Seal,Valve Stem 4003966

positive OEM
Cummins
Part# 4003966
note
Controls oil flow to valve stems, preventing combustion chamber leakage.
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Description

The Cummins Valve Stem Seal (4003966) controls oil flow to the valve stem, preventing oil leakage into the combustion chamber. It maintains proper lubrication while minimizing oil consumption and emissions in heavy-duty engine valve trains.

Key Specifications

  • Application: Cummins L10, M11, ISM, QSM engines
  • Function: Regulates oil sealing on valve stems
  • Compatibility: Heavy-duty diesel engines, commercial vehicles
  • Construction: Steel spring, elastomer sealing material
  • Features: Oil control lip, spring-loaded design
  • Quality: OEM Cummins part

Shipping Info

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More Information

Current Part# 4003966
Type OEM
Part# variations 4003966 CUM,
4003966CUM
Manufacturer Cummins
Warranty Standard Manufacturer Warranty