Description
108866X – TF-550 MACK COMPRESSOR (W/O GEAR)
PART NUMBER(S):
Fleet Products: 108866X (Remanufactured) 108869X (TF-750) | OE: 108864, 108865, 108866, 065387, 108864, 108865, 745X-108866, Mack 745108866, 303GB5114, 745800354, 303GB5114A, 745X108866, Volvo 85102173
DESCRIPTION:
Model: TF-550 Mack Compressor
Vehicles: Mack (CH613, CX613, Granite, Vision, RD688), other heavy-duty truck platforms
• Mounting Type: Flange mount (Mack extended flange, V-Mac step head)
• Cooling: Water and air cooled (water cooled head, air cooled block)
• Operating Pressure: Max 10 bar (145 psi)
• Crankshaft Thread: M20 x 1.5
• Lubrication: Supplied by engine
• Air Inlet Port: Right
• Air Outlet Port: Right/Top
- 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
Applications:
The 108866X TF-550 Mack Compressor is designed for use in heavy-duty trucks with Mack engines and other related vehicle platforms. It is an engine-driven air brake compressor with a V-Mac Step Head configuration and offers both right and top discharge options. This compressor delivers a displacement of 13.2 CFM at 1250 RPM, making it ideal for air brake systems in long-haul trucking, vocational fleets, and commercial vehicles.
CROSS-REFERENCE(S):
108864, 108865, 108866, 745X-108866, 04625108866X, 5002984, BX5004614, 1694005C92, 4015690, 4015691, 4015692, 4015693, TF550, 4015690, 4015690X, 108866X, 745X-108866, PP108866X, V108866X, ST108866X, TRW108866X, EU108866X, D108866X, H108866X, SH108866X, TMK108866X, SKF108866X, NTP108866X, FP108866X, TP108866X, FIP108866X, MHC108866X, AT108866X, RTC108866X, PHD108866X, HDATP108866X, VIPAR108866X, A108866X, E108866X, MPX108866X, BX4015690, WABCO-TF550, PI108866X, SL108866X
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:
- 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.
WHY CHOOSE FLEET PRODUCTS | KBR - HEAVY DUTY TRUCK & TRAILER PARTS?
• Canadian-owned since 1985
• Trusted by fleets, mechanics, and B2B partners across North America
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Warranty Information
