3689649RX | Genuine Cummins® Air Brake Compressor 1 Cylinder for ISX, QSX

SKU: 3689649RX MPN: 3689649RX

Power your braking system with unmatched reliability. Part number: 3689649RX. Condition: new. This Genuine Cummins Air Brake Compressor ensures consistent air pressure for safe and efficient stopping on ISX and QSX engines.

$1,479.00
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: 3689649RX

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    Orders before 7 PM EST ship same business day
  • Location icon, warehouse pickup point.
    Pickup available. Usually ready in 24 hours

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 3689649RX Part Number 3689649RX
Cross Reference 3689649 Cross Reference 3689649
Engine Compatibility
Cummins ISX, QSX Cummins ISX, QSX
Specifications
Calculated Volume (dm³) 13.98 Calculated Volume (dm³) 13.98
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 0.32 in Port thread 8.1 Ø 0.32 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
Swept volume (cm³) 318 cm³ Swept volume (cm³) 318 cm³
Temperature range -30°C to +90°C Temperature range -30°C to +90°C
Dimensions
Size (mm x mm x mm) 297.6 x 151.1 x 310.8 Size (mm x mm x mm) 297.6 x 151.1 x 310.8

Useful Information

Description and Purpose:

This Genuine Air Brake Compressor from Cummins, proudly offered in new condition and identified as Part number: 3689649RX, is designed to generate and maintain high-pressure air for the truck’s braking system. Engineered specifically for ISX and QSX engines, it ensures consistent brake responsiveness while supporting reliable operation of air-dependent accessories. Cross reference: 3689649

Why Replacement is Important:

A failing air compressor can lead to low air pressure, reduced braking efficiency, and potential system malfunctions, making prompt replacement essential for safety.

Impact on Vehicle Performance:

Maintains optimal brake pressure, supports air system stability, and ensures reliable stopping performance.

Manufacturer Information:

Cummins® delivers precision-engineered components designed for reliable fit, consistent engine performance, and long-term durability across diesel power systems.

Tags & Category: Air Brake Compressor, Cummins air brake compressor, 1 cylinder air compressor, ISX brake compressor, QSX brake compressor, heavy duty truck compressor, Cummins ISX parts, Cummins QSX parts, commercial vehicle air brake, single cylinder compressor, truck air system, heavy duty braking components, Cummins engine accessories, ISX/QSX air compressor, Cummins truck parts, 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: 3689649RX