This high-performance Single Cylinder Air Brake Compressor is fully compatible with Mack MP8 Engines. Designed to serve as the heart of your heavy-duty air brake system, it supplies the essential pressure needed to control vehicle brakes safely and effectively. Featuring a reciprocating piston design, this compressor offers maximum durability for line haul operations. Its robust construction minimizes maintenance downtime, ensuring your truck stays on the road under the most extreme conditions.
Fortpro is a trusted leader in the development and manufacturing of premium-quality truck parts designed to meet the demands of semi-trucks and heavy-duty trucks. Renowned for innovation, durability, and reliability, Fortpro products are engineered to enhance performance, safety, and efficiency across a wide range of trucking applications.
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Basic Part Information6 attributes
| Product Line | Brakes |
|---|---|
| Category Name | Air Brake Compressors |
| Part Type | Air Brake Compressor |
| Alternate Part Name | Brake System Air Compressor, Heavy-Duty Air Compressor, Engine-Driven Air Compressor, Truck Air Compressor |
| OEM Part Number | 9121120020 |
| Condition | New |
Application/Fitment Attributes9 attributes
| Application Type | Heavy Duty Trucks, Semi-Trucks |
|---|---|
| Crankshaft Thread Specification | M20 x 1.5 |
| Mounting Type | Flange Mount |
| Port Thread 0 | Ø 34.9 mm |
| Port Thread 2 | M26 x 1.5 |
| Port Thread 4 | M16 x 1.5 |
| Port Thread 8.1 | M12 x 1.5 |
| Port Thread 9.1 | M16 x 1.5 |
| Port Thread 9.2 | M16 x 1.5 |
Dimensional/Physical Attributes4 attributes
| Calculated Volume | 15.84 dm³ |
|---|---|
| Piston Diameter | 85 mm |
| Piston Stroke | 56 mm |
| Swept Volume | 318 cm³ |
Technical/Performance Attributes5 attributes
| Cooling Method | Water |
|---|---|
| Cylinder Quantity | 1 |
| Lubrication Type | Lubrication supplied from engine |
| Maximum Operating Pressure | 203.1 psi |
| Operating Speed | 3000 (1/min) |
Intended Application
- Compatible with Mack MP8 Engines with Single Cylinder Air Compressor.
- Compatible with Volvo FH12 FM12 NH12 FM9 Trucks.
- Always compare with your OEM part number prior to purchase to confirm full compatibility.
- Mack: 20451727, 21353433
- Wabco: 9121120020, 9121120000, 9121120007