Truck / SUV
Jeep®
Restoration
Stock Replacement
Late Model Muscle
Tools
Gifts, Clothing, & More
Circle Track
Street Rod
Powersports
Paint & Body
Marine
Jr Dragster
Availability
85 Results Found For "polylocks"
Showing In Stock Items. Show All 89 Items.
Not Showing Customizable Items. View Customizable Items.
Harland Sharp Polylocks Rocker Arm Nuts
Harland Sharp offers these polylocks in a choice of sizes to suit your needs.
( 5 )
$25.79
—
$55.99
Engine Works Polylocks
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.
( 2 )
$30.56
—
$42.46
Summit Racing™ Cast Steel Roller Tip Rocker Arms
For the hardest working part of your valvetrain, use Summit Racing™ cast steel roller tip rocker arms. Our chromoly steel long-slot rockers will give you a long service life and allow for less deflection and valve guide scrubbing. Each rocker features a precision-ground roller and includes a grooved, heat-treated rocker ball and nut.
( 105 )
$16.99
—
$182.99
AFR Rocker Arm Stud Girdle Replacement Nuts
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.
( 8 )
$11.99
—
$113.00
Crower Sure Lock Rocker Arm Nuts
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.
( 40 )
$55.99
—
$78.99
Summit Racing™ Rocker Arm Stud Girdles
A stud girdle distributes load across all the studs, adding strength and rigidity to the valvetrain. Summit Racing™ rocker arm stud girdles stabilize your valvetrain to gain maximum valve lift. Our double-bar design girdles are made from 6061 aluminum and anodized black. They are lightweight, durable, and add strength by tying all 8 studs together. Summit Racing™ rocker arm stud girdles include polylocks and Grade 8 bolts.
( 6 )
$123.99
—
$235.99
Pioneer Rocker Arm Adjusting Nuts
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 )
$111.99
—
$177.99
COMP Cams Rocker Arm Adjusting Nuts
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.
( 148 )
$6.95
—
$152.95
Howards Cams Stud Girdle Adjustment Nuts
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.
( 2 )
$6.99
PRW Power 12-Point Poly Locks
Upgrade your valvetrain stability with PRW Power 12-point poly locks, engineered for secure, precision rocker arm adjustment in high-performance applications. CNC-machined for accuracy, each poly lock features a flush-machined locking set screw and a shouldered design for positive wrench engagement, ensuring fast and reliable adjustments. Available for 3/8 in. (.550 in. O.D. shank) and 7/16 in. (.600 in. O.D. with .550 in. undercut) rocker studs, these poly locks deliver the durability and clamping force demanded by serious engine builders. Sold in sets of 16, PRW's 12-point design offers superior grip and ease of use in tight engine bays.
Not Yet Reviewed
$35.11
PRW Billet Rocker Arm Stud Girdles
PRW billet rocker arm stud girdles are made from 6061-T6 aluminum, manufactured to exacting standards, and the solution to valvetrain instability. PRW stud girdles reduce rocker stud flex to retain critical valve lash adjustments. The result is more accurate valve lift and timing. PRW stud girdles are relieved at the factory to accommodate crankcase evacuation components without the need to visit your local machine shop. These products come complete with PRW RockerLocs. Grab yours today!
( 9 )
$182.46
—
$302.59
Allstar Performance Valve Lash Adjusting Wrenches
Allstar Performance valve lash adjusting wrenches can save you valuable time and also help eliminate fumbling with two separate wrenches. Innovatively designed, these wrenches feature a box wrench and Allen wrench all-in-one tool! They are made of steel with insulated handles and are available for use with Jesel, T&D, and other polylock-style rocker assemblies.
( 9 )
$38.99
Scorpion Rocker Arm Nuts
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 )
$3.97
—
$42.33
Dart Rocker Arm Adjusting Nuts
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
$6.99
Howards Cams Rocker Arm Nuts
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 )
$6.99
—
$70.99
PRW RockerLocs
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
—
$70.58
Isky Rocker Arm Adjusting Nuts
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 )
$146.99
Brodix Cylinder Heads Rocker Arm Adjusting Nuts
Brodix Cylinder Heads rocker arm adjusting nuts are high-quality polylocks designed for full roller rocker arms. They're available in various sizes to suit your needs.
