Description
5014428X BA-921 CAT AIR BRAKE COMPRESSOR – REMANUFACTURED
PART NUMBER(S):
Fleet Products: 5014428X (Remanufactured), 5014428N (New) | Replaces OE: Bendix: 5012464, 5014236, 5014428, 5014428N, K056647, 5012459, 5014235, 5014427, K048940, K066837, 5012510, 5014180, 5014402, 5014402X, K048939, K066831, 5011441, 5014177, 5014401, K048938, K066811, 801465, 801798, 801826, K056649, 5011441X, 5013058X, 5014401X, 5014427X, K056647X, 5010803, 5010803X, 5010804, 5010805, 5010895, 5014489 | CAT: 223-3636, 253-1736, 255-4160, 20R-0176, 0R-1623, 353-7136, 385-0936, 254-3853, 2N-1287, 20R-0177, 10R-7437, 1R-1808, 353-7135, 385-0935
DESCRIPTION:
Model: Bendix BA-921 CAT Air Brake Compressor with External Oil Return
Vehicles: CAT C11 / C13 ACERT pre-2007 engine platforms with 30° rear flange rotation
• Drive Gear: 42 teeth
• Rear Flange Rotation: 30°
• External Oil Return: Yes
• Air Inlet: Top
• Air Outlet: Side
• Mounting Type: Flange mount
• Drive: Engine driven
• Cooling Method: Water and air cooled
• Cylinders: 1
• Bore × Stroke: 3.622 in × 2.126 in
• Rated Displacement: 15.8 CFM @ 1250 RPM
• Air Flow: 11.6 CFM @ 1800 RPM / 120 PSI; 16.5 CFM @ 3000 RPM / 120 PSI
• Power Requirement: 4.6 HP loaded / 0.8 HP unloaded @ 1800 RPM / 120 PSIG
• Minimum Coolant Flow: 1.5 GPM @ maximum RPM
• Minimum Oil Pressure: 15 PSI
• Minimum Governor Cut-Out Pressure: 120 PSI
• Unloader Line: 3/16 in I.D.
• Temperature Range: 170°F inlet / 400°F discharge
• Inlet Port Fitting: M27 × 2
• Discharge Port Fitting: M22 × 1.5
• Water Port Fitting: M18 × 1.5
• Oil Port: 7/16-16 UNF
• Unloader Port: 1/8-27 NPT
• Compatible ST-4 Safety Valve: 801116, 800534
• Includes: Installation gaskets and O-rings
CROSS-REFERENCE(S):
0R1623, 165-179-9213, 1651799213, 222-2900, 2222900, 2233636, 2531736, 2543853, 2554160, 2N1287, 3537136, 3850936, 5.0144E 006,701175AT, 767653327884, BC1-25555, T-5011432, T5011432, VMX1007105, VMX1010226, 20R0177, 3850935
A cross-reference listing means this part may be a suitable replacement for the listed part numbers. Always verify fitment before installation.
IMPORTANT INSTALLATION NOTES:
✔ Maintain minimum 1.5 GPM coolant flow
✔ Ensure the external oil return line is connected before startup
✔ Verify air, coolant and oil fittings are properly sealed before startup
✔ Drain all air reservoirs before servicing air brake components
✔ Verify all fasteners are torqued to specification before returning vehicle to service
✔ Torque cylinder head fasteners to 265–292 in-lb
✔ Torque governor adapter fasteners to 195–213 in-lb
✔ Torque rear end cover fasteners to 195–213 in-lb
✔ Torque inlet port fitting (M27 × 2) to 991–1089 in-lb
✔ Torque discharge port fitting (M22 × 1.5) to 814–912 in-lb
✔ Torque water port fitting (M18 × 1.5) to 593–637 in-lb
✔ Torque oil port (7/16-16 UNF) to 150–170 in-lb
✔ Tighten unloader port (1/8-27 NPT) 2–3 turns from finger tight
SOLD AS REMANUFACTURED – CORE RETURN REQUIRED
Built to OEM standards — thoroughly cleaned, inspected, and tested to ensure durability, performance, and reliability in demanding applications.
Warranty Information
