4933782 Air Compressor Overhaul Kit For Cummins ISM11 QSM11 ISB QSB Heavy Duty Truck

Product Overview​

The 4933782 air compressor overhaul kit is a professional maintenance solution tailored for Cummins heavy-duty diesel engines, including popular models such as ISM11, QSM11, ISB, and QSB . As a comprehensive rebuild kit, it integrates all vulnerable and core components required for air compressor maintenance, effectively solving common faults like air leakage, insufficient pressure, abnormal noise and reduced efficiency caused by component wear. This kit is widely used in heavy trucks, construction machinery and commercial vehicles equipped with Cummins power systems, providing a one-stop repair solution for repair workshops and fleet maintenance teams.​

Core Product Advantages​

1. Complete Component Configuration: Includes all essential repair parts - high-precision valve plates with pre-installed valves, wear-resistant piston rings, oil-resistant gaskets, sealed oil seals and other core components , eliminating the need for separate purchases of scattered parts.​

2. High-Quality Material Selection: Valve plates adopt wear-resistant alloy material, gaskets and oil seals use NBR (nitrile-butadiene rubber) with excellent oil resistance and aging resistance, ensuring stable performance under high temperature and pressure .​

3. Perfect Compatibility: Precisely engineered to match Cummins ISM11/QSM11/ISB/QSB engine air compressors, standard size design ensures direct replacement without modification or adjustment .​

4. Efficient Maintenance Solution: All components are pre-inspected and assembled for easy installation, significantly reducing repair time and labor costs, ideal for quick overhaul of faulty air compressors .​

5. Restores Full Performance: After replacement, it effectively restores the air compressor's air pressure output capacity, solves air leakage and pressure loss problems, and extends the overall service life of the air compressor .​

6. Rigorous Quality Testing: Each component undergoes strict dimensional accuracy and durability tests before leaving the factory, ensuring consistent quality and reliable operation under heavy-load and long-distance working conditions .​

7. Cost-Effective Alternative: Provides the same performance as original-grade parts at a more competitive price, suitable for bulk procurement by fleet operators and auto parts distributors .​

Basic Product Parameters​

• Part Number: 4933782​

• Product Name: Air Compressor Overhaul / Rebuild Kit​

• Applicable Engine: Cummins ISM11, QSM11, ISB, QSB series diesel engines​

• Core Components: Valve plate assembly, piston rings, gaskets, oil seals, valve seats (full set)​

• Material: Alloy steel, NBR rubber, high-density graphite gasket​

• Application: Heavy truck air compressor maintenance, construction machinery air pump overhaul​

• Installation Type: Direct replacement, no additional adapters needed​

• Package: Neutral export carton, shockproof foam inner packaging with component classification storage​

Application Scenarios​

Ideal maintenance kit for Cummins-equipped heavy-duty trucks, logistics tractors, dump trucks, engineering machinery and generator sets. Widely used in scenarios such as long-distance logistics transportation, construction site operations, mountain road haulage and high-frequency air compression demand environments. It effectively solves air compressor failures caused by long-term wear, ensuring stable operation of the vehicle's braking and air supply system.​

Purchase Reminder​

Please confirm your engine model (ISM11/QSM11/ISB/QSB) and air compressor specifications before ordering to ensure perfect matching. We support bulk wholesale orders for global auto parts distributors and fleet maintenance centers, with sufficient stock and competitive bulk pricing. For technical installation guidance or component list inquiries, please contact our customer service team for professional support.​