4089686RX | Genuine Cummins® Air Compressor Head Repair Kit

SKU: 4089686RX MPN: 4089686RX

Restore air system performance with this Genuine Air Compressor Head Repair Kit. Brand: Cummins. Part Number: 4089686RX. Condition: New. Fits QSB6.7, ISB6.7, and QSB4.5 engines.

$949.00
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: 4089686RX

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Product Description

Product Name Air Compressor Head Repair Kit Product Name Air Compressor Head Repair Kit
Condition New Condition New
Brand Cummins® Brand Cummins®
Part Number 4089686RX Part Number 4089686RX
Cross Reference 4089686, 4089686NX Cross Reference 4089686, 4089686NX
Engine Compatibility
Cummins QSB6.7, ISB6.7, QSB4.5 Cummins QSB6.7, ISB6.7, QSB4.5

Useful Information

Description and Purpose:

Genuine Air Compressor Head Repair Kit. Part Number: 4089686RX. Brand: Cummins. Condition: New. Designed for restoring the air compressor head function on EPA02 QSB6.7, ISB6.7, and QSB4.5 engines. The kit includes essential components needed to reseal and refurbish the compressor head, helping to maintain proper air delivery and pressure balance in diesel-powered systems. Manufactured to meet OEM specifications, this repair solution ensures compatibility, durability, and reliable function in commercial vehicle applications. Cross reference: 4089686, 4089686NX

Why Replacement is Important:

Over time, wear in the compressor head can lead to air leaks, reduced pressure output, and inefficient system performance. Replacing the internal components with this repair kit prevents costly downtime and avoids complete compressor failure.

Impact on Engine Performance:

A properly sealed and restored compressor head supports consistent air delivery for engine brakes, suspension systems, and auxiliary functions—helping maintain overall vehicle safety and performance.

Manufacturer Information:

Cummins® is a leader in diesel engine technology, offering dependable solutions engineered for heavy-duty transport and off-highway equipment.

Tags & Category: Air Compressor Parts, Air Compressor Head, Compressor Repair Kit, QSB6.7 Parts, ISB6.7 Parts, QSB4.5 Parts, Cummins Engine Components, Heavy Duty Engine Parts, Diesel Engine Accessories

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: 4089686RX