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1981 International Harvester S2125 1981 Base U/K

Repair services & inexpensive new parts for 1981 International Harvester S2125 1981 Base U/K with 7.6L 466Cu. In. l6 DIESEL Turbocharged engine.

The 1981 International Harvester S2125 is a robust commercial vehicle known for its durability and the powerful 7.6L 466 cubic inch inline-6 diesel turbocharged engine. Primarily used for heavy-duty tasks, this model's diesel engine provides significant torque and fuel efficiency, making it suitable for hauling and long-distance driving. Despite its age, the S2125 remains a reliable option in the used commercial vehicle market, particularly valued for its straightforward engineering and ease of maintenance. 1981 International Harvester S2125 Overview

Common Issues

  • Fuel system leaks due to aged lines and seals.
  • Wear and tear on the turbocharger, affecting performance.
  • Electrical system issues, such as faulty wiring or connections.
  • Corrosion on the body and frame, especially in older models.

Maintenance Tips

  • Regularly inspect and replace fuel lines and seals to prevent leaks.
  • Check the turbocharger for any signs of wear and ensure it is functioning properly.
  • Inspect the electrical system for any signs of wear or damage and repair as needed.
  • Perform regular rust prevention treatments to maintain the integrity of the body and frame.

Typical Repair/Ownership Cost Ranges

  • Annual maintenance: $500 - $1,200
  • Turbocharger replacement: $1,000 - $2,500
  • Fuel system repairs: $200 - $800
  • Electrical repairs: $100 - $600

Buying Advice

  • Inspect the condition of the turbocharger and look for any signs of oil leaks or excessive wear.
  • Check the fuel system for leaks or damaged components.
  • Examine the vehicle’s electrical system and ensure all connections are solid and corrosion-free.
  • Look for signs of rust or corrosion on the body and frame, particularly in areas exposed to moisture.

Frequently Asked Questions

  • What is the fuel economy of the 1981 International Harvester S2125? The exact fuel economy can vary, but expect around 8-12 miles per gallon given its diesel engine and turbocharged configuration.
  • Is the 1981 S2125 suitable for long-haul trips? Yes, its diesel engine is designed for durability and efficiency in long-distance driving.
  • How often should I service the turbocharger? Inspect the turbocharger every 20,000 miles and service it as needed to maintain optimal performance.
  • Are parts readily available for this model? While some parts may be harder to find due to the vehicle's age, specialized suppliers and online resources can provide most components.
  • What should I check before buying this vehicle? Focus on the engine's condition, turbocharger efficiency, fuel system integrity, and any signs of rust or electrical issues.

Have Questions about International Harvester S2125 1981 Base? Ask the assistant for questions about mileage, performance, repairs, parts, recommended maintenance and more.


Make: International Harvester
Model: S2125
Trim: Base
Year: 1981

Quick Info

Fuel: DIESEL
Aspiration: Turbocharged
Engine Displacement: 7.6L
Engine CC: N/A
Engine CID: 466
Engine Block Type: L
Cylinder Type: U/K
Cylinders: 6
Drive: U/K
Body Type: U/K
Doors: U/K

Repair services & inexpensive new parts for 1981 International Harvester S2125 1981 Base U/K with 7.6L 466Cu. In. l6 DIESEL Turbocharged engine.