109451X | TF-550 CAT Compressor (3116, 3126, C7/C9 Acert)

109451X - TF-550 CAT COMPRESSOR (CATERPILLAR ENGINES)

PART NUMBER(S):
Fleet Products: 109451X (Remanufactured) | OE: 109451, 5011016, 5001940

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
• 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
• Cylinder Count: 2
• Bore: 2.75" (70 mm)
• Stroke: 1.50" (38 mm)
• Displacement: 13.2 CFM @ 1,250 RPM
• Max RPM: 3,000
• Approximate Weight: 60 lbs

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):

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 viewed from the rear – verify before installation
✔ Gear drive: 11-tooth spline; confirm shaft match with drive gear
✔ Flange nut torque: 80–100 ft-lbs; mounting bolts: 175–225 in-lbs
✔ Core return required if purchasing as a remanufactured unit

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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