International Harvester (IH) & Vintage Tractor Parts

Published: July 15, 2026  |  By FP Smith Parts & Equipment

One of the largest physical inventories of International Harvester surplus and vintage tractor parts — still supporting machines that are actively working today.

International Harvester built some of the most durable and respected construction and agricultural machines of the 20th century. Many of those machines — especially the TD-series crawlers — are still working hard today on farms, construction sites, and restoration projects across North America. At FP Smith Parts & Equipment, we have spent decades preserving access to the parts that keep these machines running.

With 79 years of family-owned expertise since 1947, we maintain one of the largest physical inventories of International Harvester (IH) surplus and vintage tractor parts on the West Coast. Our stock comes from extensive acquisitions of factory and dealer inventories during the 1970s, 1980s, and 1990s — inventory that is still available today because we physically stock it at our 20-acre facility in Fairfield, California.

Why IH Parts Are Still in Demand

Many International Harvester crawlers and tractors were overbuilt for their time. Operators value their simplicity, strength, and the fact that they can often be maintained and repaired with basic tools. The challenge has always been finding quality parts for models that have been out of production for decades.

FP Smith solved that problem by acquiring and retaining large quantities of genuine OEM surplus and quality used components. We specialize in the parts that are still needed every day — undercarriage, engine rebuild kits, final drives, hydraulics, and more.

Popular IH Models We Support

Our inventory is especially strong for the classic TD-series crawlers:

• TD6, TD9, TD14, TD14A
• TD15, TD15B, TD15C, TD15E
• TD18, TD18A
• TD20, TD20B, TD20E
• TD24 and related models

We also support related International Harvester loaders, agricultural tractors, and components that carry over into Case IH equipment.

Key IH & Vintage Tractor Parts Categories

Undercarriage Components

Track chains, track shoes, rollers, idlers, sprockets, track adjusters, pins, bushings, and complete undercarriage kits for TD-series machines.

Engine & Powertrain

Rebuild kits, main and rod bearings, gasket sets, crankshafts, cylinder heads, valves, sleeve and piston assemblies, rings, and related components. Strong support for popular IH diesel engines still in service.

Final Drive & Transmission

Bull gears, pinion shafts, final drive assemblies, steering clutches, and transmission parts.

Hydraulics & Controls

Pumps, valves, cylinders, seal kits, and control components.

Cooling & Accessory Systems

Radiators, water pumps, oil coolers, starters, generators, and related hardware.

Vintage Tractor Support

In addition to construction crawlers, we stock parts for many older International Harvester agricultural tractors that are still in use or being restored by enthusiasts and collectors.

The FP Smith Advantage for IH Owners

• Physical inventory — Millions of parts stocked on-site, not brokered
• Genuine surplus heritage — Large quantities acquired directly from IH factory and dealer closures
• 79 years of continuous expertise — Deep knowledge of interchanges and applications
• Cost-effective options — New OEM surplus, quality used, and reconditioned parts
• Rebuild support — In-house capability for engines, transmissions, and hydraulic components
• Same-day shipping — Available on most orders placed before 3 PM PST
• Worldwide shipping — Regular export support for customers outside the United States

Many of the parts we supply for International Harvester equipment are still in active use today — a testament to the original engineering and to the value of maintaining a real physical inventory.

Supporting Both Working Machines and Restorations

Whether you are keeping a TD15C or TD20 running on a daily job site or restoring a classic IH tractor for show or light work, we can help. Our team regularly assists:

• Working contractors and fleet operators
• Independent repair shops
• Farmers and ranchers
• Tractor restoration enthusiasts
• Collectors seeking authentic components

Same-day shipping on most orders placed before 3 PM PST. Expert help available Monday–Friday.