Remanufactured Cummins 5.9L ISB QSB Diesel Engine
$6,958.00
Engines Factory offers a remanufactured Cummins 5.9L ISB QSB diesel engine in Long Block and Complete Drop-In configurations for commercial and industrial replacement. Selection depends on installation needs and accessory requirements, and Engines Factory will confirm the chosen configuration during quote review to ensure proper fitment. Provide applicable vehicle, engine, or equipment identification when requesting a quote.
Did you like this product? Add to favorites now and follow the product.
FL (800) 355-0068Start Live Call
Description
Product overview
This remanufactured Cummins 5.9L ISB QSB diesel engine is offered by Engines Factory. It is intended for commercial and industrial replacement applications and is available in multiple configurations to support different installation requirements. The exact configuration and included components are confirmed during the quote or order-review process. Engines Factory sells remanufactured powertrain products and assists customers through the quote process.
Applications
Typical applications include walk-in vans, buses, yard tractors, conventional cab trucks, and construction equipment in QSB family installations. These application examples are provided to help identify likely matches; confirm applicability using applicable vehicle, engine, or equipment identification before ordering.
Available configurations
Available configurations include Long Block and Complete Drop-In options. Selection depends on the vehicle or equipment setup and the scope of replacement required. Engines Factory will confirm the chosen configuration during quote review so the ordering details match your needs.
Product details
Cummins is the engine brand and the family designations are ISB and QSB. Displacement for this offering is 5.9L and the product is listed in the Diesel Engines category. Reference SKU 9118IJ when discussing this specific unit during the quote process.
Selection guidance
Provide applicable vehicle, engine, or equipment identification when available to assist in matching. Confirming engine family and displacement is a primary step for correct quoting and fitment verification. Engines Factory reviews supplied identifiers to confirm which configuration aligns with the requested replacement. Engines Factory staff can help identify documentation and next steps during quote review.
Replacement guidance
Operators selecting a replacement commonly choose between long block and drop-in configurations based on the replacement scope and accessory requirements. The remanufactured Cummins 5.9L ISB QSB diesel engine described here is presented to support initial selection and to initiate the quote process. Contact Engines Factory with questions about identification or configuration prior to ordering.
Request a quote
To begin pricing and configuration, please request a quote and provide applicable vehicle, engine, or equipment identification.
- All engines are assembled in the USA.
- Replaces 100% of rings, bearings, bushings, gaskets, and seals.
- Matched OEM requirements for piston type depending upon HP and application.
- All heads get new valves and are vacuum tested to ensure the quality of the valve job. All heads are pressure tested and upgraded to the latest style valve seal.
- Cylinder head seats replaced 100% new.
- Camshaft is checked for size, reground, if necessary, and micropolished to OEM specifications.
- All connecting rods are demagnetized.
- Core plugs are 100% stainless steel to avoid corrosion.
- Blocks, heads and crankshafts are 100% magnaflux tested to avoid cracked components.
- Connecting rods have new bushings installed and both large and small end are remachined to OEM specifications.
Crankshaft is checked for size, reground, if necessary, and micropolished to OEM specifications.
ENGINE TESTING
Every engine is machined using state-of-the-art equipment and assembled using precise and repeatable methods. All engine production follows documented lean manufacturing processes and principles to create consistent quality and dependable outcomes.
All Short Block, Long Block, and Long Block Premium are 100% Sim tested before shipment.
Complete Drop-In engines are 100% dyno tested before shipment. Computer controls ensure that each engine dyno test is conducted under standard, repeatable settings. Every engine is run through a warm-up cycle; three separate cruise segments simulating light, medium, and heavy throttle conditions; maximum torque and horsepower tests; both high and low idle tests; and a black light leak detection test with dyed oil, coolant, and fuel.
we’ve been delivering remanufactured engines for skid steer loaders for over 30 years—longer than any competitor in the industry. Our veteran machinists, many with decades of experience, follow engine-specific rebuild procedures to ensure consistent quality with every unit.
Each engine is carefully rebuilt to meet or exceed OEM specifications, using top-tier components and proven techniques. This is more than just a repair—it’s a full remanufacturing process designed to restore the engine to like-new condition.
Before shipping, every complete skid steer engine is dyno-tested for performance and reliability, so you can install with confidence.
The product images shown are for illustration purposes only and may not be an exact representation of the final product. All information is subject to change without notice.
On-Road Complete Drop-In configurations: 2yr/unlimited mileage
Long Block configurations: 1 year/unlimited mileage.
Motorhome/RV Applications: 1 year parts and labor only.
Some restrictions apply; see limited warranty details or call for more information.
Factory-Direct Engines & Fast Shipping
Engines Factory supplies remanufactured gas, diesel, marine, and industrial engines, along with transmissions, cylinder heads, turbos, and other powertrain components. We serve repair shops, dealerships, fleets, marine businesses, and vehicle owners nationwide. Contact our team for availability, pricing, and a professional quote. Nationwide shipping is available.
Copyright © 2026 Engines Factory. All rights reserved.
