What is the primary function of valve locks (keepers)?

Valve locks, also known as keepers, are small components that secure the valve spring retainer to the valve stem. They work together with the valve spring to ensure the valve opens and closes properly and stays seated when it should.

How many valve locks are included in this set?

This set includes 8 pairs of valve locks, totaling 16 individual pieces. This quantity is typically sufficient for a 4-cylinder engine which commonly has 16 valves (8 intake and 8 exhaust).

Are these valve locks compatible with aftermarket valve springs?

These valve locks are designed to OEM specifications for Nissan and Infiniti engines. While they may work with some aftermarket valve springs, it is always best to consult the specifications of your valve springs to ensure compatibility.

Specifications

Brand: Manley Performance
Part #: 13012-8
UPC: 807298064741

Manley Nissan 6.0mm OEM Radius Sport Compact Valve Locks (8 pair)

Name: Manley Nissan 6.0mm OEM Radius Sport Compact Valve Locks (8 pair)
Brand: Manley Performance
SKU: manley-performance-manley-nissan-6-0mm-oem-radius-sport-compact-valve-locks-8-pa-t14-259276
Price: 58.91 USD
Availability: BackOrder

$58.91

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Fits 1991-2002 Infiniti G20. Manley Nissan 6.0mm OEM Radius Sport Compact Valve Locks (8 pair) are essential for keeping your valves seated correctly.

Key Features

Fits 1991-2002 Infiniti G20, 1995-1998 Nissan 200SX, 1989-1998 Nissan 240SX, 1991-1993 Nissan NX, and 1991-1994 Nissan Sentra.
Features a 6.0mm OEM radius design for a precise fit.
Constructed from a strong steel alloy for durability.
Includes 8 pairs, suitable for most 4-cylinder engines.
Designed as a direct replacement for factory valve locks.

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About this part

Product Details

These Manley 6.0mm OEM Radius valve locks are made from a strong, well-built steel alloy, designed to hold up under the stresses of engine operation. They are a critical component in your engine's valvetrain, working with the valve springs to ensure your valves open and close at the right times. If you're rebuilding the top end of your Nissan or Infiniti engine, these are the keepers you need to secure the valves properly.

This set includes 8 pairs, which is enough for a typical 4-cylinder engine with 16 valves. They are designed to be a direct replacement for your factory valve locks, meaning they fit right without modification. Using the correct size and type of valve lock is important for proper valve seating and preventing valve float, especially in performance applications.