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King Engine Bearings

King MB7009SI SI-Series Main Bearings for 1989-2012 Dodge/RAM Cummins 5.9L & 6.7

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$88.95
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Product Specification:

SKU:KINGMB7009SI

MPN: MB7009SI

UPC: 611500470714

Weight: 2.4 lb

Type: Bearings



Vehicle Fitment

  • 1989-1993 Dodge D250/D350 (Base, Club Cab, Adventurer, Prospector)
  • 1994-2002 Dodge Ram 2500/3500 (Base, Custom, SLT, Laramie, Power Wagon, Sport, ST, SXT)
  • 2003-2012 Dodge/RAM 2500/3500 (Laramie, Laramie Longhorn, Outdoorsman, Power Wagon, SLT, ST, SXT, TRX, TRX4)
  • Engine: Cummins B-Series 5.9L and 6.7L inline-6 (standard bore STD)

Features

  • SI-Series bimetal construction with silicon-aluminum alloy lining
  • Steel backing for enhanced durability and load resistance
  • Standard (STD) size bearings - no crank grinding needed
  • Single-flange upper shells for precise journal positioning
  • Seven main bearing positions (journals 1-7) covered
  • Designed for high-load diesel engine performance
  • Precision-machined for consistent OEM-level clearances
  • Complete drop-in replacement for Cummins OEM MB7009 series
  • Meets or exceeds factory specifications for rebuilds

Specifications

  • Material: bimetal (steel backing + silicon-aluminum alloy lining)
  • Size: Standard (STD) bore for Cummins B-Series engines
  • Shell thickness: approx. 2.466 mm
  • Shell width: approx. 37.44 mm
  • Position: Includes main journals 1-7
  • Upper shell: single-flange design
  • Compatibility: 5.9L & 6.7L B-Series engines from 1989-2012
  • Packaged weight: approx. 1.09 kg

Included Components

  • 7x upper main bearing shells (journals 1-7)
  • 7x lower main bearing shells (journals 1-7)

Product Description

The King MB7009SI SI-Series Main Bearing Set is a precision-engineered, direct OEM replacement designed for Cummins B-Series 5.9L and 6.7L inline-6 diesel engines found in Dodge and RAM trucks from 1989-2012. Featuring high-strength steel backing and a silicon-aluminum alloy lining, these standard-bore bearings deliver exceptional load capacity and long-term reliability, making them ideal for rebuilds, performance upgrades, or high-mileage engines.

Each set includes all seven main bearing positions with single-flange upper shells that ensure precise crankshaft alignment and consistent oil retention. Sized to OEM STD specifications, no crankshaft grinding is required - offering a convenient drop-in solution. The bimetal construction offers superior fatigue resistance ideal for both daily driving and heavy-duty applications.

Installation is straightforward; simply follow Cummins torque specs for main caps and verify proper oil clearance with plasti-gauge (typically 0.02-0.04 mm). This part is emissions-neutral and fully compatible with OEM components, delivering peace of mind to mechanics, fleet managers, and DIY enthusiasts seeking durable and accurate engine rebuilds.

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