Description
281622X - TF-400 CATERPILLAR COMPRESSOR
PART NUMBER(S):
Fleet Products: 281622X (Remanufactured) | OE: 8S894, 281622, 283533, 281624
DESCRIPTION:
Model: TF-400 Pulley Drive Air Brake Compressor
Vehicles: Caterpillar engine applications (various heavy trucks and equipment)
• Cooling: Water cooled
• Mounting: Flange mount
• Air Inlet Port: Right (viewed from rear)
• Air Outlet Port: Right (viewed from rear)
• Discharge Type: Flange
• Number of Cylinders: 2
• Bore Size: 2.0625 in
• Stroke: 1.5 in
• Displacement at 1,250 RPM: 7.25 cu ft/min
• Maximum Recommended RPM: 3,000 (water cooled); 2,400 (air cooled)
• Minimum Coolant Flow at Maximum RPM: 2.5 gal/min
• Required Air Flow: 250 CFM
• Approximate Horsepower at 1,250 RPM: 1.2 HP
• Maximum Inlet Air Temperature: 250°F
• Maximum Discharge Air Temperature: 400°F
• Minimum Pressure Required to Unload: 60 PSI
• Minimum Oil Pressure at Engine Idle: 5 PSI
• Minimum Oil Pressure at Governed Speed: 15 PSI
• Oil Capacity (Self-Lubricated Model): 0.53 qt
• Minimum Discharge Line Size: 1/2 in O.D. tubing or equivalent
• Minimum Coolant Line Size: 3/8 in O.D. tubing or equivalent
• Minimum Oil Supply Line Size: 1/4 in O.D. tubing or equivalent
• Minimum Oil Return Line Size: 1/2 in O.D. tubing or equivalent
• Minimum Air Inlet Line Size: 5/8 in I.D.
Applications: Used in Caterpillar-powered vocational and on-highway vehicles requiring a TF-400 series air compressor. Provides consistent air pressure for brake systems and pneumatic functions. Direct replacement for Caterpillar part 8S894 and compatible equivalents.
CROSS-REFERENCE(S):
281622X, 281622, 8S894, TF400, 283533, 102655, 108202TP, 227401X, BE281622
A cross-reference listing means this part is a suitable replacement for the part numbers listed. Please confirm all ports and dimensions match your application before installing.
IMPORTANT INSTALLATION NOTES:
✔ Port orientation is always viewed from the rear
✔ Flange discharge – torque flange bolts to OEM spec (typically 80–100 ft-lbs)
✔ Water-cooled unit – ensure all cooling lines are flushed and secured
✔ Compatible with Caterpillar pulley systems – verify drive alignment before startup
✔ Mount securely to 4-hole base and confirm no gasket leaks
SOLD AS REMANUFACTURED | CORE RETURN REQUIRED
Built to OEM standards | thoroughly cleaned, inspected, and tested to ensure durability, performance, and reliability in demanding applications.
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Warranty Information
