all stock engine configurations.

Specifications

Brand: Manley Performance
Part #: 13084T-16
UPC: 807298064086

Manley Valve Lock/Keeper, LOC-TI S7 .3415 +.050

Name: Manley Valve Lock/Keeper, LOC-TI S7 .3415 +.050
Brand: Manley Performance
SKU: manley-performance-manley-valve-lock-keeper-loc-ti-s7-3415-050-t14-880400
Price: 192.51 USD
Availability: InStock

$192.51

Only 2 left in stock

Manley Performance titanium valve locks. Part# 13084T-16. For performance engine builds.

Key Features

This product includes 16 Manley LOC-TI S7 valve locks.
Constructed from titanium for a strong and lightweight design.
Sized at .3415 inches with a +.050 inch offset for specific valve stem applications.
Designed to reduce valve train mass for improved performance.
Helps ensure secure valve stem retention during engine operation.

⚠️ 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

This set includes 16 Manley LOC-TI S7 valve locks, designed for performance engine builds. These keepers are made from titanium, a strong and lightweight material that helps reduce valve train mass. The S7 designation indicates a specific design for certain valve stem diameters and applications, and these are sized at .3415 inches with a +.050 inch offset, meaning they are intended for valve stems that are 0.050 inches larger than standard for a particular application.

Using titanium for valve locks helps lower the overall weight of the valve train. This can lead to improved valve control at higher engine speeds and can reduce wear on other components. The precise sizing and offset are critical for ensuring the valve stem is securely held in place, preventing any unwanted movement or separation during operation. These are well-built components for builders who need reliable parts for demanding engine work.