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Rocker Arm Nut, Power 12-Point, Polylock, 3/8 in. Stud, .550 in. O.D. Shank, Set of 16
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Estimated Ship Date: Monday 10/19/2026 Would you rather pick it up?
Overview
Brand:
Manufacturer's Part Number:
1200123
Part Type:
Product Line:
Summit Racing Part Number:
PQX-1200123
UPC:
842864025542
Rocker Arm Style:
Full roller
Rocker Arm Nut Style:
Polylock
Rocker Stud Thread Diameter:
3/8-24 in.
Overall Height (in.):
1.30 in.
Shank Diameter (in.):
0.55
For Use with Stud Girdle:
No
Quantity:
Sold as a set of 16.
PRW 12-Point Poly Locks
Upgrade your valvetrain stability with PRW 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.
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Some parts are not legal for use in California or other states with similar laws / regulations
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