5266299 | Genuine Cummins® Air Brake Compressor 1 Cylinder for ISB6.7, QSB6.7

SKU: 5266299 MPN: 5266299

Stay confident behind the wheel with this Genuine Cummins 1-Cylinder Air Brake Compressor. Condition: new. Part number: 5266299. Compatible with ISB6.7 and QSB6.7 engines. Built for heavy-duty trucking conditions.

$1,689.00
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 5266299 Part Number 5266299
Cross Reference 5266299RX Cross Reference 5266299RX
Interchange Part Number 4988936 Interchange Part Number 4988936
Engine Compatibility
Cummins ISB6.7, QSB6.7 Cummins ISB6.7, QSB6.7
Years 2008-2024 Years 2008-2024
Specifications
Calculated Volume (dm³) 21.155 Calculated Volume (dm³) 21.155
Cooling Water Cooling Water
Crankshaft thread Ø 34.92 mm Crankshaft thread Ø 34.92 mm
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 Port thread 9 3/4
Port thread 9.1 3/4 Port thread 9.1 3/4
Port thread 9.2 3/4 Port thread 9.2 3/4
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) 393.2 x 179.1 x 300.4 Size (mm x mm x mm) 393.2 x 179.1 x 300.4

Useful Information

Description and Purpose:

This New Genuine Cummins Air Brake Compressor Identified by Part number: 5266299, is a single-cylinder unit engineered for ISB6.7 and QSB6.7 engines. It delivers reliable air supply for the braking system, even under extreme operating conditions, and features water cooling and lubrication supplied directly from the engine to maintain optimal performance. Its robust construction and single-cylinder design provide consistent air pressure, supporting heavy duty braking requirements in trucks and commercial vehicles. Cross reference: 5266299RX

Why Replacement is Important:

A worn compressor can reduce air supply, risking delayed brake response. Replacing it restores full system functionality and improves safety.

Impact on Vehicle Performance:

Maintaining a functional single-cylinder compressor ensures steady air pressure, allowing brakes to respond effectively. This supports vehicle reliability and prevents brake-related downtime.

Manufacturer Information:

Cummins® is a leading brand in heavy-duty engine technology, known for its commitment to quality and innovation.

Tags & Category: Air Brake Compressor, Cummins air brake compressor, 1 cylinder air compressor, ISB6.7 brake compressor, QSB6.7 brake compressor, heavy duty truck compressor, Cummins ISB6.7 parts, Cummins QSB6.7 parts, 2008-2024 truck parts, commercial vehicle air brake, single cylinder compressor, truck air system, heavy duty braking components, Cummins engine accessories, ISB/QSB air compressor, Cummins truck parts

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: 5266299