JL-7020458 Engine Main Bearing Set for Komatsu S6D102 & Cummins 6BT5.9 Supplier Replacement

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.

Technical Specification & Dispatch Details

Model NO.Komatsu S6D102 / Cummins 6BT5.9Part NumberJL-7020458 / JL7020458
Product NameMain Bearing Set (Crankshaft Bearings)TypeEngine Internal Components
ConditionBrand New, OEM Standard ReplacementMOQ1 Piece / Set
Stock StatusIn Stock / Fast DispatchPackagingIndustrial Export Packing
ApplicationEngine rebuild, overhaul, maintenancePayment TermsT/T, Western Union, MoneyGram
Delivery MethodsExpress: DHL Fedex EMS UPS or by Air / Sea

Why Choose Our JL-7020458 Replacement Over Others?

Choosing the right supplier for your engine rebuild can prevent costly downtime. Below is a comparison of why procurement managers prefer our parts.

Core FeaturesStandard Market PartsOur JL-7020458 OEM Standard
Material CompositionBasic Aluminum AlloyHigh-strength Tri-metal Structure
Load CapacityStandard durabilityHeavy-duty impact resistance for industrial use
Fitment PrecisionApproximate sizing100 percent match to S6D102 / 6BT5.9 specs
Heat DissipationAverage performanceEnhanced thermal conductivity for high RPM
Inventory StatusOften backorderedReady for immediate global shipping
SupportGeneral retailExpert technical identification assistance

FAQ: Troubleshooting & Maintenance Solutions

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.

Professional Support & Consultation

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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