Rocker Arm Nuts - 0.55 Shank Diameter (in.) - Sold as a set of 16. Quantity - In Stock Filter Options - Vendor In Stock Filter Options - Free Shipping on Orders Over $109 at Summit Racing

ARP Perma-Loc Rocker Arm Adjusters 300-8243

Rocker Arm Nuts, Roller Rockers, 3/8 in.-24 Thread, .550 in. Outside Diameter, Set of 16

Part Number: ARP-300-8243

5.0 out of 5 stars ( 9 )

Estimated Ship Date: Tomorrow

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Rocker Arm Nuts, 3/8 in.-24 Thread, 0.550 Slot Width, Set of 16

Part Number: PRO-66935

5.0 out of 5 stars ( 9 )

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Rocker Arm Nuts, Roller Rockers, 7/16 in.-20 Thread, .550 in. Outside Diameter, Set of 16

Part Number: ARP-300-8245

5.0 out of 5 stars ( 11 )

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Rocker Arm Nuts,ROCKER ARM ADJUSTERS, PRW RockerLoc, 3/8" Stud, 6 Point, .550" OD shank, Set of 16

Part Number: PQX-1200336

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Jan 28, 2026 if ordered today

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Estimated Ship Date: Jan 28, 2026 if ordered today

Rocker Arm Nuts,ROCKER ARM ADJUSTERS, Stud Girdle, PRW RockerLoc, 3/8" Stud, Short-Style, 6 Point, .550" OD shank, Set of 16

Part Number: PQX-1200316

1.0 out of 5 stars ( 1 )

Estimated Ship Date: Jan 28, 2026 if ordered today

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Estimated Ship Date: Jan 28, 2026 if ordered today