Cummins QSB6.7 Engine Oil Cap 3863454 – Diesel Engine Breather Cap, OEM Replacement

Product Details

Product Overview

This high-quality Oil Cap, OEM reference number 3863454, is specifically engineered for the Cummins QSB6.7 diesel engine platform. As a critical component of the engine’s lubrication system, this cap ensures a proper seal to maintain oil pressure and prevent contamination. We provide global shipping solutions, serving major industrial markets including North America, Europe, the Middle East, and Asia-Pacific, ensuring rapid delivery to ports and distribution centers worldwide.

Key Features & Benefits

• Precision Fitment: Manufactured to exact OEM specifications (Part # 3863454) for a perfect, leak-proof seal on the QSB6.7 valve cover or oil filler neck.
• Durable Construction: Built from high-grade, heat-resistant materials to withstand the extreme temperatures and vibrations of heavy-duty diesel operation.
• Enhanced Engine Protection: Prevents dirt, debris, and moisture from entering the crankcase, protecting critical engine components from premature wear.
• Easy Installation: Simple, direct replacement with no special tools required, minimizing downtime and maintenance costs.
• Cost-Effective Solution: A premium aftermarket alternative to the original Cummins part, offering significant savings without compromising quality.

Technical Specifications

OEM Cross-Reference

This product is a direct replacement for the following OEM part numbers:

• Cummins: 3863454
• Replaces: 2872983, 2873800, 3929792

Compatibility

• Engine Applications: Cummins QSB6.7, QSB6.7-G (Generator Drive), QSB6.7-C (Industrial)
• Vehicle/Equipment Applications:
  • Agricultural Tractors (Case IH, New Holland)
  • Construction Equipment (Caterpillar, Komatsu)
  • Marine & Industrial Power Units
  • Bus & Coach Applications

Global Supply & Distribution

Our extensive supply chain ensures that this part is available for international B2B buyers. We specialize in fast, reliable shipping to meet the demands of global industrial operations.

• Worldwide Shipping: We offer shipping via sea, air, and express courier to all major ports and airports.
• Major Markets Served: North America (USA, Canada, Mexico), Europe (Germany, UK, Netherlands, France), Middle East (UAE, Saudi Arabia), Asia-Pacific (Australia, Singapore, China).
• Logistics: Efficient fulfillment from regional warehouses and direct factory dispatch ensures minimal lead times.
• Trade Compliance: All products are packaged and documented for smooth customs clearance.

Quality Assurance

• Manufacturing Standard: Produced in ISO 9001:2015 certified facilities, following strict quality control processes.
• Testing: Each batch undergoes pressure testing and material composition analysis to ensure durability and performance.
• Warranty: Backed by a comprehensive 12-month warranty against manufacturing defects.

FAQ

1. Is this oil cap a direct replacement for the original Cummins part?

Yes, this part (3863454) is designed to be a 100% direct replacement for the OEM Cummins part. It matches the original dimensions, thread pitch, and sealing surface, ensuring a perfect fit on the QSB6.7 engine.

2. What are the signs that my oil cap needs to be replaced?

Common signs include visible oil leaks around the cap area, a loose-fitting cap, or the presence of an oil film on the engine block. A damaged or missing cap can also cause a check engine light related to crankcase ventilation or low oil pressure. Replacing it is a simple, low-cost preventive maintenance step.

3. Can this cap be used on other Cummins engine models?

While specifically designed for the QSB6.7, this cap may also be compatible with the ISB6.7 and older 5.9L ISB engines that use the same filler neck design. We recommend verifying the physical fitment against your old part or checking the engine manual for the correct part number cross-reference before purchasing.