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26 Results Found For "4140"

26 Results Found For "4140"

PAC Racing Springs delivers superior valvetrain stability and performance. Just ask the thousands of competitors who use PAC springs on top motorsports circuits—NHRA,...

PAC Racing Springs delivers superior valvetrain stability and performance. Just ask the thousands of competitors who use PAC springs on top motorsports circuits—NHRA, NASCAR, NMRA, Formula 1, 24 Hours of LeMans, Sprint Car, IHBA Boat Racing, Baja 1000, and more. PAC Racing Springs valve springs, valve locks, lifters, and retainers are designed and forged with the latest technology. We’ve got innovative, proven PAC Racing single, dual, triple, and beehive valve springs to meet your competition engine’s demands. Plus, we have titanium and steel valve locks, plastic valve spring dampers, titanium and steel...

PAC Racing Springs delivers superior valvetrain stability and performance. Just ask the thousands of competitors who use PAC springs on top motorsports circuits—NHRA, NASCAR, NMRA, Formula 1, 24 Hours of LeMans, Sprint Car, IHBA Boat Racing, Baja 1000, and more. PAC Racing Springs valve springs, valve locks, lifters, and retainers are designed and forged with the latest technology. We’ve got innovative, proven PAC Racing single, dual, triple, and beehive valve springs to meet your competition engine’s demands. Plus, we have titanium and steel valve locks, plastic valve spring dampers, titanium and steel retainers, and more. Shop PAC Racing Springs at Summit Racing today!

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PAC Racing Springs Valve Seats PAC-S137

PAC Racing Springs Valve Seats PAC-S137

PAC Racing Springs Valve Seats PAC-S137

SEAT 4140 BLK OXIDE

Part Number: RSC-PAC-S137

Not Yet Reviewed

Estimated Ship Date: Mar 16, 2026 if ordered today

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Estimated Ship Date: Mar 16, 2026 if ordered today

PAC Racing 300 Series Valve Spring Retainers PAC-R310-16

PAC Racing 300 Series Valve Spring Retainers PAC-R310-16

PAC Racing 300 Series Valve Spring Retainers PAC-R310-16

Valve Spring Retainers, 300 Series, Steel, 1.035 in. O.D., Single, Beehive, 10 degree, Set of 16

Part Number: RSC-PAC-R310-16

4.67 out of 5 stars ( 3 )

Estimated Ship Date: Tomorrow

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PAC Racing 300 Series Valve Spring Retainers PAC-R313-16

PAC Racing 300 Series Valve Spring Retainers PAC-R313-16

PAC Racing 300 Series Valve Spring Retainers PAC-R313-16

Beehive Spring Retainer 300 Series - Retainer for PAC-1255, 1295, & 1595 Valve Springs. Lock angle: STD 10 de

Part Number: RSC-PAC-R313-16

Not Yet Reviewed

Estimated Ship Date: Tomorrow

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PAC Racing 300 Series Valve Spring Retainers PAC-R310

PAC Racing 300 Series Valve Spring Retainers PAC-R310

PAC Racing 300 Series Valve Spring Retainers PAC-R310

Valve Spring Retainer, 300 Series, Steel, 1.035 in. O.D., Single, Beehive, 10 degree, Each

Part Number: RSC-PAC-R310

Not Yet Reviewed

Estimated Ship Date: Tomorrow

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

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

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

Dual Spring 300 Series Retainer - Retainer for LS RPM Series Dual Valve Springs. Lock angle: LS 7 degree

Part Number: RSC-PAC-R335-16

Not Yet Reviewed

Estimated Ship Date: Tomorrow

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Estimated Ship Date: Tomorrow

PAC Racing 300 Series Valve Spring Retainers PAC-R311

PAC Racing 300 Series Valve Spring Retainers PAC-R311

PAC Racing 300 Series Valve Spring Retainers PAC-R311

Valve Spring Retainer, 300 Series, Steel, 1.035 in. O.D., Single, Beehive, 7 degree, Each

Part Number: RSC-PAC-R311

Not Yet Reviewed

Estimated Ship Date: Tomorrow

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PAC Racing 300 Series Valve Spring Retainers PAC-R312-16

PAC Racing 300 Series Valve Spring Retainers PAC-R312-16

PAC Racing 300 Series Valve Spring Retainers PAC-R312-16

Valve Spring Retainers, 300 Series, Steel, 0.865 in. O.D., Single, Beehive, 7 degree, Set of 16

Part Number: RSC-PAC-R312-16

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Tomorrow

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Estimated Ship Date: Tomorrow

PAC Racing 300 Series Valve Spring Retainers PAC-R316-16

PAC Racing 300 Series Valve Spring Retainers PAC-R316-16

PAC Racing 300 Series Valve Spring Retainers PAC-R316-16

Valve Spring Retainers, 300 Series, Steel, 1.235 in. O.D., Dual, 7 degree, Set of 16

