In Stock
- In Stock Items. Ships Today. (12) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
- In Stock Items, Including at a Supplier. Ships In a Few Days. (26) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
- All Items, Including Not In Stock (37) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
Section
- Camshafts & Valvetrain
- Cylinder Heads
Part Type
- Valve Spring Retainers (25) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
- Valve Seats (1) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
Make/Model
Price Range
- Less than $10 (16)
- $50-$100 (10)
Filter Options
- Marine (1)
- PowerSports (1)

Selected Filters

Availability

- In Stock Items. Ships Today. (12) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
- In Stock Items, Including at a Supplier. Ships In a Few Days. (26) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
- All Items, Including Not In Stock (37) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
Filters
Section
- Camshafts & Valvetrain
- Cylinder Heads
Part Type
- Valve Spring Retainers (25) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
- Valve Seats (1) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
Make/Model
Price Range
- Less than $10 (16)
- $50-$100 (10)
Filter Options
- Marine (1)
- PowerSports (1)

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...

Showing In Stock Items. Show All 37 Items.

Individual Parts

Part Groups

Results 1 - 25 of 26

PAC Racing Springs Valve Seats PAC-S137

SEAT 4140 BLK OXIDE

Part Number: RSC-PAC-S137

Not Yet Reviewed

Estimated Ship Date: Jun 9, 2026 if ordered today

...Loading

Estimated Ship Date: Jun 9, 2026 if ordered today

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: Today

...Loading

Estimated Ship Date: Today

PAC Racing 300 Series Valve Spring Retainers PAC-R363-16

Valve Spring Retainers, 300 Series, Steel, 1.035 in. O.D., Single, Beehive, 7 degree, Set of 16

Part Number: RSC-PAC-R363-16

4.33 out of 5 stars ( 3 )

Estimated Ship Date: Today

...Loading

Estimated Ship Date: Today

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: Today

...Loading

Estimated Ship Date: Today

PAC Racing 300 Series Valve Spring Retainers PAC-R363

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

Part Number: RSC-PAC-R363

Not Yet Reviewed

Estimated Ship Date: Today

...Loading

Estimated Ship Date: Today

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: Today

...Loading

Estimated Ship Date: Today

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: Today

...Loading

Estimated Ship Date: Today

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: Jun 9, 2026 if ordered today

...Loading

Estimated Ship Date: Jun 9, 2026 if ordered today

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: Today

...Loading

Estimated Ship Date: Today

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: Today

...Loading

Estimated Ship Date: Today

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: Jun 10, 2026 if ordered today

...Loading

Estimated Ship Date: Jun 10, 2026 if ordered today

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: Jun 10, 2026 if ordered today

...Loading

Estimated Ship Date: Jun 10, 2026 if ordered today

Need It Sooner? We recommend these similar substitute parts:

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

5 out of 5 stars ( 2 )

Estimated Ship Date: Today

...Loading

PAC Racing 300 Series Valve Spring Retainers PAC-R311-16

Valve Spring Retainers, 300 Series, Steel, 1.035 in. O.D., Single, Beehive, 7 degree, Set of 16

Part Number: RSC-PAC-R311-16

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

...Loading

Estimated Ship Date: Today

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: Today

...Loading

Estimated Ship Date: Today

PAC Racing 300 Series Valve Spring Retainers PAC-R333-16

Beehive 300 Series Retainer - Retainer for Super Stock Only. Lock angle: STD 7 degree

Part Number: RSC-PAC-R333-16

Not Yet Reviewed

Estimated Ship Date: Jun 8, 2026 if ordered today

...Loading

Estimated Ship Date: Jun 8, 2026 if ordered today

PAC Racing 300 Series Valve Spring Retainers PAC-R362-16

Beehive 300 Series Retainer - Retainer for PAC-1218, 1220 & others with FMOD locks. Lock angle: FMOD 7 degree

Part Number: RSC-PAC-R362-16

Not Yet Reviewed

Estimated Ship Date: Jun 9, 2026 if ordered today

...Loading

Estimated Ship Date: Jun 9, 2026 if ordered today

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: Jun 9, 2026 if ordered today

...Loading

Estimated Ship Date: Jun 9, 2026 if ordered today

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: Jun 9, 2026 if ordered today

...Loading

Estimated Ship Date: Jun 9, 2026 if ordered today

Need It Sooner? We recommend these similar substitute parts:

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

Not Yet Reviewed

Estimated Ship Date: Today

...Loading

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: Today

...Loading

Estimated Ship Date: Today

PAC Racing 300 Series Valve Spring Retainers PAC-R333

Beehive 300 Series Retainer - Retainer for Super Stock Only. Lock angle: STD 7 degree

Part Number: RSC-PAC-R333

Not Yet Reviewed

Estimated Ship Date: Jun 8, 2026 if ordered today

...Loading

Estimated Ship Date: Jun 8, 2026 if ordered today

PAC Racing 300 Series Valve Spring Retainers PAC-R382

VALVE SPRING RETAINER

Part Number: RSC-PAC-R382

Not Yet Reviewed

Estimated Ship Date: Today

...Loading

Estimated Ship Date: Today

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: Jun 10, 2026 if ordered today

...Loading

Estimated Ship Date: Jun 10, 2026 if ordered today

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: Jun 9, 2026 if ordered today

...Loading

Estimated Ship Date: Jun 9, 2026 if ordered today

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: Jun 9, 2026 if ordered today

...Loading

Estimated Ship Date: Jun 9, 2026 if ordered today

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: Jun 10, 2026 if ordered today

...Loading

Estimated Ship Date: Jun 10, 2026 if ordered today

Page 1 of 2
Next