Engines & Components | Summit Racing

PAC Racing Valve Spring Seats and Cups PAC-S161

Valve Spring Locator, Inside Locating Shoulder, Chromoly, 1.350 in. O.D., 0.575 in. I.D., 0.060 in. Thick, Each

Part Number: RSC-PAC-S161

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Estimated Ship Date: Jun 23, 2026 if ordered today

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Estimated Ship Date: Jun 23, 2026 if ordered today

COMP Cams Valve Spring Shims 4740-1

COMP Cams Valve Spring Shims 4740-1

Valve Spring Shim, Steel, Hardened, 1.640 in. Outside Diameter, .015 in. Thick, Each

Part Number: CCA-4740-1

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Estimated Ship Date: Jun 22, 2026 if ordered today

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Estimated Ship Date: Jun 22, 2026 if ordered today

PAC Racing Valve Spring Seats and Cups PAC-S117

Steel Spring Seats (0.060 Thickness)

Part Number: RSC-PAC-S117

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Estimated Ship Date: Jun 26, 2026 if ordered today

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Estimated Ship Date: Jun 26, 2026 if ordered today

PAC Racing Valve Spring Seats and Cups PAC-S135

Steel Spring Seat for All LS Springs for use in Small Block

Part Number: RSC-PAC-S135

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AFR Steel Valve Spring Retainers 8511-1

Valve Spring Retainer, 10 degree, 1.500 in. O.D., Steel, Each

Part Number: AFR-8511-1

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Melling Valve Springs 466174

Valve Springs, Single, 1.475 in. O.D., 1.125 in. Coil Bind Height, Each

Part Number: MEL-466174

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Howards Cams Valve Spring Cups and Locators 96005-1

Valve Spring Locators, Outside, Steel, .060 in. Thick, 1.475 in. O.D., .680 in. I.D., Each

Part Number: HRS-96005-1

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Estimated Ship Date: Jun 23, 2026 if ordered today

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Estimated Ship Date: Jun 23, 2026 if ordered today

Manley Valve Spring Shims 03263-1

Valve Spring Shim, Hardened, 0.645 in. I.D., 1.500 in. O.D., 0.030 in. Thick, Each

Part Number: MAN-03263-1

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Estimated Ship Date: Jun 12, 2026 if ordered today

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Estimated Ship Date: Jun 12, 2026 if ordered today

PAC Racing Valve Spring Seats and Cups PAC-S128

Steel Spring Seats (0.060 Thickness)

Part Number: RSC-PAC-S128

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Melling Valve Springs VS-510

Valve Springs, Single, 1.285/1.299 in. Diameter, 70-80 lbs. Seat Pressure, 1.260 in. Coil Bind Height, Each

Part Number: MEL-VS-510

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Estimated Ship Date: May 26, 2026 if ordered today

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Estimated Ship Date: May 26, 2026 if ordered today

PAC Racing Valve Spring Seats and Cups PAC-S136

Steel Spring Seats 0.030 thick for RPM Dual Springs

Part Number: RSC-PAC-S136

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Estimated Ship Date: Jun 26, 2026 if ordered today

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Estimated Ship Date: Jun 26, 2026 if ordered today

PAC Racing Valve Spring Seats and Cups PAC-S118

Steel Spring Seats (0.060 Thickness)

Part Number: RSC-PAC-S118

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Estimated Ship Date: Jun 26, 2026 if ordered today

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Estimated Ship Date: Jun 26, 2026 if ordered today

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PAC Racing Valve Spring Seats and Cups PAC-S118-16

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BTR Valve Spring Locators SL520060-1

VALVE SPRING LOCATOR, BTR SPRING LOCATOR - FOR DART/RHS LS GUIDES - .060" THICK - SOLD INDIVIDUALLY - SL565060-1

Part Number: BTC-SL5200601

Not Yet Reviewed

Estimated Ship Date: May 14, 2026 if ordered today

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Estimated Ship Date: May 14, 2026 if ordered today

