Product Overview

This premium main bearing and connecting rod bearing set is engineered for the Liebherr 4FE1 diesel engine. Designed as a precise 0.25mm undersize kit, it is the critical solution for engine rebuilds and overhauls requiring crankshaft regrinding. We supply this high-quality component set to a global B2B clientele, including distributors, heavy equipment repair shops, and industrial service centers across North America, Europe, the Middle East, and Asia-Pacific.

Key Features & Benefits

• Precision Engineering: Manufactured to exact OEM specifications and tolerances for a perfect fit and optimal oil clearance.
• Enhanced Durability: Made from high-grade materials with advanced overlay technology for superior wear resistance and fatigue strength under heavy loads.
• Optimal Performance: Ensures proper oil film retention, reduces friction, and maintains engine efficiency, contributing to lower operating temperatures and extended engine life.
• Complete Rebuild Kit: Includes all necessary main and rod bearings for a full 4FE1 engine overhaul, saving time on sourcing individual components.
• Undersize Precision: The 0.25mm undersize is essential for professionally reconditioning engines where the crankshaft journals have been machined to restore surface integrity.

Technical Specifications

OEM Cross-Reference

This bearing set corresponds directly to the following OEM part numbers:

• Liebherr: M172A, R172A

Note: Always verify the undersize specification (0.25mm) against your engine’s rebuild requirements and crankshaft journal measurements.

Compatibility

This bearing set is specifically designed for the Liebherr 4FE1 diesel engine. This engine platform is commonly found in a wide range of heavy-duty applications, including:

• Construction Machinery: Excavators, wheel loaders, bulldozers.
• Industrial Power Units: Generators (Gensets), pumps, compressors.
• Marine Applications: Auxiliary engines for vessels.
• Agricultural and Material Handling Equipment.

Global Supply & Distribution

We are a leading supplier of critical engine components with extensive experience in international logistics and trade compliance. Our global supply chain ensures reliable delivery to major industrial hubs worldwide.

• Worldwide Shipping: We export via air and sea freight to all major markets, including North America (USA, Canada), the European Union, the United Kingdom, Australia, the Middle East (UAE, Saudi Arabia), and Southeast Asia.
• Fast Delivery Network: Consolidated shipments to key ports like Los Angeles, Rotterdam, Hamburg, Singapore, and Jebel Ali enable efficient distribution to your facility.
• B2B Expertise: We specialize in bulk orders and provide all necessary commercial invoices, packing lists, and certificates for smooth customs clearance.

Quality Assurance

Every bearing set is produced under strict quality control protocols to meet or exceed original equipment performance standards.

• Manufacturing Standards: Components are manufactured using certified processes with precise dimensional and material controls.
• Rigorous Testing: Each batch undergoes thorough inspection, including dimensional checks and surface finish analysis. A machinery test report and video outgoing-inspection are available to verify quality.
• Warranty Backed: All parts are covered by a 6-month warranty against manufacturing defects, providing confidence in your purchase.

FAQ

Q1: How do I know if I need the 0.25mm undersize bearings?
A1: The 0.25mm undersize is required when the engine’s crankshaft journals have been professionally reground or machined to this specific undersize dimension to remove scoring or wear. Always measure the finished crankshaft journals or consult your machine shop’s specifications before ordering.

Q2: Is this a complete set for the entire 4FE1 engine?
A2: Yes, this set includes both the main bearings (which support the crankshaft in the engine block) and the connecting rod bearings (which connect the rods to the crankshaft) necessary for a complete bottom-end rebuild of a Liebherr 4FE1 engine.

Q3: What installation precautions should be taken?
A3> Ensure the engine block, crankshaft, and connecting rods are meticulously cleaned. Verify all oil passages are clear. Use proper lubrication (assembly lube or clean engine oil) on bearing surfaces during installation. Always torque bolts to the manufacturer’s specified sequence and values using a calibrated torque wrench. Proper installation is critical for bearing life and engine performance.

Our advantages

1.An authorized wholesaler of Isuzu genuine parts, Hino genuine parts, Mitsubishi genuine parts and Mahle parts.

2. We are not only supply genuine parts, but also high quality OEM parts, which are made in China or made in Japan.

3. More than 10 years of experience in machinery parts, professional supply of diesel engine parts.

4. Fast delivery, the fastest can be shipped in one day ,more than 500,000 of different types parts in stock.

5. Scientific ERP system, easy and fast to locate the parts that customer needs.

6. Professional technician checks the parts before delivery, to make sure the parts are correct, usable and defect-free.

Exhibition

Packing&Shipping

1.  Our shipment is by air/sea/express (DHL/FEDEX/TNT/UPS/EMS).

2.  Once we get confirmation of payment, we will ship products in 2 days.

3.  Our packaging is standard export wooden box or others as your requirement.

4. We’ll check and test the products before shipping , and givethe pictures to our customers to confirm.

FAQ

Q1. What is your company major products?

A: Our main products are Liner kit, Piston, Rings, Liner, Gasket kit, Bearing, Injection pump, Nozzle, Water pump, Oil pump,Crankshaft, Turbocharger,Filter, etc.

Q2.What is the MOQ?

A: Normally we can supply any quantity if we have in stock.

Q3. What is your payment term ?

A: We accept Western Union, T/T, Paypal.

Q4. What is the packing ?

A: Carton or wooden case , If you want to put your logo on the packing , We will do it after get your authorization letter.

Q5. When can you deliver products after payment ?

A: By Express ,usually might take 3-4 days ;By Air , Usually take 7-9 days ; By Sea ,usually take 1-2 months .

Q6. What can you do to complete order perfectly ?

A: In the beginning , We will communicate with clients in details to understand what they need .

Before packing , We will check the products and send photos to clients .After confirmation ,

We will packing products well to avoid damage . Once we get tracking number ,

We will send it to customer and keep contact in with clients .