My Account
My Garage
Shopping Cart

Shopping Cart

0 items in your Cart
View Cart
Subtotal
Track
My Order
MY GARAGE Select Vehicle
MY GARAGE

COMP Cams 505-1 PTFE Valve Stem Seal for Guide Stem - 530 3/8

(Ford F-150 1975-76, Mustang 1967-70, F-250 1975-76, Thunderbird 1963-68, 1972, F-350 1975-76, Galaxie 500 1963-74, F-100 1975-76 + 298 more models)

Part of: COMP Cams PTFE Valve Stem Seal for Guide Stem

Other options in this family: COMP Cams 513-1 COMP Cams 500-1

Manufacturer

Picture for manufacturer COMP Cams

Part Number

505-1
4 reviews
Sale Price

$8.95

In Stock (10+)

delivery box

Usually delivered within 2 days

Check out with

ApplePay
Authorize Seller Badge
No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The COMP Cams 505-1 is a precision-engineered PTFE (polytetrafluoroethylene) valve stem seal designed for high-performance and stock engine applications. This seal is specifically sized for valve guides measuring .530" in diameter and valve stems measuring 3/8" (0.375").

Key Features:

  • PTFE construction provides superior heat resistance and durability compared to conventional rubber seals
  • Precisely sized for .530" valve guide diameter
  • Designed for 3/8" (0.375") valve stem diameter
  • Helps control oil consumption by preventing excess oil from entering the combustion chamber
  • Reduces valve guide wear and extends valve train life
  • Suitable for street performance, racing, and rebuild applications

PTFE valve seals offer excellent resistance to high temperatures and provide consistent sealing performance throughout the engine's RPM range. These seals are a critical component during engine rebuilds or valve train upgrades, ensuring proper lubrication while preventing oil fouling of spark plugs and excessive smoke.

Products specifications

Fits

Ford F-150 1975-76, Mustang 1967-70, F-250 1975-76, Thunderbird 1963-68, 1972, F-350 1975-76, Galaxie 500 1963-74, F-100 1975-76, F-250 Pickup 1965-76, Fairlane 1963-70, Ranchero 1967-69, Torino 1968-69, 1972-76 + 294 more models

Valve Guide Outer Diameter

0.53

Seal Outer Diameter

0.63

Valve Stem Outer Diameter

3/8

Valve Seal Type

Positive Stop PTFE

AMAZON ASIN

B000P5GCQ6

Prop 65

WARNING: Cancer and Reproductive Harm P65Warnings.ca.gov

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.

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.

Very satisfied! My intake shipped on Friday and I received it on Tuesday. Not only super fast shipping, but a great deal to boot!

Quick and easy

I ordered a hitch off of this site for Christmas, I have never heard of it nor did I know how they were, but they are great! Got my package in I'd say 4 days, very fast and it was exactly what I wanted! Only down fall was they charged me 3 times and I was short 150$ for a few days. I got my money back and I would definitely order again.

Very good customer service asked about a lot of different springs and parts for my Mazdaspeed 3.

Share icon
Return Policy
Returns are easy at Autoplicity

Not happy with a purchase? No problem. We've made returning items as easy as possible. And most purchases can be returned for free for 30 days. Learn more about our Returns Policy