Description
227331X – TF-500 PULLEY DRIVE AIR BRAKE COMPRESSOR – REMANUFACTURED
PART NUMBER(S):
Fleet Products: 227331X (Remanufactured) | Replaces OE: Bendix: 227331, 227321, 227029, 227207, 228270, 229031, 276002, 277890, 278342, 278659, 281975, 283387, 283388, 283389
DESCRIPTION:
Model: Bendix Tu-Flo 500 (TF-500) Pulley Drive Air Brake Compressor
Vehicles: Heavy trucks, semi trucks, 18 wheelers, and commercial truck applications
• Compressor Type: 2-cylinder, single-stage reciprocating air brake compressor
• Cooling: Water cooled
• Drive Type: Pulley drive, belt-driven
• Mounting: 4-hole base mount
• Shaft Length: 2.14–2.23 in
• Head Rotation: Right
• Block Rotation: Right
• Air Inlet Port Location: Left
• Air Outlet Port Location: Left
• Discharge Type: Flange
• No. of Cylinders: 2
• Bore: 2.5 in
• Stroke: 1.6875 in
• Displacement @ 1250 RPM: 12 CFM
• Max RPM: 3000 water cooled / 2400 air cooled
• Coolant Flow: 2.5 GPM
• Air Flow Requirement: 250 CFM
• HP @ 1250 RPM: 2.3 HP
• Temperature Range: 250°F inlet / 400°F discharge
• Unload Pressure: 60 PSI
• Oil Pressure: 5 PSI idle / 15 PSI maximum
• Oil Capacity: 0.53 qt
• Line Sizes: 5/8 in OD discharge, 1/2 in OD coolant, 1/4 in OD oil supply, 5/8 in OD oil return, 5/8 in ID air inlet
Applications:
Used on heavy-duty truck and commercial vehicle air brake systems requiring a TF-500 pulley drive compressor with 4-hole base mounting, left inlet/outlet orientation, and flange discharge configuration. The compressor supplies air for service brake and auxiliary pneumatic systems and is typically replaced due to reduced air output, oil carryover, overheating, or internal wear.
CROSS-REFERENCE(S):
227320TP, BX227320X, 745227320, 04625227320X
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:
✔ Verify 4-hole base mount, pulley drive configuration, left inlet/outlet orientation, and flange discharge before installation
✔ Confirm belt tension, pulley alignment, and shaft engagement depth before startup
✔ Verify head/block rotation and discharge orientation against the original compressor
✔ Use new installation gaskets and seals during installation
✔ Check oil supply, oil return, coolant, discharge, and air inlet lines for restrictions before startup
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
