Description
108804X - TF-550 CUMMINS ISB & C AIR BRAKE COMPRESSOR
PART NUMBER(S):
Fleet Products: 108804X (Reman)
OE: Ford F3HT2875FA, F3HT2875FB, F3HT2875FC, Freightliner F3HT2875FC, Mack 745X108804, Thomas Built 61130294, Volvo 85102167, 109013, 109212, 065376, (5012665X- PREMIUM CRANK), LONG CRANK - NORMALLY BRAKES 108804X
DESCRIPTION:
Model: TF-550
Vehicles: Cummins ISB & C Engine Applications
• Mounting Style: Flange Mount
• Drive: Engine Drive
• Cooling Method: Water-Cooled
• Air Inlet Location: Top
• Air Outlet Location: Optional Top or Left
- Cylinders: 2
- Bore x Stroke: 2.78 in x 1.50 in
- Flow @1250 RPM: 13.2 CFM
- Max RPM: 3000
- HP @1250 RPM /120 PSIG: 2.5 HP
- Min Coolant Flow @Max RPM: 2.5 gpm
- Min Unload Pressure: 60 PSIG
- Oil Pressure: 15 PSIG (idle & governed)
- Temp Range: 250°F inlet / 400°F discharge
Port Sizes (NPT)
- Water In / Out: 1/2-14
- Air Discharge: 1/2-14
- Governor: 1/8-27
- Oil Inlet: 1/8-27
- Oil Return (base): 1/2-14
Minimum Line Sizes
- Discharge: 1/2 in ID
- Coolant: 3/8 in ID
- Oil Supply: 3/16 in ID
- Oil Return: 1/2 in ID
- Air Inlet: 5/8 in ID
- Unloader: 3/16 in ID
• Spline Adapter: 11 Tooth
• Supplied With: Gasket installation kit
Applications:
Engineered for heavy-duty commercial trucks, buses, and tractor applications utilizing Cummins ISB & C engines. This TF-550 air compressor delivers OEM-grade air delivery, durability, and installation readiness. Built to rigorous standards for Cummins diesel platforms operating in demanding brake system environments. Supplied with gasket kit and 11-tooth spline adapter. Remanufactured to factory tolerances.
CROSS-REFERENCE(S):
108804, TF550, BNE108804, BR108804, BW108804, 065376, 109013, 109212
A cross-reference listing means this part should be a suitable replacement for the part numbers listed. Please confirm all dimensions match your application before installing.
IMPORTANT INSTALLATION NOTES:
- Maintain minimum 2.5 gpm coolant flow.
- Do not exceed 3000 RPM.
- Use properly sized discharge line with downward slope.
- Ensure oil supply/return lines are unrestricted before startup.
- Drain all air reservoirs before service.
Suggested torque
- Cylinder Head: 440–500 in-lb
- Inlet / Discharge Fittings: 175–225 in-lb
- Pipe Plugs: 35–270 in-lb (size dependent)
- Crankshaft Nut (Castle): 1200–1440 in-lb (100–120 ft-lb)
- Crankshaft Nut (Metric): 2640–3048 in-lb (220–254 ft-lb)
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
