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Part Number: 580 (AC Type 580 / GM 1521580)
Type: Mechanical Fuel Pump (Single Action / Glass Bowl Type)
OEM Reference: International 26585-HA, GM 1521580
Note: While this pump shares the "580" type number with the popular 1946-48 Ford Flathead pump (GM 1523580), this specific version (GM 1521580) is configured with the specific rocker arm and pressure settings for early 1930s International Harvester FBB Series 6-cylinder truck engines.
fits
| Make | Model | Year | Engine | Special Notes |
| International Harvester | A-4 Truck | 1932-1935 | 6-Cyl FBB | 2-Ton to 3-Ton |
| International Harvester | A-5 Truck | 1932-1935 | 6-Cyl FBB | 2-Ton to 3-Ton |
| International Harvester | A-6 Truck | 1932-1935 | 6-Cyl FBB | 2-Ton to 3-Ton |
| International Harvester | C-50 Truck | 1934-1936 | 6-Cyl FBB | 3-Ton to 4-Ton |
| International Harvester | C-55 Truck | 1934-1936 | 6-Cyl FBB | 3-Ton to 4-Ton |
| International Harvester | C-60 Truck | 1934-1936 | 6-Cyl FBB | 3-Ton to 4-Ton |
May fit other vehicles
1934 1935 1936
All our pumps are proudly Made in the USA!
If the unit is a rebuilt pump, please note it was professionally reconditioned by a U.S. rebuilder near Denver, CO, between the late 1980s and early 1990s.
Regarding Photos: Due to our volume of identical, interchangeable inventory, we use representative stock photos for this model. The image is for reference only and may depict a specific manufacturer (e.g., 'AC'). You will receive a pump that meets all listed specifications, which may be from the manufacturer shown or a fully equivalent alternative.
