Best Engine Valve Locks of 2025

Robert Reyes Avatar
Robert Reyes
Last Updated: Jan 9, 2025

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Engine valve locks are small but critical components that help keep an engine running smoothly. These locks are designed to keep the valve spring securely in place and prevent it from releasing the valve. Made from durable materials, such as stainless steel, engine valve locks are essential for high-performance engines and racing applications. They come in a variety of sizes and styles to fit different types of engines and can be easily installed by a professional mechanic. Whether you're looking to improve the performance of your engine or simply need to replace worn-out components, engine valve locks are a must-have for any serious car enthusiast.

At a Glance: Our Top Picks

Michigan Motorsports Valve Lock Keepers for LS LT Cover #TOP 1
Michigan Motorsports Valve Lock Keepers for LS LT
ftb score rating icon 9.9
COMP Cams Hardened Steel Valve Locks Cover #TOP 2
COMP Cams Hardened Steel Valve Locks
ftb score rating icon 9.8
COMP Cams Hardened Steel Valve Locks Set of 16 Cover #TOP 3
COMP Cams Hardened Steel Valve Locks Set of 16
ftb score rating icon 9.6

Top 10 Engine Valve Locks

#TOP 1

Michigan Motorsports Valve Lock Keepers for LS LT

Michigan Motorsports Valve Lock Keepers for LS LT Cover
Michigan Motorsports Valve Lock Keepers for LS LT LS1 LS2 LS3 LQ4 LQ9 L83 L86 4.8 5.3 5.7 6.0 6.2 7.0, 7 degree 8mm Valve Locks for stock springs along with BTR TSP PAC MM Dual Spring Retainers

Michigan Motorsports Valve Lock Keepers are designed for LS and LT series engines. They are compatible with various dual valve spring retainers, including OEM, BTR, TSP, and PAC. With a quantity of 32, there are enough locks for both heads. The 7-degree 8mm standard height valve locks are suitable for LS style retainers. These valve locks offer convenience and reliability for your engine's valve system.

What We Like
Compatible with LS & LT series engines
Quantity of 32 locks
7-degree 8mm standard height
#TOP 2

COMP Cams Hardened Steel Valve Locks

601-16
11/32"
COMP Cams Hardened Steel Valve Locks Cover
COMP Cams 601-16 Hardened Steel Set of 16 - 7 Degree, 11/32", Single Groove Street Locks

These engine valve locks are made of stamped and hardened steel, providing superior wear resistance for your engine. The set includes 16 locks with a 7-degree angle and a single groove street lock design. The item package has a height of 15.5 cm, a length of 1.4 cm, and a width of 8.8 cm. These valve locks are an essential component for keeping your engine running smoothly and efficiently.

What We Like
Durable and wear-resistant construction
Includes 16 locks with a 7-degree angle and a single groove street lock design
Compact item package dimensions for easy storage and transport
#TOP 3

COMP Cams Hardened Steel Valve Locks Set of 16

603-16
3/8 Inch
COMP Cams Hardened Steel Valve Locks Set of 16 Cover
COMP Cams 603-16 Hardened Steel Set of 16 - 7 Degree, 3/8", Single Groove Street Locks

This product is a set of 16 hardened steel valve locks with a 7 degree, 3/8" single groove street locks. The package dimensions are 0.508 H x 13.462 L x 10.16 W (centimeters), the package weight is 0.15 pounds, and it is made in the United States. The fit type is vehicle specific, and it falls under the category of engine valve locks. These valve locks are useful for securing the valves in your vehicle's engine, ensuring that the valves do not move out of place and cause damage or performance issues.

What We Like
Durable hardened steel material
Easy to install and use
Made in the United States

COMP Cams 648-16 Machined Steel Set

648-16
Black
Single Groove
COMP Cams 648-16 Machined Steel Set Cover
COMP Cams 648-16 Machined Steel Set of 16-7 Degree, 11/32", Single Groove Race Locks , Black

The COMP Cams Machined Steel Set is a high-quality product designed for engine valve locks. Made of machined steel, these locks feature a single groove and a 7-degree lock angle. With an 11/32 inch valve stem diameter, they are easy to install. The single groove design ensures a secure fit, preventing the valve from coming loose during operation. The 7-degree lock angle provides optimal valve control and stability, enhancing overall engine performance. These locks are perfect for race enthusiasts or anyone looking to upgrade their engine's valve system. With the COMP Cams Machined Steel Set, you can enjoy improved engine performance and peace of mind knowing your valves are securely locked in place.

