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  4. Liner Kit(Piston,Piston ring,Liner)
  • Cummins Excavator Engine Spare Parts QSB5.9 Main Bearing Pair 3929021 - Image 1
  • Cummins Excavator Engine Spare Parts QSB5.9 Main Bearing Pair 3929021 - Image 2
  • Cummins Excavator Engine Spare Parts QSB5.9 Main Bearing Pair 3929021 - Image 3
  • Cummins Excavator Engine Spare Parts QSB5.9 Main Bearing Pair 3929021 - Image 4
Cummins Excavator Engine Spare Parts QSB5.9 Main Bearing Pair 3929021 - Image 1Cummins Excavator Engine Spare Parts QSB5.9 Main Bearing Pair 3929021 - Image 2Cummins Excavator Engine Spare Parts QSB5.9 Main Bearing Pair 3929021 - Image 3Cummins Excavator Engine Spare Parts QSB5.9 Main Bearing Pair 3929021 - Image 4

Cummins Excavator Engine Spare Parts QSB5.9 Main Bearing Pair 3929021

  • Item No.Cummins Excavator Engine Spare Parts QSB5.9 Main B
  • Part Number: QSB5.9 Engine spare parts
  • Machine Model:
  • Condition: Aftermarket New
  • Type: Liner Kit piston ring kit SNAP RING main bearing valve guide Intake valve gasket kit
Cummins Excavator Engine Spare Parts QSB59 Main Bearing Pair 3929021
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Description

Cummins QSB5.9 Main Bearing Pair 3929021

This main bearing pair is designed for the Cummins QSB5.9 engine, commonly used in excavators and other construction machinery. It is an aftermarket new replacement part, manufactured to meet the dimensional and performance requirements of the original component.

Key Specifications

  • Part Number: 3929021
  • Engine Model: QSB5.9
  • Condition: Aftermarket New
  • Type: Main bearing pair

Applications

This bearing pair is suitable for Cummins QSB5.9 engines installed in excavators and other equipment. It provides reliable support for the crankshaft, helping maintain proper oil clearance and smooth rotation under load.

Related Engine Parts

In addition to this main bearing pair, we supply a wide range of engine spare parts for the QSB5.9 and other models, including:

  • Liner kit
  • Piston ring kit
  • Snap ring
  • Main bearing
  • Valve guide
  • Intake valve
  • Gasket kit

About XC Parts

Hangzhou XC Machinery Co., Ltd. is a parts wholesaler based in China, serving the construction equipment industry for over 8 years. We supply excavator hydraulic pumps and parts, engine parts, undercarriage parts, electric parts, seal kits, filters, final drives and gear parts, hydraulic breakers, rock buckets, and scanner diagnosers.

We serve customers worldwide, including the US, Canada, Turkey, Italy, Brazil, Colombia, South Africa, UAE, and India. Our product range covers OEM and genuine parts for South Korean brands such as Daewoo, Doosan, Hyundai, Volvo, and Samsung; Japanese brands like Komatsu, Hitachi, Kobelco, Kato, Isuzu, and Mitsubishi; and Chinese brands such as SDLG, Sany, Zoomlion, and Liugong.

Contact Us

WhatsApp/Phone: +86 136 4581 9133

Skype: robinwanguuu@hotmail.com

Email: Ricardo@xcgparts.com

WeChat: welchanparts_luke

Website: www.xcgparts.com

What is Cummins Excavator Engine Spare Parts QSB5.9 Main Bearing Pair 3929021?

The Cummins QSB5.9 Main Bearing Pair 3929021 is an aftermarket new engine spare part designed for the Cummins QSB5.9 engine. It supports the crankshaft and helps maintain proper oil clearance and smooth rotation under load. This bearing pair is commonly used in excavators and other construction machinery. It is manufactured to meet the dimensional and performance requirements of the original component.

Applications

  • Cummins QSB5.9 engines in excavators
  • Other construction machinery equipped with QSB5.9 engines
  • Crankshaft support and alignment
  • Engine overhaul and rebuild
  • Maintenance and repair of QSB5.9 engines

FAQ

What is the part number of this main bearing pair?

The part number is 3929021.

Which engine model does this main bearing pair fit?

It fits the Cummins QSB5.9 engine.

Is this main bearing pair new or used?

It is aftermarket new.

What is the function of the main bearing pair?

It supports the crankshaft and helps maintain proper oil clearance and smooth rotation under load.

What related engine parts are available?

Related parts include liner kit, piston ring kit, snap ring, main bearing, valve guide, intake valve, and gasket kit.

Product Categories

  • Hydraulic main pump
    • Hydraulic pump assembly
    • Hydraulic pump spare parts
    • Gear pump
    • Pilot pump
  • Engine parts
    • Liner Kit(Piston,Piston ring,Liner)
    • Main connect rod bearing
    • Water pump
    • Alternator
    • Starter
    • Turbocharge
    • Injector
    • Fan Motor
    • Tensioner
    • Cylinder Head
    • Cylinder block
    • Gasket kit
    • Oil Cooler Core
    • Engine Assembly
    • Crankshaft
  • Electric Parts
    • Controller
    • Monitor
    • Wire harness
    • AC panel
    • Throttle motor
    • Throttle Cable
    • Solenoid Valve
    • Relay
    • Pressure sensor
    • Wiper motor
    • Thermostat
    • Relief Valve
    • Lighting lamp
  • Final Drive swing motor
    • Final drive
    • swing motor
  • Travel Gearbox
    • Gearbox assy
    • Gearbox spare parts
  • Seal kit
    • Arm hydraulic cylinder seal kit
    • Boom hydraulic cylinder seal kit
    • Bucket hydraulic cylinder seal kit
    • Hydraulic pump seal kit
    • Swing motor seal kit
    • Travel motor seal kit
    • Main Control valve seal kit
    • Centre joint seal kit
  • Rock hydraulic breaker hammer
    • Silent Breaker hammer
    • Side type breaker hammer
    • Box type Breaker hammer
  • Rock bucket
  • Undercarriage parts
    • Track link
    • Track roller
    • upper roller
    • Idler
    • Sprocket
    • Adjustor assy
    • Track pad shoe
    • Rubber track
  • Swing reducer
  • Air conditioning system
    • Air condition compressor
    • Blower
    • Evaporator
  • Diagnostic Scanner Tool
  • Swing bearing

Links

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