Looking for a reliable JL-7020458 (also referred to as JL7020458) main bearing set? When your engine undergoes a major overhaul, the precision of your bearings determines the longevity of the crankshaft. Our OEM standard replacement bearings are engineered specifically for Komatsu S6D102 and Cummins 6BT5.9 diesel engines, ensuring optimal oil clearance and friction reduction.
| Model NO. | Komatsu S6D102 / Cummins 6BT5.9 | Part Number | JL-7020458 / JL7020458 |
| Product Name | Main Bearing Set (Crankshaft Bearings) | Type | Engine Internal Components |
| Condition | Brand New, OEM Standard Replacement | MOQ | 1 Piece / Set |
| Stock Status | In Stock / Fast Dispatch | Packaging | Industrial Export Packing |
| Application | Engine rebuild, overhaul, maintenance | Payment Terms | T/T, Western Union, MoneyGram |
| Delivery Methods | Express: DHL Fedex EMS UPS or by Air / Sea | ||
Choosing the right supplier for your engine rebuild can prevent costly downtime. Below is a comparison of why procurement managers prefer our parts.
| Core Features | Standard Market Parts | Our JL-7020458 OEM Standard |
|---|---|---|
| Material Composition | Basic Aluminum Alloy | High-strength Tri-metal Structure |
| Load Capacity | Standard durability | Heavy-duty impact resistance for industrial use |
| Fitment Precision | Approximate sizing | 100 percent match to S6D102 / 6BT5.9 specs |
| Heat Dissipation | Average performance | Enhanced thermal conductivity for high RPM |
| Inventory Status | Often backordered | Ready for immediate global shipping |
| Support | General retail | Expert technical identification assistance |
Q1: Why are my Komatsu S6D102 engine bearings wearing out prematurely?
A: Common causes include contaminated engine oil, improper oil pressure, or misalignment during the last overhaul. Replacing with a JL-7020458 set ensures the correct clearance is restored to protect the crankshaft.
Q2: Can this part fit both Komatsu and Cummins models?
A: Yes, the S6D102 is the Komatsu version of the Cummins 6BT5.9 engine block. The JL7020458 is cross-compatible for these specific engine series used in excavators and generators.
Q3: Why Choose This Main Bearing Set?
A: It features an OEM-standard tri-metal structure and is trusted by repair shops and equipment fleets worldwide for its reliability in harsh construction environments.
Not sure how this issue affects your equipment? Our team helps operators:
Identify potential risks during maintenance
Recommend suitable replacement parts if needed
Support both inspection advice and parts supply
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