4318216 | Genuine Cummins® Air Brake Compressor

SKU: 4318216 MPN: 4318216

This new Cummins® Single cylinder air brake compressor is an essential truck component for heavy-duty applications. Part number 4318216 ensures it's a direct replacement for QSX15, QSB, ISB, ISX engines. Features include water cooling and 145.0 psi max pressure, all to OEM quality.

$1,279.00
No Core Charge
1 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: 4318216 Part Number: 4318216
Type: Single Cylinder Type: Single Cylinder
Suitable foe 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: 4318216) is an original replacement component built to the exact standards of the OEM. Intended for use with engines such as QSX15, QSB, ISB, ISX, it features water cooling, engine-driven lubrication, and a flange mounting system. This unit is supplied as a direct-fit solution for reliable air delivery in commercial brake systems.

Why Replacement is Important:

Air brake compressors are vital for maintaining consistent braking pressure. Using this genuine Cummins replacement restores original system performance and prevents pressure loss caused by internal wear, leaks, or reduced output in aging units. It’s an essential part of routine, safety-critical maintenance.

Impact on Vehicle Performance:

With its OEM design parameters, this compressor maintains factory-level air pressure support, essential for safe brake response under load. The precise dimensions and specifications (including piston stroke, port threads, and pressure capacity) ensure compatibility without modifications, supporting smooth and consistent vehicle operation.

Manufacturer Information:

Cummins® is a trusted name in heavy-duty diesel engine technology, known for quality-engineered components and long-standing OEM partnerships. Their replacement parts reflect the same reliability and performance standards found in their factory-installed equipment across global fleets.

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: 4318216