Description
5014428N – NEW Yumak BA-921 CAT COMPRESSOR (EXTERNAL LINE) ACERT Engines (Pre-2007)
PART NUMBER(S):
Fleet Products: 5014428N (New) 5014428X (Reman) | OE: CAT: 0R-1623, 0R-1624, 10R-1437, 191-6521, 223-3636, 255-4160, 20R-0176, 20R-0177, 353-7135, 385-0935, 385-0936 | BENDIX: 5010803, 5010806, 5011427, 5011441, 5012532, 5014428, 5014482
DESCRIPTION:
Air Inlet: Top
Air Outlet: Side
Mounting Type: Flange mount Rear Flange Rotation - 30°
Drive: Engine Driven
Cooling Method: Water and Air Cooled
External Oil Line: Yes
Application: Caterpillar C13, C15, C18 engines
- Cylinders: 1
- Bore x Stroke: 3.622 in x 2.126 in
- Displacement @1250 RPM: 15.8 CFM
- Flow @1800 RPM /120 PSI: 11.6 CFM
- Flow @3000 RPM /120 PSI: 16.5 CFM
- HP @1800 RPM /120 PSIG: 4.6 HP (loaded) / 0.8 HP (unloaded)
- Min Coolant Flow @Max RPM: 1.5 gpm
- Oil Pressure (min): 15 PSI
- Governor Cut-Out (min): 120 PSI
- Unloader Line: 3/16 in ID
- Temp Range: 170°F inlet / 400°F discharge
-
Port Sizes & Required Torque
- Cylinder Head (M8): 265–292 in-lb
- Governor Adapter (M8): 195–213 in-lb
- Rear End Cover (M10): 195–213 in-lb
- Inlet Port Fitting (M27x2): 991–1089 in-lb
- Discharge Port Fitting (M22x1.5): 814–912 in-lb
- Water Port Fitting (M18x1.5): 593–637 in-lb
- Oil Port (7/16-16 UNF): 150–170 in-lb
- Unloader Port (1/8-27 NPT): 2–3 turns from finger tight
- CAT ST-4 Discharge Safety Valve (7/8"-14 thrd) 801116
- DDC ST-4 Discharge Safety Valve (M16-1.5 thrd) 800534
- Include installation gaskets and orings.
The 5014428N BA-921 CAT COMPRESSOR is designed for use in Caterpillar C13, C15, and C18 engines, commonly found in heavy-duty trucks and equipment. It provides reliable air for the actuation of air brakes. Sold new, with no core return required, this compressor is built to meet or exceed OEM standards for performance and durability.
CROSS-REFERENCE(S):
5014428X, 0R-1623, 0R1623, 385-0936, 5011441, 5014401, 5014402, 5014427, 801826, K056647, BXR107506, BXR107506X, BXX107506X, CC107506, E-BN107506X, EBN107506X, EL13040, EL13040X, EUEBN107506X, F5012533X, FLTBC106, FRL 42018134, FRL 42032285, HVG107506X, HVG5012533X, HVG5014428X, K020283, K020284, K020284X, K046146, K056647, K056647BXR, K056647X, K056649, MB107506X, MI107506X, MSBX107506X, N13AC, OR107506, OR1624, P107506, R107000, R107506, R107506X, R107974, R108583, R955107506X, R9555012533X, R9555014428X, R955EL13040X, R955K056647X, S13753, WBW-107506X, WBW107506X, ZZ107506X
A cross-reference listing means this part is a suitable replacement for the part numbers listed. Please verify all specifications match your application before installation.
IMPORTANT INSTALLATION NOTES:
- Maintain minimum 1.5 gpm coolant flow.
- Ensure external oil supply line is connected for single piston CAT applications.
- Verify air and coolant fittings are properly sealed before startup.
- Drain air reservoirs before servicing air brake components.
- Verify all fasteners are torqued to specification before returning vehicle to service.
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Warranty Information
Reviews
1 Review
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Solid new BA921 compressor for my CAT C15
“I put this 5014428N BA-921 compressor on my C15 after the old one started getting lazy and building air slow. Install was straightforward – flange lined up right, ports were where they should be, and all the gaskets and o-rings were there so I wasn’t chasing extras.
