Description
109451X - TF-550 CAT COMPRESSOR (CATERPILLAR ENGINES)
PART NUMBER(S):
Fleet Products: 109451X (Remanufactured) | OE: 109450, 065542 | GMC 15987055, 109451, 5011016, 5007911, 5009283, 5011016X, 5001940 | GMC 15987055 | JOHN DEERE RE506359, RE66033 | CAT 126-8214, 149-4915, 0R8252, 0R9756
DESCRIPTION:
Model: TF-550 CAT Air Brake Compressor
Vehicles: Caterpillar engines – 3116, 3126, 3176, 3406
• Cooling: Water/Air
• Drive Type: Gear-driven (11-tooth spline shaft)
• Mounting: Flange mount (31.5° angle)
• Air Inlet: Top
• Air Outlet: Top
• Cylinders: 2
• Bore x Stroke: 2.78 in x 1.50 in
• Displ @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)
• Max Inlet Temp: 250°F
• Max Discharge Temp: 400°F
Port Sizes (NPT)
• Air Inlet Port Size: 3/4"-16 UNF
• Air Outlet Port Size: 7/8"-14 UNF
• Unloader Port: 1/8" NPTF
• Water Port Size: 1/2" NPTF
• 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:
What’s this used on✔ Caterpillar-powered trucks like those using 3116, 3126, or 3176 engines. This is a go-to flange-mount replacement for TF-550-style compressors where top port configuration is required.
CROSS-REFERENCE(S):
109451, 5011016, 5001940, 5004118X, 109450, 15987055, H109451X, BX109451X, 745-109451X, BW109451X, R955109451X, 5011016X
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
• Fast, Reliable Shipping Across North America
• Competitive pricing with Core Return Refunds
• Price Match Guarantee | Find a better price? We'll beat the difference by 10%!
Warranty Information