Part Number: RSC-PAC-R316-16

Not Yet Reviewed

Estimated Ship Date: Mar 16, 2026 if ordered today

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Estimated Ship Date: Mar 16, 2026 if ordered today

PAC Racing 300 Series Valve Spring Retainers PAC-R391

PAC Racing 300 Series Valve Spring Retainers PAC-R391

PAC Racing 300 Series Valve Spring Retainers PAC-R391

Valve Spring Retainers, 300 Series, Steel, 1.400 in. O.D., Dual, 10 degree, Each

Part Number: RSC-PAC-R391

Not Yet Reviewed

Estimated Ship Date: Tomorrow

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PAC Racing 300 Series Valve Spring Retainers PAC-R349-16

PAC Racing 300 Series Valve Spring Retainers PAC-R349-16

PAC Racing 300 Series Valve Spring Retainers PAC-R349-16

Dual Spring 300 Series Retainer - Retainer for PAC-1200 & 1201. Lock angle: STD 8

Part Number: RSC-PAC-R349-16

Not Yet Reviewed

Estimated Ship Date: Mar 16, 2026 if ordered today

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Estimated Ship Date: Mar 16, 2026 if ordered today

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PAC Racing 300 Series Valve Spring Retainers PAC-R349

PAC Racing 300 Series Valve Spring Retainers PAC-R349

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PAC Racing 300 Series Valve Spring Retainers PAC-R342-16

PAC Racing 300 Series Valve Spring Retainers PAC-R342-16

PAC Racing 300 Series Valve Spring Retainers PAC-R342-16

Beehive 300 Series Retainer - Retainer for V-Rod. Lock angle: 6 degree

Part Number: RSC-PAC-R342-16

Not Yet Reviewed

Estimated Ship Date: Mar 16, 2026 if ordered today

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Estimated Ship Date: Mar 16, 2026 if ordered today

PAC Racing 300 Series Valve Spring Retainers PAC-R334-16

PAC Racing 300 Series Valve Spring Retainers PAC-R334-16

PAC Racing 300 Series Valve Spring Retainers PAC-R334-16

Dual Spring 300 Series Retainer - Retainer for PAC-1202 & 1203 Valve Springs. Lock angle: 7 degree

Part Number: RSC-PAC-R334-16

Not Yet Reviewed

Estimated Ship Date: Mar 16, 2026 if ordered today

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Estimated Ship Date: Mar 16, 2026 if ordered today

PAC Racing 300 Series Valve Spring Retainers PAC-R335

PAC Racing 300 Series Valve Spring Retainers PAC-R335

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

Not Yet Reviewed

Estimated Ship Date: Mar 16, 2026 if ordered today

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Estimated Ship Date: Mar 16, 2026 if ordered today

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

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

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PAC Racing 300 Series Valve Spring Retainers PAC-R346

PAC Racing 300 Series Valve Spring Retainers PAC-R346

PAC Racing 300 Series Valve Spring Retainers PAC-R346

Valve Spring Retainer, 300 Series, Steel, 0.800 in. O.D., Single, Tall, Beehive, 7 degree, Each

Part Number: RSC-PAC-R346

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Tomorrow

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Estimated Ship Date: Tomorrow

PAC Racing 300 Series Valve Spring Retainers PAC-R313

PAC Racing 300 Series Valve Spring Retainers PAC-R313

PAC Racing 300 Series Valve Spring Retainers PAC-R313

Beehive Spring Retainer 300 Series - Retainer for PAC-1255, 1295, & 1595 Valve Springs. Lock angle: STD 10 de

Part Number: RSC-PAC-R313

Not Yet Reviewed

Estimated Ship Date: Mar 16, 2026 if ordered today

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Estimated Ship Date: Mar 16, 2026 if ordered today

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PAC Racing 300 Series Valve Spring Retainers PAC-R313-16

PAC Racing 300 Series Valve Spring Retainers PAC-R313-16

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PAC Racing 300 Series Valve Spring Retainers PAC-R315

PAC Racing 300 Series Valve Spring Retainers PAC-R315

PAC Racing 300 Series Valve Spring Retainers PAC-R315

Dual Spring 300 Series Retainer - Retainer for Marine Applications. Lock angle: STD 10 degree

Part Number: RSC-PAC-R315

Not Yet Reviewed

Estimated Ship Date: Mar 16, 2026 if ordered today

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Estimated Ship Date: Mar 16, 2026 if ordered today

