3681902 | Genuine Cummins® Air Brake Compressor

SKU: 3681902 MPN: 3681902

For your commercial truck needs, consider this new Cummins® Single cylinder air brake compressor. This heavy-duty truck part, with part number 3681902, features water cooling and 145.0 psi max pressure. It's a direct replacement for QSX15, QSB, ISB, ISX engines, ensuring OEM quality.

$1,299.00
No Core Charge
3 in stock

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Contact us to check if overnight next-day delivery is available for your order - PN: 3681902

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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 3681902 Part Number 3681902
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: 3681902) is a direct replacement built to match original specifications for engines QSX15, QSB, ISB, ISX. With features such as water cooling, engine-fed lubrication, and mounting flange, it ensures compatibility and straightforward installation. This unit provides the same fit and function as the original factory-installed compressor.

Why Replacement is Important:

Replacing a worn compressor with a genuine OEM-spec component is essential for maintaining brake system reliability. A failing unit may result in air pressure loss, affecting safety. This compressor is an exact fit, restoring proper system performance without requiring modifications.

Impact on Vehicle Performance:

Designed to handle pressures up to 145 psi and operating speeds up to 3000 RPM, this compressor supports consistent air delivery across various driving conditions. With a precise piston design and port threading, it ensures stable operation in demanding environments, helping to maintain factory-level vehicle performance.

Manufacturer Information:

Cummins® is an industry leader in diesel technology, offering OEM-quality components trusted worldwide. Known for engineering excellence and durability, Cummins parts are designed for exact compatibility and long-term reliability in heavy-duty applications.

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: 3681902