Remanufactured Cummins QSB 4.5L Diesel Engine – Long Block & Complete Drop-In
$9,155.00
Remanufactured Cummins QSB 4.5L diesel engine suited for industrial, commercial, and off-highway equipment such as construction machinery, material handling, agriculture, and generator sets. Available configurations include Long Block and Complete Drop-In. Provide applicable vehicle, engine, or equipment identification when requesting fitment verification and a quote.
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Description
Product overview
This remanufactured Cummins QSB 4.5L diesel engine offers a remanufactured engine option for industrial and off-highway equipment where a QSB 4.5L is specified. The exact configuration and included components are confirmed during the quote or order-review process. Use the information in the sections below to verify identity and prepare for fitment evaluation.
Engine identity and verified details
Engine brand: Cummins. Engine family: QSB. Engine model: QSB. Engine size: 4.5L. SKU: 7543DU. Use these verified identity details when matching service records, equipment documentation, or parts references to help confirm that a QSB 4.5L is appropriate for the intended installation. Record the SKU and any equipment references when requesting a quote to assist verification.
Listed applications
Common application categories for this remanufactured Cummins QSB 4.5L diesel engine include construction machinery, material handling equipment, agricultural machinery, and generator sets. These categories reflect typical uses for the QSB family and help guide preliminary suitability assessments.
Available configurations
Available configurations include Long Block and Complete Drop-In where offered. Choose a configuration based on installation needs, equipment interface considerations, and access constraints. Select the configuration that best matches the equipment interface and service requirements to minimize installation modifications.
Fitment and identification guidance
Confirm fitment by providing applicable vehicle, engine, or equipment identification and by comparing engine family and displacement. Gather any available engine identifiers and installation notes to assist in determining compatibility. When preparing documentation for a quote, compare the verified identity details above with equipment records and note any mounting or interface constraints to discuss during the configuration confirmation. Include any available installation notes and interface constraints so the configuration can be evaluated against the equipment.
Request a quote
To confirm the exact configuration and request pricing, request a quote. Provide applicable vehicle, engine, or equipment identification to help verify fitment and configuration prior to ordering.
- 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.
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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.
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