TRANSMISSION RESEARCH

International T14 — Transmission Authority & Buyer Guide

a 14-speed automated manual transmission within the S13 Integrated Powertrain. Confirm the full model code, control system, ratios, ratings and installed application rather than relying on a speed count or family nickname.

Exact family and transmission type

International T14 is a 14-speed automated manual transmission within the S13 Integrated Powertrain. It is not the S13 engine or the entire package.

Versions and era boundaries

Use current S13/T14 product material and verify production/model-year availability on the truck.

Published ratings and architecture

Gear architecture, ratings and integrated controls are package- and model-specific. Use the data sheet for the exact model; a family maximum does not establish the limit of the installed unit or truck.

Engine and truck relationships

T14 is offered with S13 in qualified LT, RH and HX configurations; the model/year/build defines availability.

Tag, model-code and software verification

Record T14 tag, software, clutch/actuator history, factory line-set and paired S13 serial.

Integration and later-swap cautions

Treat engine, transmission and aftertreatment as an integrated system; later component changes require explicit proof.

Low-speed, grade and duty-cycle questions

Confirm on-highway versus severe-duty programming, low-speed control, grade, gross weight and PTO needs.

Service evidence and road-test scope

Request fluid/service records where applicable, clutch and actuator history for AMTs, control-module fault reports, calibration history and repair invoices. Evaluate engagement, shifts, reverse manoeuvring and warnings in a safe, suitable road test with qualified follow-up for abnormal behaviour.

Reviewed and verification limit

Reviewed September 4, 2026. Torque, gross-combination, PTO and application limits apply only to exact published models and configurations. This page is not a fitment or operating approval.

Verify the individual truck

Build information, component tags, service records, diagnostics and a qualified inspection take priority over general family-level guidance.

Sources & Technical References

Primary manufacturer and government resources for continuing configuration-specific research.

International — S13 Integrated Powertrain