What We Like
High-quality machined steel
Secure and easy installation
Optimal valve control and stability
#TOP 5

Comp Cams Valve Stem Lock

611-1
Black
Comp Cams Valve Stem Lock Cover
Comp Cams 6111 11/32" Valve Stem Lock

Introducing the Comp Cams 6111 11/32" Valve Stem Lock, a high-quality auto part that will enhance your engine performance. Made in the United States, this valve stem lock is designed to provide a secure fit and prevent valve stem movement during engine operation. With its compact dimensions of 0.5 cm L x 3.2 cm W x 9.1 cm H, this valve stem lock is easy to install and fits perfectly into your engine. Whether you're a professional mechanic or a DIY enthusiast, this valve stem lock is a must-have for your engine maintenance. Trust the reliability and durability of Comp Cams, a trusted brand in the automotive industry. Upgrade your engine with the Comp Cams 6111 11/32" Valve Stem Lock and experience improved performance and peace of mind.

What We Like
Secure fit
Prevents valve stem movement
Compact dimensions
#TOP 6

LS LT Valve Lock Keepers Set of 32 Compatible with all 1997-Current LS/LT Series V8 Engines

99447842
Silver
LS LT Valve Lock Keepers Set of 32 Compatible with all 1997-Current LS/LT Series V8 Engines Cover
LS LT Valve Lock Keepers 8MM 7 Degree Single Groove Set of 32 Compatible with all 1997-Current LS/LT Series V8 Engines LS1 LS3 LS2 LT1 LS6 LQ9 4.8L 5.3L 5.7L 6.0L 6.2L Vortec Camaro Corvette

This set of 32 single groove valve locks is compatible with all Chevrolet LS and LT series engines from 1997 to current models, including LS1, LS3, LS2, LT1, LS6, LQ9, 4.8L, 5.3L, 5.7L, 6.0L, 6.2L Vortec Camaro Corvette. The product is designed to fit OEM, Brian Tooley, Texas Speed Steel or Titanium Retainers (BTR PAC Dual Springs). The manufacturer is certified with AS9100D and ISO 9001:2015, ensuring the highest quality and durability of the product.

What We Like
Compatible with all LS/LT series engines from 1997 to current models
Fits OEM, Brian Tooley, Texas Speed Steel or Titanium Retainers (BTR PAC Dual Springs)
Produced by a certified manufacturer with high quality standards
#TOP 7

F FIERCE CYCLE Valve Keeper Locks for CG125

a20052900ux0101
Titanium Tone
12 x 10 x 0.5 cm
F FIERCE CYCLE Valve Keeper Locks for CG125 Cover
F FIERCE CYCLE 10pcs 8mm Valve Stem Diameter Hardened Valve Keeper Locks Steel Race Locks for CG125

F FIERCE Valve Locks are a set of 10 hardened steel locks designed for 8mm valve stems. Precision machined, these mid-lock, 1 groove keepers are durable and lack lash cap recesses. Stamped steel and heat treated, they outlast factory retainers, offering longevity and reliability for your engine valves.

What We Like
Hardened Steel
Precision Machined
Durable and Long-lasting
#TOP 8

Skunk2 Racing Valve Keeper/Lock for Honda

312-05-0150
Skunk2 Racing Valve Keeper/Lock for Honda Cover
Skunk2 Racing 312-05-0150 Black Valve Keeper/Lock for Honda

The Skunk2 Racing Valve Keeper/Lock for Honda is a set of 32 pieces that can work with both factory and aftermarket 5.5mm valves. The 7-degree tapper is designed to work with most OEM and aftermarket retainers. This product is vehicle-specific and falls under the category of Engine Valve Locks.

