2870018 | Genuine Cummins® Air Brake Compressor

SKU: 2870018 MPN: 2870018

Rely on the quality of your commercial vehicle with this new Cummins® Single cylinder air brake compressor. This heavy-duty truck part, part number 2870018, offers water cooling and a maximum operating pressure of 145.0 psi. A direct fit for QSX15, QSB, ISB, ISX engines, built to OEM specifications.

$1,279.00
No Core Charge
1 in stock

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Contact us to check if overnight next-day delivery is available for your order - PN: 2870018

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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: 2870018 Part Number: 2870018
Type: Single Cylinder Type: Single Cylinder
Suitable for Engine:
QSX15 QSB ISB ISX QSX15 QSB ISB ISX
Specifications:
Weight: 44 lb Weight: 44 lb
Product category: Device Product category: Device
Calculated Volume (dm³): 21.155 Calculated Volume (dm³): 21.155
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
Size (mm x mm x mm): 393.2 x 179.1 x 300.4 Size (mm x mm x mm): 393.2 x 179.1 x 300.4
Kit:
9111539422 Connecting Rod/Piston 9111539422 Connecting Rod/Piston
9111549292 Valve Plate/Gasket/Hexagon head screw ISO4017-M5x18 9111549292 Valve Plate/Gasket/Hexagon head screw ISO4017-M5x18
4111515002 Pressure valve 4111515002 Pressure valve
8107071574 Rolling bearing DIN625-6308 C3 8107071574 Rolling bearing DIN625-6308 C3
9111539252/ 9111536034 Flange/ Countersunk head screw DIN7991-M6x12/ Cover 9111539252/ 9111536034 Flange/ Countersunk head screw DIN7991-M6x12/ Cover
8977729084 O-Ring 8977729084 O-Ring
8950735894/ 9111539422 Cap 8950735894/ 9111539422 Cap

Useful Information

Description and Purpose:

The Cummins® Single Cylinder Air Brake Compressor (Part Number: 2870018) is a genuine part designed for heavy-duty brake systems on QSX15, QSB, ISB and ISX engines. It is water-cooled, flange-mounted and has a displacement of 318 cc. The kit includes everything needed for quick and easy installation. As a Cummins® brand product, this compressor is built to last.

Why Replacement is Important:

Replacing a worn compressor with this genuine Cummins part helps maintain proper air pressure in the brake system. An exact-fit unit minimizes downtime and ensures the braking system functions reliably, especially under demanding driving conditions. It restores the vehicle's air system to its original factory condition.

Impact on Vehicle Performance:

This OEM-standard compressor ensures consistent air supply, which is critical for effective brake response and overall safety. Its precise engineering and factory-matched components prevent pressure loss, reduce wear on related parts, and keep the vehicle’s air system running as originally intended.

Manufacturer Information:

Cummins® is a global leader in power solutions, offering a wide range of OEM-grade engine and vehicle components. Known for durability and innovation, Cummins products are trusted across industries to deliver consistent quality and direct-fit reliability for commercial and industrial vehicles.

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.

Customer Reviews

Based on 1 review
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D
David Brown
Just ordered it and picked it up same day from the warehouse

Super glad I found this part online.
Didn’t have to wait weeks for the dealer.
Just ordered it and picked it up same day from the warehouse.
Saved me a ton of time!!!

  • 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: 2870018