This Gear Housing Access Hole Cover is a high-quality aftermarket replacement part compatible with Cummins 4B 6B 6C ISC Series Engine and matches OEM Part# 3903463.
Product Overview
This heavy-duty gear housing access hole cover is designed to provide a secure and reliable seal for your engine's timing gear compartment. Engineered specifically for Cummins diesel engines, it prevents contaminants from entering the housing while maintaining internal pressure integrity. Its robust construction ensures long-term performance in high-vibration and extreme temperature environments.
Key Features & Performance
Precision-molded to meet original equipment dimensions for a perfect fit.
Constructed from high-grade materials resistant to oil, heat, and engine fluids.
Direct replacement design simplifies maintenance and repair workflows.
Protects critical internal gear components from dust, dirt, and debris.
Fitment & Compatibility
Cummins 4B Series Engines
Cummins 6B Series Engines
Cummins 6C Series Engines
Cummins ISC Series Engines
Technical Specifications
Part Number(s): 3903463
Component Type: Gear Housing Access Cover
Fitment Type: Direct Replacement
Material: High-Strength Engine-Grade Composite
Frequently Asked Questions
Q: Is this part manufactured to the same dimensions as the original factory cover? A: Yes, this aftermarket component is engineered to match the precise specifications of OEM part 3903463 for seamless installation. Q: Does this cover include a new seal or O-ring? A: This listing is for the cover itself; it is recommended to inspect your existing seal or purchase a new gasket to ensure a leak-proof fit during installation.
Compatibility may vary by serial number. Verify fitment before purchase.
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