ISBE185 Main Bearing & Connecting Rod Bearing Set 3939859 3802070 4893693 for Cummins Engine Parts

Product Details

Product Overview

This comprehensive bearing set includes both main bearings and connecting rod bearings specifically designed for the Cummins ISBE185 diesel engine. The kit comprises critical OEM reference numbers 3939859, 3802070, and 4893693, ensuring a precise match for your engine rebuild or maintenance requirements.

Manufactured to original equipment specifications, these bearings provide the exact clearance and load-bearing characteristics required for the ISBE185’s high-performance diesel operation. Commonly used in heavy equipment such as excavators, loaders, and trucks, this bearing set is essential for restoring engine integrity and prolonging service life.

Key Features & Benefits

• OEM Specification Fitment: Engineered to match Cummins ISBE185 factory tolerances for main and connecting rod journals, ensuring proper oil clearance and load distribution.
• Complete Kit Convenience: Includes both main bearings (3939859) and connecting rod bearings (3802070, 4893693) in one package, simplifying parts procurement for engine overhauls.
• Durable Material Composition: Manufactured from high-strength steel-backed aluminum alloy or trimetal layers, providing excellent fatigue resistance and wear characteristics under heavy loads.
• Precision Machining: Each bearing half is precision-machined to strict dimensional tolerances, reducing installation time and eliminating the need for selective fitting.
• Enhanced Oil Retention: Designed with optimized oil grooves and lubrication channels to maintain consistent oil film thickness, reducing friction and heat generation.
• Corrosion Protection: Treated with anti-corrosion coating to withstand storage and handling before installation, ensuring long shelf life.
• Cost-Effective Solution: Offers significant savings compared to purchasing individual bearings separately, while maintaining OEM-grade quality standards.

Technical Specifications

OEM Cross-Reference

This bearing set is designed to replace or correspond with the following OEM part numbers from Cummins:

• Cummins Main Bearing: 3939859
• Cummins Connecting Rod Bearing: 3802070
• Cummins Connecting Rod Bearing (Alt): 4893693

These numbers correspond to standard size (Std) bearings for the ISBE185 engine. Always verify your engine’s specific requirements for size grade (Std, 0.25mm, 0.50mm, etc.) before ordering.

Compatibility

This bearing set is specifically designed for the Cummins ISBE185 diesel engine. Based on this engine platform, it is commonly used for the following applications:

• Excavators
• Forklifts
• Bulldozers
• Buses
• Trucks
• Loaders
• Other heavy equipment utilizing the ISBE185 engine

Note: Fitment may vary by specific equipment model and year. Please verify your engine model and crank journal measurements before purchase.

Global Supply & Distribution

We offer worldwide shipping capabilities to meet the demands of international B2B buyers. Our distribution network covers all major markets including:

• North America: Quick delivery to US and Canadian industrial centers via major ports (Los Angeles, Houston, New York, Vancouver)
• Europe: Efficient shipping to Rotterdam, Hamburg, Antwerp, and other key European logistics hubs
• Asia-Pacific: Direct service to Singapore, Dubai, Jebel Ali, and major Asian industrial zones
• Middle East & Africa: Reliable shipping to Dubai, Jeddah, and African ports with customs documentation support
• South America: Service to Santos, Buenos Aires, and other regional ports

We maintain export experience with customs clearance documentation and can accommodate various shipping terms (FOB, CIF, DDP) based on buyer requirements. Bulk orders can be consolidated for cost-effective logistics.

Quality Assurance

• Manufacturing Standards: Bearings are produced in ISO 9001 certified facilities with strict quality control processes.
• Testing: Each batch undergoes dimensional inspection, hardness testing, and visual inspection before shipment. Machinery Test Report and Video Outgoing Inspection are available upon request.
• Warranty: 6-month warranty against manufacturing defects in materials and workmanship, providing peace of mind for your engine rebuild projects.
• Packaging: Individually wrapped in protective plastic, then boxed and cartoned to prevent damage during transit.

FAQ

Q1: How do I verify these bearings will fit my ISBE185 engine?

First, confirm your engine model is exactly ISBE185 (check engine data plate). These are standard size (Std) bearings. Measure your crankshaft main journal diameter and connecting rod journal diameter against factory specifications (typically 3.503″ for mains and 2.874″ for rods on ISBE185). If your crank has been ground undersize, you will need corresponding undersize bearings (0.25mm, 0.50mm, etc.). Always consult your service manual for specific clearance requirements.

Q2: What is the proper installation procedure for these bearings?

Installation requires cleaning all bearing surfaces and applying clean engine oil to both the bearing back and journal surfaces. Do not mix main and rod bearings. Torque main bearing caps to factory specifications (typically 90-110 ft-lbs for ISBE185) using a calibrated torque wrench. Check bearing clearance with Plastigage or micrometer after torquing. Rotate the crankshaft by hand to ensure smooth rotation without binding. Always replace rod bolts if specified by Cummins service procedures.

Q3: How can I maximize the service life of these bearings?

Use high-quality diesel engine oil meeting Cummins CES 20074 or API CK-4 specifications. Change oil at recommended intervals (typically every 250-500 hours for heavy equipment). Ensure proper oil pressure (40-70 psi at operating temperature for ISBE185). Address any coolant leaks immediately as coolant contamination destroys bearings rapidly. During engine break-in, avoid sustained high RPM operation for the first 50 hours. Monitor oil analysis reports for bearing material (copper, lead, aluminum) as early indicators of wear.