4933559 | Genuine Cummins® Single Cylinder Air Compressor for ISB and QSB engines

SKU: 4933559 MPN: 4933559

When air delivery cannot fluctuate, the Genuine Air Compressor maintains a steady 145 psi under load. Part number: 4933559. Brand: Cummins. Condition: new. Built for ISB and QSB engines, EPA07 compliant.

$1,679.00
No Core Charge
8 in stock, ready to ship

Pickup available at Warehouse - Howard st 7092 ste F

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: 4933559

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  • Location icon, warehouse pickup point.
    Pickup available. Usually ready in 24 hours

Product Description

Product Name Air Compressor Product Name Air Compressor
Type Single Cylinder Type Single Cylinder
Brand Cummins® Brand Cummins®
Condition New Condition New
Part Number 4933559 Part Number 4933559
Cross Reference 4933559RX Cross Reference 4933559RX
Engine Compatibility
Cummins ISB, QSB Cummins ISB, QSB
Emission Compliance EPA07 Emission Compliance EPA07
Specifications
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 0.36 in Port thread 8.1 Ø 0.36 in
Port thread 9 3/4" - 16 UNF Port thread 9 3/4" - 16 UNF
Port thread 9.1 3/4" - 16 UNF Port thread 9.1 3/4" - 16 UNF
Port thread 9.2 3/4" - 16 UNF Port thread 9.2 3/4" - 16 UNF
Swept volume (cm³) 318 cm3 Swept volume (cm³) 318 cm3
Temperature range 30°C to +90°C Temperature range 30°C to +90°C

Useful Information

Description and Purpose:

Part number: 4933559 refers to this Genuine Cummins Air Compressor supplied in new condition for ISB and QSB EPA07 engines. The single-cylinder, water-cooled construction with engine-fed lubrication delivers stable compressed air required for braking and auxiliary pneumatic systems. Cross reference: 4933559RX

Why Replacement is Important:

Loss of compressor efficiency can affect brake response and overall air system stability. Replacing the unit helps avoid pressure drops and ensures dependable system operation.

Impact on Vehicle Performance:

Consistent air supply improves brake reliability, supports auxiliary components, and helps maintain predictable vehicle behavior under load.

Manufacturer Information:

Cummins® applies advanced engineering and strict quality control to provide parts that ensure reliable operation, stable system integration, and long-term durability.

Tags & Category: Air Compressor, Cummins, ISB, QSB, EPA07, Cummins Air Compressor, Single Cylinder Air Compressor, Air Brake Compressor, Heavy Duty Truck, Commercial Vehicle, Diesel Engine, Brake Air Supply, Engine Air Compressor, Pneumatic System

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: 4933559