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COMP Cams 603-12 Hardened Steel Set Of 12 - 7 Degree, 3/8", Single Groove Street Locks

(Jeep Wrangler 1987-88, Cherokee 1974-83, CJ7 1976-86, CJ5 1972-83, Grand Wagoneer 1984-86, J10 1974-87, Wagoneer 1972-83, J20 1974-76 + 21 more models)

Part of: COMP Cams Hardened Steel Single Groove Street Locks

Other options in this family: COMP Cams 601-16 COMP Cams 603-16 COMP Cams 601-12 COMP Cams 600-16

Manufacturer

Picture for manufacturer COMP Cams

Part Number

603-12
5 reviews
Sale Price

$39.95

In Stock (10+)

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Usually delivered within 2 days

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No Hassle Returns

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Live-in-stock inventory

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Fitment guaranteed

Fitment guaranteed

Product Details

The COMP Cams 603-12 hardened steel valve locks are precision-engineered components designed to secure valve spring retainers in high-performance and street engine applications. This set includes 12 individual locks, providing enough pieces for a 6-cylinder engine or spare locks for 4-cylinder and V8 builds.

Key Specifications:

  • 7-degree taper angle for secure retainer engagement
  • 3/8" stem diameter compatibility
  • Single groove design for use with compatible retainers
  • Hardened steel construction for durability and wear resistance
  • Street/performance application rated

Features & Benefits:

  • Hardened steel material resists deformation under high spring pressures and elevated temperatures
  • Precision manufacturing ensures consistent fit and reliable valve train operation
  • Single groove configuration works with standard street and performance valve spring retainers
  • 7-degree taper provides optimal locking force while allowing for easy installation and removal

These valve locks are essential components in any valve train assembly, preventing the retainer from separating from the valve stem during engine operation. The hardened steel construction makes them suitable for street performance engines with upgraded valve springs and higher RPM operation compared to stock components.

Products specifications

Fits

Jeep Wrangler 1987-88, Cherokee 1974-83, CJ7 1976-86, CJ5 1972-83, Grand Wagoneer 1984-86, J10 1974-87, Wagoneer 1972-83, J20 1974-76, Scrambler 1981-85, CJ6 1972-75, Jeepster 1972-73, DJ5 1972-74, J-2500 1972-73, J-2600 1972-73 + 15 more models

Lock Series

Street Locks

AMAZON ASIN

B000N5RI16

Material

Steel

Prop 65

WARNING: Cancer and Reproductive Harm P65Warnings.ca.gov

C.A.R.B. Exempt for Foreign Vehicles Manufactured Before 1967?

Yes, but must meet tailpipe emission standards for year of vehicle.

C.A.R.B. Exempt for On-Road Vehicles?

Yes

C.A.R.B. Exempt for Racing and Off-Road Only Vehicles?

Yes, but must be a race/competition only vehicle.

C.A.R.B. Exemption Reason

No impact on pollution output of vehicle.

C.A.R.B. Exempt for California Certified Vehicles Manufactured Before 1965?

Yes, but must meet tailpipe emission standards for year of vehicle.

C.A.R.B. Exempt for Federally Certified Vehicles Manufactured Before 1967?

Yes, but must meet tailpipe emission standards for year of vehicle.

Lock Angle

7

Number of Grooves

Single

Valve Stem Diameter

3/8

Autoplicity was quick and easy to order from. I found just what I was looking for in absolutely no time at all, plus it was shipped extremely quickly. I would definitely order from this site/company again.<br><br>Thanks!

Great prices, availability

Fast shipping, product was excellent .

I ordered a hitch off of this site for Christmas, I have never heard of it nor did I know how they were, but they are great! Got my package in I'd say 4 days, very fast and it was exactly what I wanted! Only down fall was they charged me 3 times and I was short 150$ for a few days. I got my money back and I would definitely order again.

Smooth transaction, very pleased

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