Core Components for Cummins 6CT8.3 Engines

• ● Oxygen Sensor Heater (P/N: 2645A751-6CT83-O2H)

• ● Fuel Injector Motor (P/N: 3922461-6CT83-FIM)

• ● Relay Assembly (P/N: 4951860-6CT83-REL)

• ● Fuse Box (P/N: 3916302-6CT83-FBX)

• ● Battery System (P/N: 4067915-6CT83-BAT)

• ● Wheel Hub (P/N: 4060703-6CT83-WHL)

• ● Heavy-Duty Tire (P/N: 3524862-6CT83-TIR)

• ● Suspension Kit (P/N: 3638722-6CT83-SUS)

• ● Shock Absorber (P/N: 3408627-6CT83-SHK)

• ● Steering Gear (P/N: 3628963-6CT83-STG)

• ● Steering Column (P/N: 3634690-6CT83-STC)

• ● Steering Wheel (P/N: 3678912-6CT83-STW)

• ● Brake Disc (P/N: 3628605-6CT83-BRD)

• ● Brake Pads (P/N: 3634692-6CT83-BRP)

• ● Brake Cylinder (P/N: 3637969-6CT83-BRC)

Applications & Case Studies

Compatible Models: Cummins QSK60G, QSL9, 6CTA8.3-G2, and industrial variants used in:

• Excavators (e.g., Caterpillar 320D, Komatsu PC200)

• Power Generators (150-500kW diesel gensets)

• Mining Trucks (e.g., CAT 777F)

Case Example: A 150kW Cummins 6CTA8.3-G2 generator in Shenzhen experienced oxygen sensor failure (Code P0030 ), causing 15% fuel efficiency loss. Replacement with OEM sensor restored optimal AFR and saved $1,200/month in diesel costs.

Expert Tips & Solutions

Maintenance Tips

• Clean fuel injectors every 500hrs using ultrasonic cleaning to prevent carbon buildup

• Check battery terminals monthly for corrosion; apply dielectric grease to enhance conductivity

• Rotate tires every 1,000hrs to ensure even wear on construction sites

Troubleshooting Guide

• Engine misfire? Test relays with multimeter; replace if resistance exceeds 5Ω

• Steering wheel vibration? Inspect suspension bushings and replace if cracked

• Brake fluid leak? Check brake cylinders for worn seals and rebuild with kit 3637970

Q&A Section

Q: How to diagnose a faulty oxygen sensor?
       A: Use OBD-II scanner to check for codes P0030-P0037. Measure heater circuit resistance (4-6Ω at 20°C) .

Q: Why does my generator’s fuse box keep blowing?
       A: Usually caused by short circuits in wiring harnesses or overloaded accessories. Inspect with 12V test light .

Q: Best replacement interval for shock absorbers?
       A: Replace every 3,000hrs or if oil leakage/uneven damping is observed .