Navistar International is now offering a free one-year factory-backed warranty for engine and aftertreatment systems on its most popular used on-highway vehicles. This warranty is available on units purchased from any Southwest International location now through December 2021 with service backed by us. 

The one-year warranty will apply to any qualifying used International® LT® Series or International® RH™  Series on-highway vehicle, the model year 2018 or newer, purchased from March through December 2021 by an end-user in the U.S. for domestic use.

Under the terms of the warranty offer, customers can take retail delivery of any eligible used International® LT® Series or International® RH™ Series vehicle from any of our locations by December 31, 2021, and International will provide a one-year, 100,000-mile factory warranty on the engine and aftertreatment systems at no charge. We currently have 15 eligible units available with varying specifications. Eligibility requirements for the vehicle include:

  • Model year 2018 or newer LT® or RH™ Series

  • Delivered to an end-user by Dec. 31, 2021

  • Vehicle must have less than 550,000 miles at time of sale; 475 HP or less

  • A clean health report provided by Southwest International less than 15 days prior to the warranty registration date

  • Preventive maintenance (PM) or Department of Transportation (DOT) inspection completed within the last 12 months

  • Clean title (no salvage or junk)

  • Retail sale in the U.S. to an end-user in the U.S.

  • The warranty registration submitted within 15 days of end-user purchase


"International is taking steps to make the process as simple and easy for the customer as possible," Stinsa noted.

When the purchase is from Southwest International, Navistar International will take care of the registration work at no charge and the warranty is effective at the time of sale. The warranty will be effective at the date of sale or the date of the qualifying health report and PM service, whichever is later.

The customer is responsible for any PM service or work required to pass the health report. The warranty does not cover any repairs required to pass a PM or DOT inspection or a health report.

"International is committed to providing our customers with vehicles and service they can rely on and this warranty offer demonstrates our confidence in these products," Stinsa said. "We are proud of the value offered by our used International® LT® and RH™ Series trucks and this warranty provides even more reason for a customer to buy one."