C10 3176C Main Bearing (Std) for Caterpillar Engine Parts | Construction & Industrial

Product Details

Product Overview

This Main Bearing (Standard Size) is specifically designed for the Caterpillar C10 and 3176C diesel engines. As a critical component within the engine’s rotating assembly, this main bearing ensures precise crankshaft alignment and reduces friction under high-load conditions. Manufactured to OEM specifications, it provides a direct replacement for worn or damaged bearings in heavy-duty applications.

Commonly used in construction machinery, industrial equipment, agricultural tractors, generator sets, marine engines, and material handling vehicles, this bearing is a cost-effective solution for maintaining engine performance. The standard (Std) sizing indicates it is suitable for engines with crankshaft journals that have not been previously undersized.

Key Features & Benefits

• Precision Fitment: Manufactured to exact OEM tolerances for the Caterpillar C10 and 3176C engine blocks, ensuring proper oil clearance and crankshaft support.
• Durable Construction: Built from high-strength steel with a lead-copper or aluminum alloy overlay, providing excellent wear resistance and fatigue strength under heavy loads.
• Standard Size Ready: This is a standard (Std) bearing, ideal for direct replacement during routine rebuilds without the need for crankshaft grinding.
• Reduced Friction: Advanced surface finish and groove design optimize oil film distribution, reducing friction and heat generation for extended engine life.
• Rigorous Testing: Each batch undergoes dimensional inspection and material verification to confirm it meets or exceeds OEM performance standards.
• Easy Installation: Precisely chamfered edges and correct locating tangs simplify installation, reducing labor time during engine overhaul.

Technical Specifications

OEM Cross-Reference

This main bearing is a direct replacement for the following original Caterpillar part numbers:

• Primary OEM: Caterpillar 1W-8660, 1W-8661
• Alternate Numbers: 9Y-1804, 117-1775, 143-4300
• Note: Always verify your engine serial number and bearing part number before ordering. This listing is for the standard size; undersize options are available separately.

Compatibility

This main bearing is commonly used for the following Caterpillar engine models and applications:

• Engine Models: C10 (S/N prefix: 2YN, 9NS, 1LW), 3176C (S/N prefix: 8LG, 1WM)
• Vehicle/Equipment Applications:
  • Construction: Caterpillar 325, 330, 345 Excavators
  • Industrial: Caterpillar 322, 3306 Generator Sets
  • Agriculture: Caterpillar Challenger Tractors
  • Marine: Caterpillar 3176C Marine Propulsion Engines
  • Handling: Caterpillar TH Series Telehandlers
• Note: Fitment is inferred based on common engine applications. Please confirm with your equipment’s parts manual or engine serial number.

Global Supply & Distribution

We provide worldwide shipping for this Caterpillar C10 main bearing, ensuring fast and reliable delivery to major industrial centers. Our export experience covers North America (USA, Canada, Mexico), Europe (Germany, UK, Netherlands, France), the Middle East (UAE, Saudi Arabia, Qatar), Asia-Pacific (Australia, Singapore, Japan), and South America (Brazil, Chile).

We stock standard quantities for immediate dispatch to ports like Shanghai, Shenzhen, and Guangzhou, with express courier options (DHL, FedEx, UPS) available for urgent orders. Our team handles all international trade documentation, including commercial invoices, packing lists, and certificates of origin, to ensure smooth customs clearance.

Quality Assurance

Every main bearing is manufactured in ISO 9001:2015 certified facilities. We implement strict incoming material inspection, in-process dimensional checks, and final outgoing quality control. A Machinery Test Report and Video Outgoing Inspection are provided with each shipment for transparency.

We offer a 6-month warranty against manufacturing defects. After the warranty period, our online support team remains available to assist with technical questions and replacement part identification. We stand behind the durability and precision of our engine components.

FAQ

Q1: How do I confirm this standard main bearing fits my Caterpillar 3176C engine?
A: First, check your engine’s serial number prefix (e.g., 8LG, 1WM). Then, measure the crankshaft main journal diameter. For standard bearings, the journal should measure exactly 4.7500 inches (120.65 mm) with no wear. If the journal has been ground, you will need an undersize bearing (e.g., 0.010″ or 0.020″). Always cross-reference your old bearing’s part number with our OEM list.

Q2: What is the correct installation procedure for these main bearings?
A: Clean the bearing bore and crankshaft journal thoroughly. Apply clean engine oil to the bearing surface. Install the upper bearing half into the block, ensuring the locating tang seats properly. Install the lower half into the main cap. Torque the main cap bolts to Caterpillar specifications (typically 95-105 ft-lbs for C10/3176C). Always check bearing clearance using Plastigage before final assembly.

Q3: Can I reuse these bearings if I only replace one set?
A: It is strongly recommended to replace all main bearings as a complete set during an engine overhaul. Reusing old bearings can lead to uneven oil clearance and premature failure. If only one bearing is damaged, inspect the crankshaft for scoring and replace all bearings in that journal pair (upper and lower) at minimum. Always prime the oil system before starting the engine.