What is the purpose of a valve lash cap?

A valve lash cap sits on top of the valve stem, creating a hardened surface for the rocker arm or lifter to contact. This protects the valve stem itself from wear and helps maintain consistent valve lash.

What size valve stem do these caps fit?

These Manley Performance valve lash caps are specifically designed for valve stems that measure .310 inches, which is equivalent to 7.87mm in metric measurement.

How many valve lash caps are included in this set?

This set includes 8 valve lash caps, which is typically enough for a 4-cylinder engine or for specific applications on larger engines.

Specifications

Brand: Manley Performance
Part #: 42139-8
UPC: 807298066721

Manley Standard .310in Stem Valves (7.87mm) Wear Caps (8 pcs)

Name: Manley Standard .310in Stem Valves (7.87mm) Wear Caps (8 pcs)
Brand: Manley Performance
SKU: manley-performance-manley-standard-310in-stem-valves-7-87mm-wear-caps-8-pcs-t14-461274
Price: 33.08 USD
Availability: BackOrder

$33.08

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 standard valve lash caps for .310in (7.87mm) valve stems. These wear caps protect your valve train.

Key Features

Manley Performance standard valve lash caps.
Designed for valve stems measuring .310 inches (7.87mm).
Protects valve stems from wear caused by rocker arms or lifters.
Comes in a set of 8 pieces.

⚠️ 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 Performance offers these standard valve lash caps, designed for valve stems measuring .310 inches or 7.87mm. These small but important components sit atop your valve stems, providing a durable wear surface where the rocker arm or lifter makes contact. Keeping this contact point in good condition is key to maintaining proper valve train geometry and ensuring consistent engine performance over time.

Crafted by Manley Performance, a well-known name in engine building, these wear caps are made to the company's standards for reliability. They are intended to replace worn-out caps or to be installed during an engine rebuild. Ensuring you have the correct size is crucial; these are specifically for .310 inch (7.87mm) valve stems, so double-check your valve stem diameter before ordering.