Not Yet Reviewed
$13.99
—
$14.99
Scorpion Race Series Rocker Arms
Sting the competition with the full-body design of Scorpion Race Series roller rocker arms. They're precision-crafted via high-tech manufacturing methods, then fully CNC-machined. These rockers offer more clearance for retainers and springs, and can easily handle .950 in. lift and 950 lbs. of open spring pressure. The surfaces are micro-polished and anodized for looks, protection, and maximum durability. Scorpion rocker arms are available in nearly 200 fitment options; order the set recommended for your application. More speed for your high performance passion! Additional features include: * Aerospace-grade 7000 Series aluminum for maximum strength and durability * Needle bearing fulcrum and roller tip * Precision-ground needle bearings * Centerless ground trunnion, ground pin, and roller * Burr-free trunnion through hole * Directed oiling * Large machined seat and thick-walled adjusting nut (polylock) * Pedestals machined from solid steel * Black oxide coated steel parts * 1.600 in. fulcrum width * Clear 1.625 in. O.D. valve springs
( 214 )
$29.32
—
$682.68
Scorpion Narrow Body Rocker Arms
Good things come in small packages. If you're a later style Chevy engine owner, you already know that, and Scorpion narrow body rockers arms are a perfect choice. These 100 percent CNC-machined rockers are made for your center bolt-down valve covers. These aluminum narrow body rocker arms can easily handle a .950 in. lift and 950 lbs. of open spring pressure. Scorpion narrow body rocker arms have micro-polished surfaces and anodized coatings for maximum durability and a great long-lasting look. Pick up some narrow body stingers from Scorpion and watch the competition scatter! Additional features: * Needle bearing fulcrum and roller tip * Centerless-ground trunnion * Ground pin and roller * Burr-free trunnion through hole * Black oxide coated steel parts * Lightweight for maximum performance
( 13 )
$32.14
—
$491.87
Scorpion Narrow Body Self-Aligning Rocker Arms
Good things come in small packages. If you're a later style Chevy engine owner, you already know that, and Scorpion narrow body self-aligning rockers arms are a perfect choice. These 100 percent CNC-machined rockers are made for your center bolt-down valve covers and eliminate the guideplate. Their aluminum narrow body is self-aligning and can easily handle a .950 in. lift and 950 lbs. of open spring pressure. Scorpion narrow body self-aligning rocker arms have micro-polished surfaces and anodized coatings for maximum durability and a great long-lasting look. Pick up some narrow body stingers from Scorpion and watch the competition scatter! Additional features: * Needle bearing fulcrum and roller tip * Centerless-ground trunnion * Ground pin and roller * Burr-free trunnion through hole * Black oxide coated steel parts * Lightweight for maximum performance
( 18 )
$34.08
—
$522.83
Scorpion Endurance Series Rocker Arms
Scorpion Endurance Series rocker arms offer you power that perseveres. With less weight and a lower profile these Endurance rocker arms are built with the stamina to get the job done in winning style. Scorpion specifically designed these rocker arms for endurance racing engines with better fitment and they can easily handle up to 750 lbs. of open spring pressure. Plus, they're approximately 28 grams lighter than their Race rockers! Endurance rocker arms are micro-polished to endure over a long period and are anodized for additional protection, as well as providing great aesthetics. Choose your ratio and gain the stamina to sting your competition with Scorpion Endurance Series rocker arms. Additional features include: * Aerospace-grade 7000 Series aluminum * Full body design * Precision ground need bearings * Centerless-ground fulcrum * Ground pin and roller * Burr-free trunnion through hole * Large machined seat * Solid steel pedestals * Black oxide coated steel parts
( 35 )
$27.68
—
$552.49
Trick Flow® Roller Rocker Arms
Accurate valve timing is the key to making horsepower—and Trick Flow® roller rocker arms can help. Excellent for use with stock and aftermarket cylinder heads, these arms feature heat-treated CNC-machined bodies, premium needle-bearing fulcrums, roller tips, and a machined relief for improved valve spring clearance. Trick Flow® roller rockers come complete with polylocks and are offered individually or in sets of 16. They're available in a variety of fitment options for applications from 1955 and up.
( 68 )
$31.99
—
$509.99
Jaz Products Rocker Arm and Lifter Organizer Trays
Jaz Products features these lightweight rocker arm and lifter organizer trays to hold pushrods, lifters, polylocks, spark plugs, and rocker arms. With a built-in carrying handle to provide easy portability, these rocker arm and lifter organizer trays by Jaz Products are a great way to keep parts organized and easily accessible within arm's reach.
( 27 )
$41.99