What We Like
Compatible with both factory and aftermarket valves
Designed to work with most OEM and aftermarket retainers
Vehicle-specific fit
#TOP 9

F FIERCE CYCLE Valve Keeper Locks

a20052900ux0107
Titanium Tone
12 x 10 x 0.5 cm
F FIERCE CYCLE Valve Keeper Locks Cover
F FIERCE CYCLE 20pcs 8mm Valve Stem Diameter Hardened Valve Keeper Locks Steel Race Locks for GY6-125

The F FIERCE CYCLE Valve Locks are designed for an 8mm diameter, ensuring a precise fit for your engine. Made from durable steel, these locks are machined to exact specifications, offering reliability and longevity. Their mid-lock, one-groove design enhances stability, preventing unwanted movement during operation. Unlike factory retainers, these stamped and heat-treated locks provide superior durability, making them a great choice for those seeking to improve engine performance and reduce maintenance frequency.

What We Like
Durable steel construction
Precise fit for engines
Enhanced stability design
Long-lasting performance
#TOP 10

APDTY Engine Valve Spring Locks Set

170911x8
APDTY Engine Valve Spring Locks Set Cover
APDTY 170911x8 Engine Valve Spring Locks; Set Of 8; Replaces 4777050AC

The APDTY Valve Spring Locks are a brand new set of eight locks designed for your engine's valve springs. These locks are versatile and can be used for both intake and exhaust valves, with two needed per valve. They are compatible with a range of models, including Avenger, Grand Caravan, and Wrangler, ensuring a proper fit for your specific vehicle. To make installation even easier, you can reference the compatibility chart to confirm the right match for your car's year, make, and model. This product replaces the original part number 4777050AC, providing a reliable solution for your engine repair needs.

What We Like
New set of 8
Fits multiple vehicle models
Easy installation
Replaces original part
Buying Guide Image

Frequently Asked Questions (FAQs)

1. What does valve lock do in an engine?

Valve locks, also known as keepers, play a crucial role in an engine's valvetrain. They ensure that the valves remain securely in place and prevent them from contacting the pistons inside the cylinders. The performance of valve locks is dependent on the amount of valve spring pressure they are exposed to.

2. Can valve locks be reused?

Valve locks or keepers are typically not considered to be reusable components. They are essential for the proper functioning and longevity of the valvetrain. It is recommended to replace valve locks when necessary to ensure optimal performance and reliability.

3. How can I tell if my engine valves are bad?

There are several signs that indicate potential issues with engine valves: performing a cold engine test, noticing idling problems, experiencing high levels of oil consumption or smoke, observing compromised acceleration power, and conducting an engine braking test. If you encounter any of these symptoms, it is advisable to have your engine valves checked by a professional.

4. Can valve seals be replaced without removing the head?

Yes, it is possible to replace valve seals without removing the cylinder head. One method involves placing the piston at bottom dead center (BDC), inserting a rope into the cylinder to prevent the valve from falling out, and then rotating the engine backwards to push the piston up. This technique allows for valve seal replacement without removing the cylinder head.

5. What are the types of valve retainers?

There are three common types of valve retainers: 10° titanium retainers with a 1.625" spring diameter, 7° lightweight tool steel retainers with a 1.055" spring diameter, and 10° steel retainers with a 1.095" spring diameter. These different types of valve retainers are used depending on the specific requirements and characteristics of the engine.

Editor's Notes

During our engine valve lock research, we found 24 engine valve lock products and shortlisted 10 quality products. We collected and analyzed 3,572 customer reviews through our big data system to write the engine valve locks list. We found that most customers choose engine valve locks with an average price of $14.21.

The engine valve locks are available for purchase. We have researched hundreds of brands and picked the top brands of engine valve locks, including Michigan Motorsports, Comp Cams, Z Whip, F FIERCE CYCLE, Skunk2 Racing. The seller of top 1 product has received honest feedback from 359 consumers with an average rating of 4.7.

Written by
Robert Reyes Avatar

Robert Reyes is a dedicated writer from San Francisco with a bachelor of degree in mechanics and a bachelor of degree in marketing. He focuses on making some complicated topics simple and enjoys explaining complex and technical things in an easy-to-understand way.