Description
5018653X BA-921 DETROIT AIR BRAKE COMPRESSOR 6 BOLT HEAD REAR DISCHARGE REMANUFACTURED
PART NUMBER(S):
Fleet Products: 5018653X (Remanufactured), Replaceable with 5018485X (6 Bolt Head Alternative) | Replaces OE: Bendix: 5018652, 5018653, 5018654, 5018655, 5018769, 802789 | Detroit Diesel: 23536774, R23536774 | Mack: 745-5018653X, 7455018653X | Automann: 170.AC5018653 | Bendix: 5018652X
DESCRIPTION:
Model: Bendix BA-921 Detroit Air Brake Compressor
Vehicles: Detroit Diesel Series 60 DDEC V / DD60 EGR / DDC 2007 Series 60 engine applications
• Configuration: Closed room head
• Head type: 6-bolt head
• Discharge location: Rear discharge
• Bore diameter: 92.1 mm / 3.62 in
• Stroke: 56 mm / 2.20 in
• Swept volume: 247 cm³
• Drive: Engine driven
• Drive gear: 63-tooth gear with 21-tooth spline
• Thru-drive: 9-tooth spline
• Mounting: Flange side mount
• Cooling: Water and air cooled
• Cylinders: 1
• Bore × Stroke: 3.622 in × 2.126 in
• Rated displacement: 15.8 CFM @ 1250 RPM
• Flow: 11.6 CFM @ 1800 RPM / 120 PSI
• Flow: 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
• Minimum oil pressure: 15 PSI
• Minimum governor cut-out pressure: 120 PSI
• Minimum unloader line I.D.: 3/16 in
• Temperature range: 170°F inlet / 400°F discharge
• Cylinder head fastener torque: 265–292 in-lb
• Governor adapter fastener torque: 195–213 in-lb
• Rear end cover fastener torque: 195–213 in-lb
• Inlet port fitting: M27 × 2, 991–1089 in-lb
• Discharge port fitting: M22 × 1.5, 814–912 in-lb
• Water port fitting: M18 × 1.5, 593–637 in-lb
• Oil port fitting: 7/16-16 UNF, 150–170 in-lb
• Unloader port fitting: 1/8-27 NPT, 2–3 turns from finger tight
• Safety valve port: M16 × 1.5
• Maximum operating speed: 3000 RPM
Applications:
Designed for Detroit Diesel Series 60 DDEC V, DD60 EGR, and DDC 2007 Series 60 engine applications requiring a Bendix BA-921 compressor with 6-bolt head and rear discharge routing. Supplies compressed air for heavy-duty air brake systems using the original side-mounted Detroit configuration.
CROSS-REFERENCE(S):
5018652, 5018653, 5018654, 5018655, 5018769, 802789, 23536774, R23536774, 745-5018653X, 7455018653X, 170.AC5018653, 5018652X, 165-179-0013, 1651790013, 5018653BXR, 5018653RX, 5018653X, 5018654X, 704661AT, BW5018653, BW5018653X, BW802789, BX5018653, BX5018653X, EX5018653X, R9555018653X, 802789, 5018652, R23536774
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 coolant flow of 1.5 GPM
✔ Confirm external oil supply line is connected before startup
✔ Verify rear discharge routing before connecting air lines
✔ Confirm 6-bolt head configuration before installation
✔ Replace all mounting gaskets and sealing components during installation
✔ Verify air, oil, and coolant fittings are properly sealed before operation
✔ Drain air reservoirs before servicing air brake components
✔ Torque all fasteners and fittings to the specified values before returning vehicle to service
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
