Description
Product Overview
The Cummins 4895459 oil filler cap is an original equipment manufacturer (OEM) component engineered to provide a secure seal for the engine’s oil filler port. Its primary function is to prevent oil leakage and protect the engine from dust, dirt, and other harmful contaminants.
Made with high-quality materials, this cap offers long-lasting durability, even under extreme temperature and vibration conditions. Whether for maintenance or replacement, it fits seamlessly into compatible Cummins diesel engines, helping to maintain optimal performance and cleanliness.
Key Features
- ✅ OEM Quality: Genuine Cummins part ensures perfect fit and reliability.
- ✅ Leak Prevention: Maintains tight seal to avoid oil leakage.
- ✅ Contaminant Protection: Shields the engine’s internals from debris and dust.
- ✅ Durable Design: Resists heat, vibration, and chemical exposure.
- ✅ Simple Installation: Threaded or twist-lock fit for easy replacement.
Function and Purpose
This filler cap plays a crucial role in engine protection. Besides sealing the oil fill port, it contributes to overall engine cleanliness and system integrity. When left uncovered or poorly sealed, the oil system can be exposed to contaminants, which may reduce lubrication effectiveness and cause premature wear.
The 4895459 cap eliminates that risk by:
- Ensuring a proper seal during operation and maintenance
- Reducing oil loss due to evaporation or splashing
- Providing an access point for convenient oil refills
Technical Specifications
- Part Number: 4895459
- Type: Oil Filler Cap
- Application: Engine oil system
- Material: Heat-resistant polymer or metal alloy
- Seal Type: Threaded or twist-lock (depending on model)
- Compatible Engines: ISF2.8, ISF3.8, and other Cummins series
- Color/Finish: Typically black with marked symbol or logo
Installation Guidelines
- Turn off the engine and allow it to cool.
- Unscrew or unlock the existing cap.
- Inspect for cracks or worn gaskets.
- Install the new Cummins 4895459 cap securely.
- Wipe any excess oil around the opening.
⚠️ Note: Ensure the cap is fully tightened. A loose cap may cause oil leakage or activate check engine indicators.
When to Replace the Oil Filler Cap
Replace your oil filler cap if you notice:
- Oil residue around the filler opening
- Cracks, damage, or worn threads
- Unusual engine smells or vapor leaks
- Poor sealing or cap loosening during operation
Timely replacement helps avoid contamination, oil loss, and pressure imbalances in the crankcase.
Quality Control
Each Cummins 4895459 oil filler cap is produced under strict quality standards. The cap is:
- Tested for seal integrity
- Resistant to thermal cycling and vibration
- Certified for OEM compatibility
- Designed for extended service intervals
Compatible Cummins Engines
The 4895459 oil filler cap is commonly used in:
- Cummins ISF2.8 / ISF3.8
- ISBE series
- Other mid-size diesel engine platforms
Confirm engine model compatibility before installation.
Why Choose the Cummins 4895459 Cap?
- Protects engine oil system from contaminants
- Prevents oil loss and vapor escape
- Matches factory specifications exactly
- Simple and fast to replace
- Engineered for diesel performance environments
Conclusion
The Cummins 4895459 oil filler cap is more than just a cover—it’s a critical component in maintaining engine cleanliness, efficiency, and reliability. With its OEM quality, heat-resistant design, and effective sealing capability, it supports the long-term health of your Cummins engine.
For dependable sealing performance, choose only genuine Cummins components like the 4895459 cap.
