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Oil Filler Cap Cummins 3863454
High-quality oil filler cap designed to provide a secure, leak-proof seal for Cummins B and C series engine lubrication systems.
Description
Reliable Sealing for Cummins Lubrication Systems
The Cummins 3863454 Oil Filler Cap is a vital component for maintaining the integrity of your engine’s lubrication system. Designed to fit securely onto the valve cover, this cap ensures that engine oil remains contained while preventing dust, dirt, and moisture from entering the system. A properly functioning filler cap is essential for preventing oil loss and protecting internal engine components from contamination.
Key Features and Benefits
- Precision Fit: Engineered specifically for Cummins B and C series valve covers to ensure a tight, leak-free seal.
- Durable Construction: Manufactured from high-grade materials resistant to engine heat and chemical degradation from oil.
- Contamination Protection: Prevents environmental debris from entering the oil supply, extending the life of your engine.
- Easy Maintenance: Ergonomic design allows for easy removal and installation during routine oil changes.
Engine Compatibility
This filler cap is used across a wide range of Cummins engine models, including:
- B Series: 4B3.9, 6B5.9, B3.3, B6.7
- C Series: 6C8.3, ISC, QSC8.3, QSC9
- ISB/QSB Series: ISB6.7, QSB4.5, QSB6.7, QSB7
- L Series: L8.9, QSL8.9, QSL9
Technical Specifications
- Weight: 0.195 lb
- Dimensions: 3.75 x 3.5 x 2.45 in
- Application: Oil Fill Arrangement / Valve Cover



