Description
COMP Cams offers a complete line of valve stem Seals, from the stock GM "O-Ring" to the positive-stop PTFE Seal. These Seals are a must to keep unwanted oil from entering the combustion chamber through the clearance in the valve guides. The "O-Ring" Seals use the standard retainer and oil splash shield. The umbrella Seal is normally used when a larger-than-stock diameter spring is used, in the case of a double spring, the positive-stop PTFE Seal is used. We also have a smaller diameter Viton Seal available for triple spring Applications.
Product Overview
COMP Cams offers a complete line of valve stem oil seals, from the stock GM o-ring to the positive-stop PTFE seal. These seals are a must to keep unwanted oil from entering the combustion chamber through the clearance in the valve guides. The o-ring seals use the standard retainer and oil splash shield. The umbrella seal is normally used when a larger than-stock diameter spring is used, and in the case of a double spring, the positive-stop PTFE seal is used. Smaller diameter Viton seals are also available for triple spring applications. Both the o-ring and the umbrella seals require no machining, but when using the PTFE seal it is necessary to disassemble the heads and machine the top of the guide with a special cutter, which can also be found on this page.
Product Details
| Amazon ASIN: | B000P599XY |
|---|---|
| C.A.R.B. E.O. Number: | N/A |
| C.A.R.B. Exempt for California Certified Vehicles Manufactured Before 1965?: | Yes, but must meet tailpipe emission standards for year of vehicle. |
| C.A.R.B. Exempt for Federally Certified Vehicles Manufactured Before 1967?: | Yes, but must meet tailpipe emission standards for year of vehicle. |
| C.A.R.B. Exempt for Foreign Vehicles Manufactured Before 1967?: | Yes, but must meet tailpipe emission standards for year of vehicle. |
| C.A.R.B. Exempt for On-Road Vehicles?: | Yes |
| C.A.R.B. Exempt for Racing and Off-Road Only Vehicles?: | Yes, but must be a race/competition only vehicle. |
| C.A.R.B. Exemption Reason: | No impact on pollution output of vehicle. |
| California Proposition 65: | WARNING: Cancer and Reproductive Harm P65Warnings.ca.gov |
| Description: | Set of 12 PTFE Valve Seals for .530" Guide Size, 11/32" Valve Stem |
| Guide Size: | .530" |
| Part Number: | cca503-12 |
| Seal Outer Diameter: | 0.63 |
| Title: | Set of 12 PTFE Valve Seals for .530" Guide Size, 11/32" Valve Stem |
| Valve Guide Outer Diameter: | 0.53 |
| Valve Seal Type: | Positive Stop PTFE |
| Valve Size: | 11/32" / .630" |
| Valve Stem Outer Diameter: | 11/32 |
Application Summary
Engines w/ 0.530" OD Valve Guides and 11/32" Valve Stems
Part Type
Engine Valve Stem Oil Seal Set
Specifications
- Product Attributes - Brand
- COMP Cams
- Product Attributes - Manufacturer's Part Number
- 503-12
- Product Attributes - Part Type
- Engine Valve Stem Oil Seals
- Product Attributes - Product Line
- COMP Cams Valve Seals
- Product Attributes - UPC
- 036584140153
- Product Attributes - Valve Stem Diameter (in.)
- 0.344 in.
- Product Attributes - Valve Stem Diameter (mm)
- 8.74mm
- Product Attributes - Valve Stem Seal Type
- Positive stop
- Product Attributes - Valve Stem Seal Material
- PTFE
- Product Attributes - Machine Work Required
- Yes
- Product Attributes - Valve Guide Diameter (in.)
- 0.530 in.
- Product Attributes - Quantity
- Sold as a set of 12.
- Product Attributes - Notes
- Requires machining the top of the valve guide with a special .530 in. diameter cutter.
Reference Information
| Brand Name/s | Comp Cams |
|---|---|
| StreetFX SKU | cca503-12 |
| SFX Item ID | 4120523 |
| Supplier Item Code | 4120523 |
| Manufacturer SKU | 503-12 |
| Manufacturer UPC | 36584140153 |
| Alternative References | CPC503-12, 11/32in |
Brochures
Compatibility
Engines w/ 0.530" OD Valve Guides and 11/32" Valve Stems
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