The Rehlko KDI‑TCV 3404U4/22C is a Stage IV / Tier 4 Final configuration within Rehlko’s KDI 3404 family, rated at 90 kW (121 hp) @ 2200 rpm with 480 Nm @ 1400 rpm. That torque-first profile suits equipment that does most of its work under load in the mid‑range, where controllable pulling power and steady-duty performance matter more than high engine speed.

This variant is documented for EU Stage IV / US Tier 4 Final compliance and uses Rehlko’s U4 emissions management package (EGR + DOC + SCR). For OEMs, the advantage is a clearly defined engine and emissions architecture that supports predictable integration and compliance planning. For operators and service teams, accurate variant identification helps keep parts ordering and maintenance aligned across the engine’s lifecycle — particularly important where multiple KDI 3404 variants exist with similar naming but different calibrations.

Before ordering, confirm the full installation package — cooling capacity, exhaust and aftertreatment routing, mounting points, and electrical interfaces — against the machine’s duty cycle. Share your application and engine plate details and we’ll help confirm the correct match.