Description
Product Overview
The Cummins 4946030 main bearing is a genuine engine component specifically engineered to support the crankshaft and provide optimal load distribution. Its robust design minimizes friction and ensures smooth engine operation even under demanding conditions.
Crafted from high-strength materials, this main bearing withstands heavy-duty stresses, extending the lifespan of your Cummins diesel engine while maintaining peak performance.
Key Features
✅ OEM Quality – Genuine Cummins part for superior fit and reliable function.
✅ Low-Friction Operation – Reduces friction between crankshaft and engine block for improved efficiency.
✅ Durable Construction – Built from wear-resistant materials to handle heavy loads.
✅ Precise Fit – Ensures consistent, stable operation with no modification required.
✅ Enhanced Engine Life – Protects key components from premature wear and failure.
Function and Benefits
This main bearing plays a vital role in your engine’s performance by:
Supporting the crankshaft to maintain precise alignment.
Distributing load evenly to prevent premature wear.
Reducing heat and friction to improve fuel efficiency.
Promoting smooth and quiet engine operation.
Using the genuine Cummins 4946030 main bearing ensures long-lasting reliability and consistent engine performance.
Technical Specifications
Part Number: 4946030
Type: Main Bearing
Material: High-strength alloy
Application: Cummins diesel engines
Finish: Precision-machined to exact OEM standards
Installation Tips
Carefully remove the old main bearing and clean the bearing housing thoroughly.
Inspect the crankshaft journal and bearing surface for damage or wear.
Position the new main bearing in the housing, ensuring correct alignment.
Lubricate with clean engine oil to reduce friction during initial startup.
Reassemble and torque according to Cummins’ official service specifications.
⚠️ Note: Always use genuine Cummins replacement parts to guarantee proper fit and long-term reliability.
When to Replace
Replace your main bearing if you notice:
Unusual engine knocking or vibration
Excessive bearing wear, scoring, or damage
During complete engine overhauls or rebuilds
Quality Assurance
The Cummins 4946030 main bearing meets Cummins’ rigorous OEM standards:
Accurate dimensioning for precise fitment
Load testing and wear resistance validation
Performance testing under real-world engine conditions
Compatible Applications
This main bearing is designed for a wide range of Cummins diesel engines, including:
ISF2.8, ISF3.8, and other Cummins engines with compatible configurations
Why Choose the Cummins 4946030 Main Bearing?
Genuine OEM part for flawless integration
Enhances engine reliability and performance
Reduces friction and mechanical wear
Prolongs engine lifespan
Backed by Cummins’ strict quality standards
Conclusion
The Cummins 4946030 main bearing is a crucial component that supports crankshaft stability and reduces friction. For dependable engine performance and long-term durability, choose this genuine Cummins replacement part.
