International MV Series — International's anchor medium-duty
The International MV Series is International's Class 6/7 medium-duty conventional truck — launched in 2018 to succeed the DuraStar platform that had anchored International's medium-duty lineup through the MaxxForce era. The MV brings updated architecture, current emissions integration, and Cummins B6.7 (Class 6) and Cummins L9 (Class 7) power, replacing the MaxxForce DT and MaxxForce 7/9 engines that powered older DuraStar inventory. The platform serves the broad medium-duty market across utility service, fire and EMS apparatus, propane delivery, school transportation, light construction, and broader Class 6/7 medium-duty fleet work. The platform succeeds the DuraStar platform that anchored International's medium-duty lineup through the MaxxForce era.
The platform serves utility service applications, fire and EMS apparatus, propane and fuel delivery, school bus chassis (in certain configurations), light construction support, refuse collection on the lighter end, and broader Class 6/7 medium-duty fleet work. The MV competes in the Class 6/7 medium-duty conventional market against Kenworth T180/T380, Peterbilt 535/537, Freightliner M2 106 and M2 112, and Mack MD-Series. For fleet operators choosing between platforms, the MV's combination of International dealer network access, Cummins B6.7 and L9 engine options, and the broad application range all factor into platform selection.
Why MV Series Trucks Come To Our Bench
MV Series calibration work tracks International's anchor medium-duty operational reality with Cummins B6.7 / L9 platform behavior across the production range:
Cummins B6.7 DPF derate. Standard Cummins B6.7 pattern, expressed through the specific operational stress profile of utility service, fire apparatus, propane delivery, and school bus chassis applications. DPF accumulation patterns produce derate clustering at predictable mileage thresholds depending on application severity. Cummins B6.7 and L9 calibration approaches draw on the broader B6.7/L9 application population work we maintain across the medium-duty market.
DEF dosing failures on EPA 2010+ builds. Standard post-2010 pattern. MV Series trucks accumulating mileage show DEF dosing failures, NOx sensor drift, SCR catalyst efficiency drops, and inducement countdown patterns clustering at predictable mileage thresholds.
EGR cooler degradation. Standard pattern across the Cummins B6.7 platform. Coolant intrusion into intake, intermittent fault codes, eventual catastrophic failure if untreated.
Performance tuning and operational character improvements. MV Series customers benefit from calibration work that delivers improved torque response, broader operating envelope at working RPM, and operational character matched to utility service, fire apparatus, propane delivery, and school bus chassis reality. Stock fleet calibrations leave operational capability available.
Calibration recovery on Cummins B6.7 ECMs. Standard recovery scope across the platform.
Cummins B6.7 / L9 Calibration Approach On The MV Series
MV Series calibration work uses Cummins INSITE diagnostic with B6.7 specific calibration libraries. The libraries are MV Series application-specific within the broader engine platform ecosystem — International's anchor medium-duty calibration approaches differ from other International platform calibrations because the operational reality differs meaningfully.
For each MV Series customer, intake conversation centers on engine identification, application, year, and operational priorities. Application diversity conversations cover utility, fire, school bus, and propane delivery scenarios; emissions calibration conversations focus on resolving recurring aftertreatment-driven service issues.
Service Paths For MV Series Programming
Ship-in is the most common path. Pull the ECM, ship to Fort Lauderdale, 2-3 day programming turnaround. Remote programming works for shops with appropriate diagnostic software access. On-site service is available for South Florida fleet customers running MV Series inventory.
Quotes return same business day. Tell us the year, the engine, the application, fleet size, and current operational situation. For fleet customers running multiple MV Series trucks or mixed International inventory (modern MV Series alongside legacy MaxxForce-powered International trucks), multi-truck programming pricing applies and scheduling coordinates around operational priorities.
The MV Series In International Truck Family Context
The MV Series draws on International's broader truck family architecture and the modernized engine ecosystem that replaced MaxxForce-era platforms. Our calibration work draws on the broader International platform expertise we maintain across LT, RH, CV, MV, HV, HV507, and HX applications, with calibration approaches consistent across the broader International truck family.
For fleet customers running mixed International inventory across legacy MaxxForce-powered platforms (ProStar, WorkStar, DuraStar) and modern Cummins/A26-powered platforms (MV Series and related), calibration approaches benefit from the consistent platform expertise we maintain across both generations.
DuraStar Legacy And MV Calibration Transition
International fleet operators transitioning between older MaxxForce-powered DuraStar inventory and newer MV inventory face calibration considerations spanning two distinct platform generations. The MaxxForce DT and MaxxForce 7/9 engines in older DuraStars present the well-documented MaxxForce-era calibration challenges — EGR cooler issues, sensor failures, calibration drift — that the modern MV's Cummins-based architecture doesn't share. For International fleet operators running mixed DuraStar (MaxxForce) and MV (Cummins B6.7/L9) inventory, our calibration work covers both platform generations consistently, drawing on the MaxxForce expertise we maintain alongside the modern Cummins B6.7 and L9 platform knowledge that anchors the broader Class 6/7 medium-duty market.
School Bus Chassis And Specialty Application Considerations
MV Series chassis appear in school bus configurations through arrangements with school bus body manufacturers, with the underlying International medium-duty chassis providing the platform for school bus body installations. For school district fleet operators with MV-based school bus inventory, calibration considerations span both standard MV medium-duty calibration scope and school-bus-specific operational reality — twice-daily cold-start patterns, route operational tempo, summer downtime stress, and the broader school transportation operational reality covered in our school transportation industry expertise. The calibration approach for school bus MV chassis draws on both broader Cummins B6.7/L9 platform expertise and the school transportation duty cycle expertise we maintain across the school bus fleet population.
