Valve Stem Seals Small Block/Big Block

Name: Valve Stem Seals Small Block/Big Block
Brand: MOPAR PERFORMANCE
SKU: 312-P4120492
Price: 20.99 USD
Availability: InStock

^$20⁹⁹

Ships on 11/06/2026

Lowest Price Guarantee

Small Block/Big Block
3/8" Stem

Made of a high-temp Viton material, these valve seals have a partial or full umbrella shape for optimal dual purpose use. Helps prevent oil seepage down valve guides. Not recommended for dual valve springs. Sold 16/pkg.

Part TypeTire Valve Stem

Product LineMopar Performance Valve Seals

BrandMOPAR PERFORMANCE

Package Height1.1

Package Width4.2

Package Length7.7

Weight0.1 PG

Part CategoryPerformance Parts

Valve Guide Diameter0.5 in (12.7 mm)

Valve Stem Seal TypeUmbrella

Machine Work RequiredNo

Valve Stem Seal MaterialRubber

QuantitySold as a set of 16

Valve Stem Diameter0.375 in (9.5 mm)

Vendor Part NumberP4120492

Package Qty1

Package TypeEA

Some parts are not legal for use in California or other states with similar laws / regulations

Valve Stem Seals Small Block/Big Block

⚠️ Warning

Motor Vehicles

Tools

Electrical Cords