PAC Racing 300 Series Valve Spring Retainers PAC-R312

PAC Racing 300 Series Valve Spring Retainers PAC-R312

PAC Racing 300 Series Valve Spring Retainers PAC-R312

Valve Spring Retainer, 300 Series, Steel, 0.865 in. O.D., Single, Beehive, 7 degree, Each

Part Number: RSC-PAC-R312

Not Yet Reviewed

Estimated Ship Date: Mar 16, 2026 if ordered today

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Estimated Ship Date: Mar 16, 2026 if ordered today

Need It Sooner? We recommend these similar substitute parts:

PAC Racing 300 Series Valve Spring Retainers PAC-R312-16

PAC Racing 300 Series Valve Spring Retainers PAC-R312-16

5 out of 5 stars ( 2 )

Estimated Ship Date: Tomorrow

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PAC Racing 300 Series Valve Spring Retainers PAC-R334

PAC Racing 300 Series Valve Spring Retainers PAC-R334

PAC Racing 300 Series Valve Spring Retainers PAC-R334

Dual Spring 300 Series Retainer - Retainer for PAC-1202 & 1203 Valve Springs. Lock angle: 7 degree

Part Number: RSC-PAC-R334

Not Yet Reviewed

Estimated Ship Date: Mar 16, 2026 if ordered today

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Estimated Ship Date: Mar 16, 2026 if ordered today

PAC Racing 300 Series Valve Spring Retainers PAC-R349

PAC Racing 300 Series Valve Spring Retainers PAC-R349

PAC Racing 300 Series Valve Spring Retainers PAC-R349

Dual Spring 300 Series Retainer - Retainer for PAC-1200 & 1201. Lock angle: STD 8

Part Number: RSC-PAC-R349

Not Yet Reviewed

Estimated Ship Date: Tomorrow

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PAC Racing 300 Series Valve Spring Retainers PAC-R382

PAC Racing 300 Series Valve Spring Retainers PAC-R382

PAC Racing 300 Series Valve Spring Retainers PAC-R382

VALVE SPRING RETAINER

Part Number: RSC-PAC-R382

Not Yet Reviewed

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PAC Racing 300 Series Valve Spring Retainers PAC-R316

PAC Racing 300 Series Valve Spring Retainers PAC-R316

PAC Racing 300 Series Valve Spring Retainers PAC-R316

Valve Spring Retainer, 300 Series, Steel, 1.235 in. O.D., Dual, 7 degree, Each

Part Number: RSC-PAC-R316

Not Yet Reviewed

Estimated Ship Date: Mar 16, 2026 if ordered today

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Estimated Ship Date: Mar 16, 2026 if ordered today

PAC Racing 300 Series Valve Spring Retainers PAC-R355

PAC Racing 300 Series Valve Spring Retainers PAC-R355

PAC Racing 300 Series Valve Spring Retainers PAC-R355

Dual Spring 300 Series Retainer - Retainer for PAC-1222X LS Spring. Lock angle: LS 7 degree

Part Number: RSC-PAC-R355

Not Yet Reviewed

Estimated Ship Date: Mar 16, 2026 if ordered today

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Estimated Ship Date: Mar 16, 2026 if ordered today

PAC Racing 300 Series Valve Spring Retainers PAC-R331

PAC Racing 300 Series Valve Spring Retainers PAC-R331

PAC Racing 300 Series Valve Spring Retainers PAC-R331

Valve Spring Retainer, 300 Series, Steel, 0.800 in. O.D., Single, Beehive, 7 degree, Each

Part Number: RSC-PAC-R331

Not Yet Reviewed

Estimated Ship Date: Mar 16, 2026 if ordered today

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Estimated Ship Date: Mar 16, 2026 if ordered today

PAC Racing 300 Series Valve Spring Retainers for 2007-2016 COOPER - PAC-R375

PAC Racing 300 Series Valve Spring Retainers for 2007-2016 COOPER - PAC-R375

PAC Racing 300 Series Valve Spring Retainers for 2007-2016 COOPER - PAC-R375

Valve Spring Retainers, 300 Series, Chromoly Steel, 1.015 in. O.D., Single, Beehive, 7 degree, Mini, Each

Part Number: RSC-PAC-R375

Not Yet Reviewed

Estimated Ship Date: Mar 16, 2026 if ordered today

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Estimated Ship Date: Mar 16, 2026 if ordered today

PAC Racing 300 Series Valve Spring Retainers PAC-R342

PAC Racing 300 Series Valve Spring Retainers PAC-R342

PAC Racing 300 Series Valve Spring Retainers PAC-R342

Beehive 300 Series Retainer - Retainer for V-Rod. Lock angle: 6 degree

Part Number: RSC-PAC-R342

Not Yet Reviewed

Estimated Ship Date: Mar 16, 2026 if ordered today

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Estimated Ship Date: Mar 16, 2026 if ordered today

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