Availability
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COMP Cams rocker arm adjusting nuts are designed for the ultimate in strength and locking force. They are precision-ground for minimum runout and are tapered for extra strength in the locking area. The special alloys in the polylocks ensure a quality and strength not found in any other competitive products.
( 141 )
$6.95
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$152.95
AFR rocker arm stud girdle replacement nuts are designed to keep your rocker arms in place, while accepting an AFR double bar stud girdle. They are available in your choice of 3/8 in. or 7/16 in. thread sizes, select the rocker arm stud girdle replacement nuts best suited to fit your application.
( 7 )
$12.60
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$133.35
Crower polylocks for roller-tip, needle-bearing rocker arms are made from high quality, heat treated chromoly steel. These Crower sure lock nuts allow for precise adjustments. They include nuts and Allen head set screws for positive jam nut operation.
( 38 )
$55.99
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$78.99
Stop your rocker arms from loosening forever with these ARP Perma-Loc rocker arm adjusters. Made from heat-treated, premium-grade 8740 chromoly steel, these adjusters provide 190,000 psi tensile strength for the utmost in reliability. Other features include exclusive heads with special shouldered stops to hold the adjusting wrench, precision CNC-machined threads to ensure optimum seat pressure, flush-machined set screws for proper contact on the studs, and, best of all, they don't require any special tools for installation.
( 65 )
$69.99
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$93.99
These Summit Racing™ replacement rocker arm ball and nut kits are made for stamped steel rockers. When rebuilding an engine, it is recommended to replace the rocker studs along with the rocker ball and nuts.
( 26 )
$8.99
These Pioneer rocker arm adjusting nuts are designed for use with stamped steel rocker arms. These polylock nuts include Allen screws and a wrench.
( 4 )
$50.79
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$56.99
Summit Racing™ rocker arm stud girdle adjusting nuts are designed to keep your rocker arms in place, while accepting Summit Racing™ brand or most other brand double bar stud girdles. They are available in your choice of 3/8 in. or 7/16 in. thread sizes. Select and order the rocker arm stud girdle replacement nuts that are designed to fit your application.
( 1 )
$33.99
Proform offers these polylocks for roller rocker arms. They're designed to fit most extruded aluminum rocker arms.
( 9 )
$27.99
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$28.99
Don't cheap out with inferior rocker arm nuts--use Melling! These rocker arm nuts from Melling are made from quality-grade steel for strength and durability. They're designed to keep your rocker arms positively locked for precise and critical valvetrain adjustment. So, if you want to keep your valve settings correct for a good length of time, rely on Melling to deliver!
( 3 )
$1.99
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$2.99
Howards Cams offers a great solution to convert positive stop-type rocker arm attachments (which don't allow for any sort of adjustment) into fully adjustable valvetrains with their stud girdle adjustment nuts. These precision-machined, high-strength steel alloy parts provide minimum runout with their heat-treated construction and durable coating. Get the most out of your ride with the Howards Cams components (offered in different thread diameters) that best suit your application requirements.
( 1 )
$5.99
When installing your roller rocker arms, don't forget these rocker arm adjusting nuts from Trick Flow®. These polylocks are available in a variety of sizes to suit your needs.
( 6 )
$5.99
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$78.99
Dorman rocker arm nuts are suitable for a variety of applications. Highly resistant to rust and corrosion, all Dorman rocker arm nuts offer high-quality steel construction and direct replacement for a proper fit. They meet strict engineering quality standards to provide a long service life.
( 3 )
$20.99
Allstar Performance rocker arm nuts are designed to keep your rocker arms in place. These adjusting nuts are designed for the ultimate in strength and locking force. They are available in different threads sizes to fit your application.
( 5 )
$72.99
Scorpion offers these polylock rocker arm nuts for use with your Scorpion rocker arms. They are offered in a choice of sizes and styles to suit your application.
( 3 )
$3.57
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$38.10
Harland Sharp offers these polylocks in a choice of sizes to suit your needs.
( 5 )
$25.79
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$55.99
Engine Works rocker arm and stud girdle polylocks are manufactured from high-grade alloy steel, finished in black oxide, and feature cold-formed 12-point reduced heads for quick R and R. The bottom of each one incorporates a .550 in. step that centers the polylock on the trunnion of the rocker arm, and they are available in both 7/16 in. and 3/8 in. sizes. The stud girdle polylocks have a .950 in. long shank. Choose the size you need.
( 1 )
$30.56
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$42.46
Howards Cams rocker arm nuts feature a design for the serious performance enthusiast who wants precision in making critical valvetrain adjustments. Use these components to secure your rocker arms and adjust the clearance between them and the valves. Howards Cams offers their durable rocker arm nuts in several styles, materials, thread diameters, and finishes to suit your specific application.
( 2 )
$5.99
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$65.99
Manley rocker arm adjusting nuts are made of a special chromoly hex material. They're heat-treated and feature a black oxide finish for durability. Set screws and an Allen wrench are included.
( 3 )
$13.20
Dart rocker arm adjusting nuts are designed for use with your Dart heads. They are hardened polylock-style nuts that are direct replacements for those on your Dart stud girdles.
Not Yet Reviewed
$6.65
These Chevrolet Performance rocker arm adjusting nuts are designed for use in Chevrolet Performance Parts rocker arm kits. These polylock-style nuts are made from high-quality materials to be durable and dependable.
Not Yet Reviewed
$2.99
All Isky rocker arm adjusting nuts are designed for the ultimate in strength and locking force. The polylocks are precision-ground for minimum runout, and tapered for extra strength in the locking area. The special alloys in the polylocks ensure a quality and strength not found in any other competitive products.
( 1 )
$126.99
PRW RockerLocs stabilize your rockers. Constructed from 5140 chromoly steel and heat-treated, they are precision ground for excellent runout to keep your rocker arms in place. RockerLocs for PRW rocker arms and stud girdles are available in 3/8 in. and 7/16 in. diameters.
( 3 )
$2.78
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$70.58
Moroso slotted head adjusting nuts are designed for use with Moroso stud girdles. The slotted head design allows easier valve adjustments with a set screw, providing a positive lock. They fit on either stock or roller rockers.
( 1 )
$51.99
PRW rocker arm flange nuts are designed for ultimate strength and locking force. They are cold forged from custom 4135 steel alloy and finished with black oxide. Secure your rocker arms with PRW flange nuts.
( 1 )
$2.13
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$16.48
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