Product Description
227406X TF-400 Air Compressor – Bendix Replacement
The 227406X TF-400 air compressor is a compact belt-driven compressor designed for commercial truck air brake systems and other pneumatic equipment used on heavy-duty vehicles. This compressor is in stock and ready to ship from Ace Motor Parts. It is manufactured as a high-quality replacement unit built to meet or exceed OEM performance standards for Bendix TF-400 compressors used on medium and heavy-duty truck platforms.
Air compressors are essential components in vehicles equipped with air brake systems. They generate compressed air that is stored in onboard reservoirs and used to activate service brakes, parking brakes, and other air-powered vehicle systems. Without a properly operating compressor, the vehicle cannot maintain the air pressure required for safe braking performance.
The TF-400 compressor series was designed for applications where a reliable air supply is needed but available mounting space may be limited. Its compact construction and efficient pumping design make it suitable for trucks and equipment that use a belt-driven compressor system.
TF-400 Compressor Design
The TF-400 is engineered as a single-cylinder reciprocating compressor that operates through a single-stage compression cycle. As the piston moves through its stroke, air is drawn into the cylinder, compressed, and discharged into the vehicle’s air system.
At standard operating speeds, the compressor produces approximately 7.25 cubic feet of air per minute at 1250 RPM. This airflow capacity is sufficient to maintain the compressed air supply required by many medium-duty and commercial vehicle braking systems.
The compressor is driven by a pulley connected to the engine through a belt system. Engine oil lubricates internal components, helping reduce friction and maintain durability during continuous operation. The compressor housing is designed to dissipate heat through air cooling while maintaining stable performance under demanding operating conditions.
The air compressor works with the vehicle’s governor and unloading mechanism to maintain proper air pressure within the brake system reservoirs. When system pressure reaches the upper limit, the compressor unloads. Once pressure drops again during braking, the compressor resumes pumping to restore air pressure.
Key Features
- Direct replacement for Bendix TF-400 compressors
- Compact single-cylinder reciprocating compressor design
- Pulley-driven compressor for belt drive installations
- Approximately 7.25 CFM airflow output at 1250 RPM
- Air cooled compressor housing
- 4-hole base mount configuration
- Left-side air inlet and outlet orientation (viewed from rear)
- Designed for medium and heavy-duty commercial truck air brake systems
- In stock and ready to ship from Ace Motor Parts
Technical Specifications
| Part Number | 227406X |
| Compressor Model | TF-400 |
| Compressor Type | Single Cylinder, Single Stage |
| Drive Type | Pulley Driven |
| Mounting Style | 4-Hole Base Mount |
| Air Output | 7.25 CFM @ 1250 RPM |
| Bore | 2.0625 in |
| Stroke | 1.5 in |
| 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 Port | Left (Viewed from Rear) |
| Air Outlet Port | Left (Viewed from Rear) |
| Discharge Type | Flange |
| Oil Capacity | 0.53 qt |
| Weight | 29 lbs |
Typical Applications
The 227406X TF-400 compressor is commonly used in medium-duty and heavy-duty commercial vehicles equipped with belt-driven air brake compressors. The compact footprint makes it suitable for installations where space is limited while still delivering reliable compressed air output for brake system operation.
Typical applications include:
- Commercial trucks
- Medium-duty vocational trucks
- Semi trucks and tractor units
- Fleet service vehicles
- Specialty commercial equipment requiring compact compressors
OEM Cross Reference Numbers
| 103289 | 226364 | 227275 | 227299 |
| 227318 | 227406 | 227421 | 227431 |
| 227738 | 228124 | 228169 | 228176 |
| 228610 | 228765 | 228767 | 228850 |
| 229013 | 229079 | 229080 | 229081 |
| 229184 | 229451 | 229669 | 229825 |
| 275217 | 275701 | 276410 | 278534 |
| 279318 | 279614 | 280438 | 281214 |
| 281596 | 282219 | 282875 | 284281 |
| 289425 | 289819 | 226723 | 227406X |
Additional Service Interchange
| 227406X | 279614 | 226723 |
A cross-reference listing indicates this compressor may replace the part numbers shown. Always verify mounting style, port orientation, and system compatibility before installation.
Importance of Air Compressors in Commercial Vehicles
The air compressor is one of the most important components in any vehicle equipped with air brakes. It continuously supplies compressed air that allows the braking system to function correctly under normal driving conditions.
If a compressor becomes worn internally, air pressure may build slowly or drop during operation. Replacing the compressor restores proper airflow and helps ensure the vehicle maintains safe braking performance.
Browse our full selection of air brake compressors or explore our inventory of surplus air brake compressors for heavy duty trucks.
