C6.6 Main Bearing & Connecting Rod Bearing STD 445-9324 317-5482 for Caterpillar Engine Parts

Product Details

Product Overview

This high-quality engine bearing set includes both Main Bearings and Connecting Rod Bearings in Standard (STD) size, specifically designed for the Caterpillar C6.6 diesel engine. The set comprises critical internal engine components that ensure proper crankshaft and connecting rod support, reducing friction and wear for optimal engine performance and longevity.

Manufactured to meet OEM specifications, these bearings (part numbers 445-9324 and 317-5482) are precision-engineered replacements for Caterpillar’s original equipment. They are commonly used in a wide range of heavy machinery and industrial equipment powered by the C6.6 engine, including excavators, forklifts, bulldozers, trucks, loaders, and buses. This bearing set is an essential part for engine overhauls, rebuilds, or preventive maintenance to restore engine tolerances and ensure reliable operation.

Key Features & Benefits

• Precision Engineering: Manufactured to exact OEM dimensions (STD size) for a perfect fit and proper oil clearance, eliminating the need for line boring in standard applications.
• Superior Material Composition: Constructed from high-strength, wear-resistant materials with a specialized overlay that provides excellent conformability and embedability for debris, protecting the crankshaft journal.
• Direct OEM Replacement: Cross-references directly to genuine Caterpillar part numbers 445-9324 and 317-5482, ensuring compatibility with C6.6 engine rebuilds.
• Enhanced Durability: Designed to withstand the high loads and temperatures of turbocharged diesel engines, offering extended service life compared to standard aftermarket bearings.
• Complete Set: Includes both main and connecting rod bearings in one package, simplifying the ordering process for a full engine bearing replacement.
• Rigorous Quality Control: Each bearing undergoes dimensional and visual inspection to guarantee it meets strict manufacturing tolerances for reliable performance.

Technical Specifications

OEM Cross-Reference

This bearing set is a direct aftermarket replacement for the following genuine Caterpillar part numbers:

• Main Bearing: 445-9324
• Connecting Rod Bearing: 317-5482

Note: This product is designed to match OEM specifications. Always verify your engine’s specific requirements and existing part numbers before purchase.

Compatibility

This bearing set is specifically engineered for the Caterpillar C6.6 diesel engine. It is commonly used for maintenance and repair of equipment powered by this engine, including but not limited to:

• Excavators: Caterpillar 312D, 313D, 314D, 315D, 319D
• Forklifts: Various models utilizing C6.6 power
• Loaders: Caterpillar 924H, 930H, 938H
• Bulldozers & Trucks: Select models equipped with the C6.6
• Buses & Industrial Equipment: Generator sets and other machinery using this engine platform

Important: Fitment is application-specific. Please confirm your engine model and serial number to ensure correct part selection.

Global Supply & Distribution

We serve a worldwide network of B2B clients, including engine rebuilders, equipment dealers, and maintenance workshops. Our export capabilities ensure fast and reliable delivery to major industrial centers across the globe:

• North America: Regular shipments to the USA, Canada, and Mexico.
• Europe: Quick delivery to EU countries including Germany, France, the UK, and the Netherlands.
• Asia-Pacific: Strong presence in Australia, New Zealand, Japan, and Southeast Asian markets.
• Middle East & Africa: Reliable service to UAE, Saudi Arabia, South Africa, and Nigeria.
• South America: Capacity to ship to Brazil, Chile, and Argentina.

We partner with major logistics carriers to offer cost-effective sea freight, express air freight, and door-to-door delivery. Our export documentation is fully compliant with international trade standards.

Quality Assurance

Our manufacturing process adheres to strict quality management systems. Each bearing set undergoes the following quality checks:

• Dimensional Inspection: Wall thickness, bore diameter, and width are verified against OEM blueprints.
• Material Analysis: Composition is tested to ensure the correct alloy and hardness for durability.
• Visual Inspection: Each part is checked for surface defects, burrs, or imperfections.
• Warranty: Backed by a 6-month warranty against manufacturing defects in materials and workmanship.
• Outgoing Inspection: A machinery test report and video inspection are available upon request to confirm quality before shipment.

FAQ

Q: How do I confirm these bearings fit my C6.6 engine?
A: Verify the casting numbers on your old bearings or consult your engine’s parts manual. The part numbers 445-9324 (main) and 317-5482 (rod) are direct cross-references for the Caterpillar C6.6. Ensure you are ordering Standard (STD) size if your crankshaft is not ground undersized.

Q: What is the correct installation procedure for these bearings?
A: Installation requires proper engine disassembly and cleaning. Ensure bearing shells and journals are clean and oiled. Use a plastigage to verify oil clearance. Torque main bearing and connecting rod cap bolts to the OEM specification for your specific engine serial number. We recommend installation by a qualified diesel mechanic.

Q: Can I use these bearings in a rebuilt engine with a reground crankshaft?
A: No. These are Standard (STD) size bearings for use with a standard, unground crankshaft. If your crankshaft has been reground to an undersize (e.g., 0.25mm, 0.50mm), you must purchase the corresponding undersize bearing set. Always measure your crankshaft journals before ordering.