5579049RX | Genuine Cummins® Air Brake Compressor

SKU: 5579049 MPN: 5579049

This new Cummins® Single cylinder air brake compressor (part number 5579049, cross-reference 5579049RX) is a heavy-duty solution for commercial trucks. Featuring water cooling and 145.0 psi max pressure, it fits QSX15, QSB, ISB, ISX engines and meets OEM quality standards.

$1,299.00 $1,279.00
No Core Charge
3 in stock

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Product Description

Product Name Single Cylinder Air Brake Compressor Product Name Single Cylinder Air Brake Compressor
Condition New Condition New
Brand Cummins® Brand Cummins®
Part Number 5579049 Part Number 5579049
Cross Reference 5579049RX Cross Reference 5579049RX
Type Single Cylinder Type Single Cylinder
Suitable foe Engine
Cummins QSX15 QSB ISB ISX Cummins QSX15 QSB ISB ISX
Specifications
Cooling Water Cooling Water
Lubrication Lubrication supplied from engine Lubrication Lubrication supplied from engine
Mounting Mounting Flange Mounting Mounting Flange
Crankshaft Thread M20 x 1.5 Crankshaft Thread M20 x 1.5
Operating speed: 3000 (1/min) Operating speed: 3000 (1/min)
Max. operating pressure: 145.0 psi Max. operating pressure: 145.0 psi
Piston diameter: 3.35 in Piston diameter: 3.35 in
Piston stroke: 2.20 in Piston stroke: 2.20 in
Swept Volume 318 cm³ Swept Volume 318 cm³
Calculated Volume 0.000001 dm³ Calculated Volume 0.000001 dm³
Port Thread 0 0.81 in Port Thread 0 0.81 in
Port Thread 2 M27 x 2 Port Thread 2 M27 x 2
Port Thread 4 M10 x 1.0 Port Thread 4 M10 x 1.0
Port Thread 8.1 Ø 0.4 in Port Thread 8.1 Ø 0.4 in
Port Thread 9 M18 x 1.5 Port Thread 9 M18 x 1.5
Port Thread 9.1 M18 x 1.5 Port Thread 9.1 M18 x 1.5
Port Thread 9.2 M18 x 1.5 Port Thread 9.2 M18 x 1.5
Temperature Range -40°C to +80°C Temperature Range -40°C to +80°C

Useful Information

Description and Purpose:

The Cummins® Single Cylinder Air Brake Compressor (Part Number: 5579049) is an OEM-spec direct replacement designed for QSX15, QSB, ISB, and ISX engines. It features water cooling, engine-supplied lubrication, and a mounting flange for secure installation. 

Why Replacement is Important:

Replacing a worn or malfunctioning compressor with a genuine direct-fit part is essential to maintain safe and reliable air brake function. This part ensures uninterrupted air supply for the system, meeting manufacturer requirements and restoring the vehicle's braking capacity.

Impact on Vehicle Performance:

This unit supports up to 145 psi operating pressure with a 318 cm³ swept volume, enabling the air brake system to function correctly under load. With exact mounting and thread specifications, it integrates seamlessly, providing reliable performance without modification.

Manufacturer Information:

Cummins® is a globally recognized manufacturer of engine and drivetrain components. Their OEM-grade parts are engineered to fit and function as intended from the factory, offering durability, compatibility, and peace of mind for commercial and industrial vehicle maintenance.

Tags Category: Air Brake Compressor, Compressor, Brake System, Pneumatic System, Air System, Air Compression, Pneumatic Component, Compressed Air, Air Brake System Component, Single Cylinder

Warranty

Parts Finder Q offers a 365-days warranty for all types of parts in any condition. The warranty applies exclusively to purchases made directly through our website (partsfinderq.com). Please note that purchases made through third-party platforms like eBay or Amazon are not covered by this warranty.

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  • Icon Truck, Fast Delivery
    Free shipping over $199 Place an order today and receive it on Mar 6
  • Clock Icon
    Orders placed before 7-PM EST will ship same business day
  • Location icon, warehouse pickup point.
    Pickup available usually ready in 24 hours
  • Need it fast? We offer overnight shipping

    Contact us to check if overnight next-day delivery is available for your order - PN: 5579049