Engines & Engine Parts

POLYLOCK, 7/16 HIGH ENERGY ALUMINU

Part Number: CCA-4630-1

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 4/27/2026 if shipped by air

Rocker Arm Nuts, Polylock, Stud Girdle Replacement, Full Roller, 7/16 in.-20 Thread, 0.550 in. Shank Diameter, 2.50 Length, Each

Part Number: HRS-90127-1

Not Yet Reviewed

Estimated Ship Date: Monday 4/27/2026 if shipped by air

Rocker Arm Nuts, Stamped Steel Style Rockers, 5/16-24 in. Thread, Polylock, Set of 16

Part Number: ISK-PL516

1.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 4/27/2026 if shipped by air

• Free Shipping

Rocker Arm Polylocks, Fits 3/8 in. Stud, Set of 16

Part Number: CRO-86051-16

Not Yet Reviewed

Estimated Ship Date: Monday 4/27/2026 if shipped by air

Rocker Arm Nut, Full Roller, 3/8-24 in. Thread, Polylock, Each

Part Number: CCA-4631-16

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 4/27/2026 if shipped by air

Rocker Arm Nut, Polylock, for Pro Magnum Series Rockers In GEN III LS1, LS2, and LS6 Models, Each

Part Number: CCA-4654-1

Not Yet Reviewed

Estimated Ship Date: Jun 17, 2026 if ordered today

• Drop Ship
• Special Order

Rocker Arm Nut, Power 12-Point, Polylock, 7/16 in. Stud, .600 in. O.D. Shank, .550 in. Undercut, Set of 16

Part Number: PQX-1200127

Not Yet Reviewed

Estimated Ship Date: Monday 4/27/2026 if shipped by air

Rocker Arm Nuts, Stud Girdle Replacement Nuts, Full Roller, Polylock, 7/16-20 in., 2.60 in. Overall Length, Set of 8

Part Number: AFR-6215-8

Not Yet Reviewed

Estimated Ship Date: Monday 4/27/2026 if shipped by air

Rocker Arm Stud Girdle, Solid Bar, Polylock, Aluminum, Natural, Ford, Stock Heads, Kit

Part Number: PQX-1546001

1.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 4/27/2026 if shipped by air

• Free Shipping

Rocker Arm Nuts, Stud Girdle Replacement Nuts, Polylock, 3/8-24 in., Use with Small Block Chevy and Small Block Ford AFR Stud Girdles, Each

Part Number: AFR-6216-1

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 4/27/2026 if shipped by air

Rocker Arm Stud Girdle, Solid Bar, Polylock, Aluminum, Natural, Ford, Stock Heads, Kit

Part Number: PQX-1530200

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 4/27/2026 if shipped by air

• Free Shipping

Rocker Arm Stud Girdle Nuts, Polylock, 7/16-50 in., 2.600 in. Height, 0.600 in. Minimum Slot Width, Each

Part Number: DRT-64210210

Not Yet Reviewed

Estimated Ship Date: Monday 4/27/2026 if shipped by air

PolyLocks, 7/16 -24 in. Thread, Set of 4

Part Number: SCC-SCPVTS716S-4

Not Yet Reviewed

Estimated Ship Date: Monday 4/27/2026 if shipped by air

Rocker Arms, Roller Tip, Cast Steel, 7/16 in. Stud Mount, 1.6 Ratio, Polylocks, Chevy, Small Block, Set of 16

Part Number: SUM-141704PL

3.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 4/27/2026 if shipped by air

• Free Shipping

1.65 Pontiac 7/16 Blue Race Single Rocker Arm w/ Polylock

Part Number: SCC-SCP1053-1

Not Yet Reviewed

Estimated Ship Date: Monday 4/27/2026 if shipped by air

3/8 Race Series Polylock Single

Part Number: SCC-SCPPL38-1

Not Yet Reviewed

Estimated Ship Date: Monday 4/27/2026 if shipped by air

Rocker Arm Stud Girdle, Solid Bar, Polylock, Aluminum, Blue Anodized, Ford, Ford Motorsports Heads, Kit

Part Number: PQX-1530202

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Jun 29, 2026 if ordered today

• Drop Ship
• Free Shipping
• Special Order

1.7 SBC 3/8 Narrow Body Blue Race Single Rocker Arm w/ Polylock

Part Number: SCC-SCP1076-1

5.0 out of 5 stars ( 1 )

Estimated Ship Date: May 27, 2026 if ordered today

• Drop Ship
• Special Order

Rocker Arm Stud Girdle, Solid Bar, Polylock, Aluminum, Natural, Pontiac, Edelbrock Heads, Kit

Part Number: PQX-1545501

Not Yet Reviewed

Estimated Ship Date: Monday 4/27/2026 if shipped by air

• Free Shipping

Rocker Arm Nuts, Polylock, Full Roller, 7/16 in.-20 Thread, 0.600 in. Shank Diameter, 1.190 in. Length, Each

Part Number: HRS-90036

Not Yet Reviewed

Estimated Ship Date: Monday 4/27/2026 if shipped by air

POLYLOCK REPLACEMENT

Part Number: SCC-SCPPL38-4

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 4/27/2026 if shipped by air

Rocker Arm Adjusting Nuts, Non Roller, Polylock, 7/16-20 in. Stud Thread Diameter, Set of 16

Part Number: PIO-850010

Not Yet Reviewed

Estimated Ship Date: May 14, 2026 if ordered today

• Drop Ship
• Special Order

1.8 BBC 7/16 Blue Endurance Single Rocker Arm w/ Polylock

Part Number: SCC-SCP3016-1

Not Yet Reviewed

Estimated Ship Date: May 27, 2026 if ordered today

• Drop Ship
• Special Order

Rocker Arm Stud Girdle, Solid Bar, Polylock, Aluminum, Blue Anodized, Ford, Stock Heads, Kit

Part Number: PQX-1530201

2.0 out of 5 stars ( 1 )

Estimated Ship Date: Jun 29, 2026 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Rocker Arm Nuts, Polylock, Stamped Steel Style, Full Roller, 3/8 in.-24 Thread, 0.600 in. Shank Diameter, 1.190 in. Length, , Set of 16

Part Number: HRS-92140

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 4/27/2026 if shipped by air