... key components 2, improved circuit, more stable speed control Cummins Engine Speed Control Unit 3044196Description: EFC3044196 speed controller is composed by full electronic ... ,MX341-A, SX440, SX440-A, SX440-T, SX460, SX460-A.3. Leroysomer AVR: R230, R438, R448, R449, SSAYEC432.4. Marathon AVR ...