3976366 | Genuine Cummins® 1 Cylinder Air Brake Compressor for ISB and B engines

SKU: 3976366 MPN: 3976366

Power your braking system with the Genuine Cummins 1-Cylinder Air Brake Compressor. Condition: new. Part number: 3976366. Engineered for lasting air performance across B5.9 and ISB5.9G engines.

$1,499.00
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 3976366 Part Number 3976366
Cross Reference 3976366RX Cross Reference 3976366RX
Specifications
Calculated Volume (dm³) 10.13 Calculated Volume (dm³) 10.13
Swept volume (cm³) 247 cm3 Swept volume (cm³) 247 cm3
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 2.95 in Piston diameter 2.95 in
Piston stroke 2.20 in Piston stroke 2.20 in
Port thread 0 0.98 in Port thread 0 0.98 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 M10 x 1 Port thread 8.1 M10 x 1
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
Temperature range -40°C to +80°C Temperature range -40°C to +80°C
Engine Compatibility
Cummins 4B3.9, 6B5.9, B5.9 G, B5.9 Gas Plus CM556 Cummins 4B3.9, 6B5.9, B5.9 G, B5.9 Gas Plus CM556
Cummins ISB5.9G CM2180 Cummins ISB5.9G CM2180
Emission Compliance EPA02 Emission Compliance EPA02

Useful Information

Description and Purpose:

This Genuine Cummins 1 Cylinder Air Brake Compressor is a new part under Part number: 3976366. Built to maintain consistent air delivery for the brake system, it works directly with the engine’s lubrication and cooling setup. Designed as a single-cylinder, water-cooled unit, it provides steady operation and reliability for Cummins engines 4B3.9, 6B5.9, and ISB5.9G CM2180. Cross reference: 3976366RX

Why Replacement is Important:

Worn compressors can cause air loss, brake delays, and reduced safety. Installing a new Cummins 3976366 restores correct air pressure and ensures dependable braking performance.

Impact on Vehicle Performance:

A properly functioning air brake compressor keeps braking smooth and stable, preventing pressure drops and ensuring the entire air system performs efficiently.

Manufacturer Information:

Cummins® stands for power and innovation, offering expertly manufactured components that maintain engine performance and extend operational lifespan.

Tags & Category: Air Brake Compressor, Single Cylinder Compressor, Cummins Air System, 4B3.9, 6B5.9, B5.9G, B5.9 GAS PLUS CM556, ISB5.9G CM2180, EPA02, Diesel Engine Air Supply, Heavy-Duty Brake Component, OEM Cummins Compressor, Engine-Mounted Compressor, Pneumatic Brake 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: 3976366