The used A26 engine is a 12.4L inline-six turbo diesel built for heavy-duty and long-haul trucks. Designed for fuel efficiency, strong torque, and long service life, the International A26 engine offers dependable performance for commercial vehicles. Each used OEM unit is inspected and tested before shipping to ensure a reliable and cost-effective replacement.
Features
Tested Engine with Warranty
Hassle-Free Returns Available
Live Customer Support
Direct Fit for Your Vehicle
The Navistar A26 engine is a 12.4-liter inline-six turbo diesel designed for over-the-road and fleet trucks. With modern fuel management and durable internal components, the A26 provides strong horsepower, consistent torque, and improved efficiency for commercial use. This engine is a dependable replacement that restores factory performance without the high cost of a new diesel assembly.
This used A26 engine fits trucks originally equipped with the 12.4L A26 diesel configuration. Because compatibility varies by VIN, engine serial number, horsepower rating, and emissions specification, fitment is verified before shipment to ensure the correct engine assembly matches your vehicle. If your truck was factory-equipped with a Navistar A26 engine, this replacement unit is designed to restore proper drivability and heavy-duty performance when professionally installed.
Choosing a used A26 engine for sale can significantly reduce downtime and overall replacement costs compared to sourcing a new or fully rebuilt unit. Each engine is inspected and evaluated prior to shipping to confirm mechanical integrity and operational reliability. If you are actively searching for a heavy-duty truck replacement engine or a dependable commercial inline-six diesel motor, you can browse our fleet diesel engine inventory to secure a tested OEM assembly ready for installation.
Every engine includes up to 90 days of warranty coverage for added peace of mind. Orders ship nationwide within 2–5 business days, helping minimize downtime for fleet operators and owner-operators. Installation services are not included, though assistance locating a qualified installer can be arranged if needed. For official specifications and manufacturer reference, buyers may consult technical information provided by International through the official website.
Specifications
Product Type
Engine
Displacement (Engine Size)
12.4L I6
Fuel Type
Diesel
Availability
In Stock
Shipping
Nationwide Available
Use Case
Ideal for performance builds, swaps, and replacements
Frequently Asked Questions
What is the International Navistar A26 engine?
The A26 is a 12.4L inline-six turbo diesel engine used in heavy-duty and long-haul commercial trucks.
Is this a complete used Navistar A26 engine assembly?
Yes. The engine offered is a complete OEM diesel assembly removed from a compatible truck and inspected before resale.
How do I confirm compatibility with my truck?
We verify fitment using your VIN, engine serial number, and configuration details before shipment.
Is the A26 engine suitable for fleet operations?
Yes. The Navistar A26 engine platform is commonly used in over-the-road and fleet trucking applications.
What warranty coverage is included?
Each used A26 engine includes up to 90 days of warranty protection.
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Shipping Policy
Our shipping policy is flexible, as the shipping charges depend on the location. A few certain remote regions like CO, UT, NY, OR, & CA may have additional shipping charges or delivery fees. However, some circumstances may cause delays, but we always strive to deliver your order as quickly as possible.
Please note that all shipping times are estimates and not guaranteed. We examine all rebuilt and used engines before shipment and aim to provide high-quality used engines and transmissions. Shipping details and fees will be disclosed to consumers before any transactions are made. Our team is operational 24/7, and you can call us at +1-888-799-0188 to place an order.
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