C7 Main Bearing & Con Rod Bearings 1077708 2246638 Mahle for Caterpillar 3114 3126 Engine

Product Details

Product Overview

This premium bearing set includes both main bearings and connecting rod bearings, designed for precision fitment in Caterpillar 3114 and 3126 diesel engines. Manufactured by MAHLE, a globally recognized leader in engine component technology, these bearings provide the durability and load-bearing capacity required for heavy-duty machinery applications. The set includes critical OEM cross-reference numbers 1077708 and 2246638, ensuring accurate part identification for rebuilders and fleet maintenance professionals.

Ideal for use in Caterpillar C7 engine platforms, these bearings are suitable for a wide range of construction, agricultural, and industrial equipment. With strict dimensional tolerances and high-quality materials, this bearing set delivers reliable engine performance and extended service life in demanding operating conditions.

Key Features & Benefits

• OEM-Grade Fitment: Manufactured to match original Caterpillar specifications for 3114 and 3126 engines, ensuring proper clearance and oil film retention.
• MAHLE Quality Construction: Produced by one of the world’s leading engine component manufacturers, known for rigorous quality control and material science expertise.
• Complete Bearing Set: Includes both main bearings and connecting rod bearings in one convenient package, simplifying parts procurement for engine overhaul projects.
• Verified Part Numbers: Cross-referenced against OEM numbers 1077708, 2246638, and 7C6977 for accurate identification and compatibility verification.
• Enhanced Durability: Designed to withstand high cylinder pressures and thermal loads common in turbocharged diesel engine applications.
• Ready-to-Install: Supplied in protective MAHLE packaging with proper anti-corrosion treatment for immediate installation upon receipt.

Technical Specifications

OEM Cross-Reference

This bearing set directly replaces the following OEM and aftermarket part numbers:

• Caterpillar OEM: 1077708, 2246638, 7C6977
• MAHLE Reference: Compatible with MAHLE bearing specifications for 3114/3126 engines

Note: Always verify your engine’s specific bearing size requirements before installation, as some engine variants may require undersized or oversized bearings based on crankshaft condition.

Compatibility

This bearing set is commonly used for the following engine applications:

• Engine Models: Caterpillar 3114, Caterpillar 3126, Caterpillar C7
• Equipment Types: Excavators, wheel loaders, bulldozers, generator sets, and industrial machinery powered by these engines
• Vehicle Applications: On-highway trucks and buses equipped with Caterpillar 3126 or C7 engines

Compatibility may vary based on specific engine serial number ranges and configuration. We recommend consulting your engine’s parts manual for confirmation.

Global Supply & Distribution

We offer worldwide shipping with reliable logistics partners to ensure fast delivery to major industrial centers across North America, Europe, Asia-Pacific, the Middle East, and Africa. Our Shanghai-based warehouse maintains substantial inventory levels to support both urgent repair needs and planned maintenance programs.

With extensive experience in international trade, we provide professional export documentation, including commercial invoices, packing lists, and certificates of origin. We serve a global network of machinery dealers, fleet operators, and engine rebuilders who depend on consistent quality and timely delivery of critical engine components.

Quality Assurance

All MAHLE bearings are manufactured in ISO/TS 16949 certified facilities, adhering to stringent automotive and heavy-duty engine standards. Each bearing undergoes dimensional inspection and material composition testing to ensure compliance with OEM specifications.

This product comes with a 3-month warranty against manufacturing defects. Our after-warranty service includes online technical support to assist with installation guidance and troubleshooting. While machinery test reports and video inspection are not available for this individual item, batch quality certificates can be provided upon request.

FAQ

Q: Will these bearings fit my Caterpillar 3126B engine?
A: These bearings are designed for the Caterpillar 3114 and 3126 engine families, including most 3126B variants. However, we recommend checking your engine’s serial number against Caterpillar’s parts system to confirm bearing size compatibility, as some later 3126B engines may use different bearing specifications.

Q: What is the proper installation procedure for these bearings?
A: Installation requires careful cleaning of bearing surfaces, proper lubrication with assembly oil, and torqueing main bearing caps to manufacturer specifications. Always use a plastigage to verify oil clearance during assembly. We recommend consulting the Caterpillar service manual for your specific engine model for torque values and procedures.

Q: Do I need to replace the thrust washers separately?
A: This set includes main and connecting rod bearings only. Thrust washers for the crankshaft end-play control are typically sold separately. Please check your engine’s parts list to determine if thrust washers are required for your specific rebuild project.