4318220RX | Genuine Cummins® Air Brake Compressor 1 Cylinder for ISX, QSX

SKU: 4318220RX MPN: 4318220RX

Ensure dependable air pressure for your heavy-duty truck with this Genuine Air Brake Compressor. Brand: Cummins. Condition: new. Part Number: 4318220RX. Compatible with ISX and QSX engines.

$1,299.00
No Core Charge
3 in stock

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Product Description

Product Name Air Brake Compressor Product Name Air Brake Compressor
Type Single-Cylinder Type Single-Cylinder
Condition New Condition New
Brand Cummins® Brand Cummins®
Part Number 4318220RX Part Number 4318220RX
Cross Reference 4318220 Cross Reference 4318220
Interchange Part Number 4318219 Interchange Part Number 4318219
Engine Compatibility
Cummins ISX, QSX Cummins ISX, QSX
Specifications
Calculated Volume (dm³) 13.98 Calculated Volume (dm³) 13.98
Cooling Water Cooling Water
Crankshaft thread M20 x 1.5 Crankshaft thread M20 x 1.5
Lubrication Lubrication supplied from engine Lubrication Lubrication supplied from engine
Max. operating pressure 145.0 psi Max. operating pressure 145.0 psi
Mounting Mounting Flange Mounting Mounting Flange
Operating speed 3000 (1/min) Operating speed 3000 (1/min)
Piston diameter 3.35 in Piston diameter 3.35 in
Piston stroke 2.20 in Piston stroke 2.20 in
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 0.32 in Port thread 8.1 Ø 0.32 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
Swept volume (cm³) 318 cm³ Swept volume (cm³) 318 cm³
Temperature range -30°C to +90°C Temperature range -30°C to +90°C
Dimensions
Size (mm x mm x mm) 297.6 x 151.1 x 310.8 Size (mm x mm x mm) 297.6 x 151.1 x 310.8

Useful Information

Description and Purpose:

This Genuine Cummins Air Brake Compressor is a new single-cylinder unit, distinguished by Part number: 4318220RX. Designed for ISX and QSX engines, it features water cooling and engine-supplied lubrication to maintain consistent performance. With multiple port options such as M20 x 1.5, M27 x 2, and M18 x 1.5, the compressor integrates seamlessly into commercial vehicle air brake systems. Cross reference: 4318220

Why Replacement is Important:

Replacing a worn or malfunctioning compressor is critical to ensure proper air pressure and avoid brake system failure. This helps maintain safe and responsive braking performance.

Impact on Vehicle Performance:

Provides stable air pressure to the braking system, supporting consistent stopping power and safe operation in heavy-duty applications.

Manufacturer Information:

Cummins® supports fleets with engines and components built for maximum uptime and consistent performance.

Tags & Category: Air Brake Compressor, Cummins air brake compressor, 1 cylinder air compressor, ISX brake compressor, QSX brake compressor, heavy duty truck compressor, Cummins ISX parts, Cummins QSX parts, commercial vehicle air brake, single cylinder compressor, truck air system, heavy duty braking components, Cummins engine accessories, ISX/QSX air compressor, Cummins truck parts

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: 4318220RX