1948-1977 Harley-Davidson Touring / Sportster / FX Supreme FKM Valve Stem Seal
$1.32
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Fitment Verified
Warranty Included
30-Day Returns
This professional-grade valve stem seal provides a precision-engineered sealing solution for routine valvetrain maintenance and cylinder head rebuilds. Manufactured from premium FKM rubber (Viton), this robust seal is engineered to withstand extreme combustion temperatures, aggressive engine oils, and constant friction without degrading. It delivers an exact, reliable fit to regulate oil flow down the valve guide, prevent oil consumption, and maintain optimal engine compression.
This valve stem seal fits 1948-1977 Harley-Davidson Touring, FX, and Sportster models with Panhead and Shovelhead engines.
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Weight
0.012400
Nominal Stem Size
3/8"
Nominal Guide Size
.610"
Seal Type
Tophat
Sold As
Individual Part
Material
FKM Rubber
Parts Type
Valve Stem Seal
Compatible Models
10 Fits
Touring
1948–1977
7 models
▼
Sportster
1970–1974
1 model
▼
FX
1971–1977
2 models
▼
⚠ Always verify fitment before ordering.