Product Description
227407X TF-400 Air Compressor – Bendix Replacement (Pulley Drive)
The 227407X TF-400 air compressor is a compact pulley-driven compressor designed to provide compressed air for heavy-duty truck braking systems and other pneumatic components used on commercial vehicles. This compressor is in stock and ready to ship from Ace Motor Parts. It is produced as a high-quality replacement unit engineered to deliver dependable performance comparable to the original Bendix TF-400 compressor design.
Air compressors are a vital part of any vehicle equipped with air brakes. While the engine is running, the compressor continuously produces compressed air that is stored in the vehicle’s air reservoirs. This stored air is used to operate service brakes, parking brakes, and various auxiliary air-powered systems installed on heavy trucks and commercial equipment.
The TF-400 compressor series has long been used in fleet trucks and vocational equipment because of its compact design and reliable airflow output. Its pulley drive configuration allows the compressor to be powered through a belt system connected to the engine, making it suitable for installations where a gear-driven compressor is not used.
Compressor Operation and Design
The TF-400 compressor uses a reciprocating piston compression system that draws air into the cylinder, compresses it during the piston stroke, and then discharges it into the vehicle’s air system. This process repeats continuously while the engine operates, ensuring the vehicle maintains the air pressure required for braking and other pneumatic systems.
At an operating speed of approximately 1250 RPM, the compressor produces around 7.25 cubic feet of compressed air per minute. This airflow rate is designed to maintain proper pressure in the air reservoirs while minimizing horsepower demand from the engine.
The compressor housing is air cooled, allowing heat generated during compression to dissipate through airflow around the unit. Engine oil provides internal lubrication, helping protect critical components and ensuring smooth operation during continuous duty cycles typical of commercial trucking applications.
Key Features
- Direct replacement for Bendix TF-400 compressors
- Compact single-stage reciprocating compressor design
- Belt-driven pulley configuration
- Approximately 7.25 CFM airflow output at 1250 RPM
- Air-cooled compressor housing
- 4-hole base mounting configuration
- Right-side inlet and outlet port orientation (viewed from rear)
- Designed for commercial truck air brake systems
- In stock and ready to ship from Ace Motor Parts
Substitute Compressor Options
The 227407X TF-400 compressor may also be substituted with several Midland or Haldex compressor models when compatible with the vehicle installation.
- KN7020X – Haldex
- KN7020X – Midland
- KN7020 – Midland
Always verify mounting configuration, port orientation, and drive arrangement when substituting compressors.
Technical Specifications
| Part Number | 227407X |
| Compressor Model | TF-400 |
| Drive Type | Pulley Driven (Belt Drive) |
| Mounting Style | 4-Hole Base Mount |
| Cylinders | Single Cylinder Reciprocating Design |
| Bore | 2.0625 in |
| Stroke | 1.5 in |
| Air Output | 7.25 CFM @ 1250 RPM |
| Maximum Speed | 3000 RPM (Water Cooled) / 2400 RPM (Air Cooled) |
| Horsepower Requirement | 1.2 HP @ 1250 RPM |
| Cooling | Air Cooled |
| Minimum Unload Pressure | 60 PSI |
| Maximum Inlet Temperature | 250°F |
| Maximum Discharge Temperature | 400°F |
| Air Inlet Location | Right (Viewed from Rear) |
| Air Outlet Location | Right (Viewed from Rear) |
| Discharge Type | Flange |
| Oil Capacity | 0.53 qt |
| Weight | 23 lbs |
Typical Vehicle Applications
The 227407X TF-400 compressor is commonly installed on heavy trucks and commercial vehicles that utilize a belt-driven air compressor for their braking system. These compressors are often used in:
- Class 8 highway tractors
- Vocational fleet trucks
- Commercial service vehicles
- Specialized truck equipment with belt-driven compressors
Bendix OEM Cross Reference
| 102830 | 103039 | 225714 | 226829 |
| 227407 | 228177 | 228255 | 228256 |
| 228849 | 275047 | 275048 | 275403 |
| 275702 | 278952 | 279991 | 280373 |
| 280575 | 280956 | 281017 | 282349 |
| 282567 | 282896 | 284136 | 284172 |
| 285159 | 287377 | 287378 | 288784 |
| 289405 | 289408 | 289416 | 289818 |
Additional Industry Interchange
| CAT 1S2024 | 227407TP | 282766 |
| TF-400 | KN7041X | 107866 |
| 228083TP |
A cross-reference listing indicates that this compressor may replace the part numbers shown. Always confirm mounting style, port orientation, and system compatibility before installation.
Importance of Proper Air System Performance
The compressor is one of the most important components of any commercial vehicle braking system. It maintains the air pressure needed to apply the brakes and operate pneumatic equipment throughout the vehicle.
If the compressor begins to lose efficiency due to internal wear, the system may experience slow air pressure recovery or inconsistent braking response. Installing a properly built replacement compressor restores system airflow and helps maintain safe braking performance.
Browse our complete inventory of air brake compressors or explore our selection of surplus air brake compressors for heavy duty trucks.
