Product Overview

This premium bearing set is engineered for Cummins QSF2.8 and ISF2.8 series diesel engines, providing critical support for the crankshaft and connecting rods. As a trusted global supplier, we ship directly from our manufacturing hub in Guangdong, China, to major markets worldwide, including North America, Europe, the Middle East, and the Asia-Pacific region. This product is essential for engine rebuilds, overhauls, and maintenance across diverse industrial applications.

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 designed to withstand the high loads and pressures within a diesel engine, ensuring long service life.
• Optimal Performance: Ensures smooth crankshaft rotation, reduces friction, and maintains proper oil pressure for reliable engine operation.
• Comprehensive Set: Includes main crankshaft bearings and connecting rod bearings for a complete overhaul solution.
• Rigorous Quality Control: Each component undergoes thorough inspection and testing, supported by machinery test reports and video outgoing-inspection.

Technical Specifications

OEM Cross-Reference

This bearing set directly replaces the following genuine Cummins part numbers. It is also compatible with equivalent aftermarket numbers from major suppliers.

• Cummins: 4996250, 4946030, 4946031

Note: Always verify part numbers against your engine’s specific serial number or service manual for absolute compatibility.

Compatibility

This bearing set is designed for use in Cummins QSF2.8 and ISF2.8 diesel engines. These engines are commonly found in a wide range of equipment, including:

• Construction Machinery: Excavators, loaders, compactors.
• Industrial Power Units: Generators (Gensets), pumps, compressors.
• Agricultural Equipment: Tractors, harvesters, irrigation systems.
• Marine Applications: Auxiliary engines for small vessels and workboats.
• Material Handling: Forklifts and terminal tractors.

Global Supply & Distribution

We specialize in the international export of high-quality engine components. Our logistics network ensures efficient delivery to key industrial and port cities globally.

• Worldwide Shipping: We export to North America (USA, Canada, Mexico), Europe (UK, Germany, Netherlands, Poland), the Middle East (UAE, Saudi Arabia), Asia-Pacific (Australia, Singapore, Japan), and South America.
• Fast Delivery: Consolidated sea freight and air freight options are available for major hubs like Los Angeles, Rotterdam, Dubai, and Sydney.
• Export Expertise: All documentation, including commercial invoices, packing lists, and certificates of origin, is provided for smooth customs clearance in compliance with international trade regulations.

Quality Assurance

Our commitment to quality ensures you receive reliable parts that meet performance expectations.

• Manufacturing Standards: Components are produced using precision machinery and processes that adhere to strict quality protocols.
• Warranty: Backed by a 6-month warranty against manufacturing defects.
• Testing & Inspection: Every batch is subject to dimensional checks and visual inspections. A machinery test report is available upon request, and our production process includes video outgoing-inspection for added transparency.
• OEM Service: We offer OEM manufacturing services, capable of producing parts to customer-provided drawings and specifications.

FAQ

Q1: How do I confirm these bearings will fit my specific Cummins QSF2.8 engine?
A1: The most reliable method is to cross-reference the part numbers (4996250, 4946030, 4946031) with your engine’s service parts manual or by using your engine’s serial number (ESN) in an official Cummins database or with your local distributor. Always measure your crankshaft journals for wear before installation.

Q2: What is included in a standard “bearing set” for this application?
A2: This product listing covers both the main crankshaft bearings and the connecting rod bearings required for a complete engine bottom-end rebuild. Please confirm the exact contents (quantity of each bearing type) with our sales team prior to ordering to ensure you receive all necessary components.

Q3: Are there any special installation procedures for these bearings?
A3: Yes. Proper installation is critical. Always clean all oil passages and mating surfaces thoroughly. Use a plastigage or precise micrometers to verify bearing clearances as specified in the engine service manual. Ensure the bearing shells are correctly seated and that the oil holes align. Torque bolts to the manufacturer’s specification in the correct sequence using a calibrated torque wrench.

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 .