Melling Valve Spring Retainers 475044

Valve Spring Retainers, Single, Steel, 1.375 in. Spring O.D., 0.344 in. Stem Diameter, 7-Degree Lock, Each

Part Number: MEL-475044

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Melling Valve Springs 466354

Valve Springs, Single, 1.220 in. O.D., 1.190 in. Coil Bind Height, Each

Part Number: MEL-466354

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COMP Cams Valve Springs 975-1

Valve Spring, Single, .953 in. Outside Diameter, 144 lbs./in. Rate, .950 in. Coil Bind Height, Each

Part Number: CCA-975-1

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Manley Valve Spring Shims 03236-1

Valve Spring Shim, Hardened, 0.703 in. I.D., 1.480 in. O.D., 0.060 in. Thick, Each

Part Number: MAN-03236-1

Not Yet Reviewed

Estimated Ship Date: Jun 15, 2026 if ordered today

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Estimated Ship Date: Jun 15, 2026 if ordered today

Manley Valve Spring Cups and Locators 42121-1

Valve Spring Locator, Outside, Steel, .062 in. Thick, 1.740 in. O.D., .635 in. I.D., Each

Part Number: MAN-42121-1

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Jun 15, 2026 if ordered today

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Estimated Ship Date: Jun 15, 2026 if ordered today

PAC Racing Valve Spring Seats and Cups PAC-S160

Valve Spring Locator, Inside Locating Shoulder, Chromoly, 1.350 in. O.D., 0.575 in. I.D., 0.060 in. Thick, Each

Part Number: RSC-PAC-S160

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Estimated Ship Date: Jun 23, 2026 if ordered today

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Estimated Ship Date: Jun 23, 2026 if ordered today

COMP Cams Valve Spring Shims 4751-1

Valve Spring Shim, Steel, Hardened, 1.500 in. Outside Diameter, .060 in. Thick, Each

Part Number: CCA-4751-1

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Estimated Ship Date: Jun 23, 2026 if ordered today

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Estimated Ship Date: Jun 23, 2026 if ordered today

COMP Cams Valve Spring Shims 4742-1

Valve Spring Shim, Steel, Hardened, 1.250 in. Outside Diameter, .030 in. Thick, Each

Part Number: CCA-4742-1

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Estimated Ship Date: Jun 23, 2026 if ordered today

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Estimated Ship Date: Jun 23, 2026 if ordered today

Chevrolet Performance Valve Springs 94666580

Valve Spring, Single, 1.241 in. Outside Diameter, 1.700 in. Installed Height, Each

Part Number: NAL-94666580

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BTR Valve Spring Locators SL505045-1

VALVE SPRING LOCATOR, BTR SPRING LOCATOR - FOR OEM LS GUIDES - .045" THICK - SOLD INDIVIDUALLY - SL505045-1

Part Number: BTC-SL5050451

Not Yet Reviewed

Estimated Ship Date: May 18, 2026 if ordered today

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Estimated Ship Date: May 18, 2026 if ordered today

Manley Valve Spring Cups and Locators 42377-1

Valve Spring Locator, Outside, Steel, .062 in. Thick, 1.680 in. O.D., .577 in. I.D., Each

Part Number: MAN-42377-1

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Estimated Ship Date: Jun 15, 2026 if ordered today

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Estimated Ship Date: Jun 15, 2026 if ordered today

PAC Racing 300 Series Valve Spring Retainers PAC-R335

Valve Spring Retainers, 300 Series, Dual Spring, 7 Degree, 1.300 in. O.D. Outer, 0.940 in. O.D. Inner, Chromoly Steel, Chevy, LS, Each

Part Number: RSC-PAC-R335

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Estimated Ship Date: Jun 26, 2026 if ordered today

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Estimated Ship Date: Jun 26, 2026 if ordered today

Need It Sooner? We recommend these similar substitute parts:

PAC Racing 300 Series Valve Spring Retainers PAC-R335-16

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