Can carriers still get International build slots before EPA 2027?

International says build slots remain available for fleets ordering ahead of the EPA 2027 emissions standards, but the window is narrowing as mid-2026 approaches.

Can fleets still secure prebuy build slots before EPA 2027?

Yes, according to International's David Hillman, speaking at ACT Expo in May 2026. The OEM is still accepting orders for pre-EPA-2027 units, though Hillman noted the risk of waiting increases as production schedules fill. The EPA 2027 standards take effect for engines manufactured after January 1, 2027, creating a hard cutoff for fleets seeking to avoid the first model year of the new NOx regulations.

What is International's S13 integrated powertrain?

International is positioning its S13 integrated powertrain as a key offering for fleets navigating the transition. Hillman discussed the S13 during the ACT Expo podcast, though specific details on horsepower ratings, torque curves, fuel economy claims, or service intervals were not disclosed in the available material. The S13 represents International's answer to integrated powertrain strategies from competitors like PACCAR and Daimler, where the OEM controls engine, transmission, and axle calibration.

Why prebuy capacity matters now

The 2027 EPA emissions standards tighten NOx limits to 0.05 grams per brake horsepower-hour for highway engines: a 75% reduction from the current 0.20 g/bhp-hr standard. First-year compliance hardware typically carries higher service costs and unknown durability until field data accumulates. Fleets ordering pre-2027 units lock in proven aftertreatment architecture and avoid early-adopter risk, but only if build slots remain open.

Historical prebuy cycles, 2007, 2010, saw production backlogs stretch six to nine months as order books filled. Carriers who delayed orders past mid-year often paid premiums on the used market or accepted 2027-compliant units by default.

What International didn't say

Hillman's comments at ACT Expo did not include current lead times, remaining slot counts by model, or pricing deltas between 2026 and 2027 model-year units. International has not publicly released S13 fuel economy data, warranty terms, or comparative maintenance costs versus the outgoing A26 engine. The OEM also did not specify whether S13 production will continue under EPA 2027 standards or transition to a revised emissions package.

International posted a third straight quarterly loss in Q1 2026, including $180 million in plant-sale charges, raising questions about production capacity and capital available for tooling updates required by the new emissions standard. The financial pressure may limit the OEM's ability to extend prebuy production runs if demand spikes.

What this means for small fleets

Fleets ordering now face a choice: lock in 2026 model-year units with known service costs and parts availability, or wait for 2027-compliant trucks that may offer better fuel economy but carry first-year risk. The decision hinges on replacement cycles, a fleet planning to hold trucks seven years will run 2027-compliant units through the warranty period and into the secondary market, where resale value depends on how well the new emissions hardware holds up.

For owner-operators and small fleets without dedicated shop staff, the calculus tilts toward proven technology. A 2026 A26 or S13 uses aftertreatment components with established reman channels and technician familiarity. A 2027 engine introduces new sensors, software, and potentially revised DEF dosing that rural shops may not be equipped to diagnose until training and tooling catch up.

Fleets should confirm build-slot availability directly with their International dealer and request written delivery dates. Verbal commitments do not hold if production schedules slip or order volume exceeds capacity. If a dealer cannot guarantee delivery before year-end 2026, the prebuy window has likely closed.