Mercedes Benz Heater Servo Motors
The Mercedes heater servo
is a vacuum-controlled
on/off and a
multiple pulse width-controlled valve stem. The servo responds to the temperature control resister chain. It has a small electric motor that routes vacuum to control flaps, moves variable resister to send a signal to the amplifier, and opens and closes the hot water valve. The motor in the servo receives a voltage signal from the amplifier that is located behind the glove box in most Mercedes applications. The factory heater servo has a plastic body that cracks. Our servos have a machined aluminum body which will not crack and will provide a longer life than factory replacement servos. Not only do our servos last longer that the factory replacement unit they also cost less. If you'd like to order one of our heater servos please call 877-525-5233 or email us at sales@mr-auto-parts.com.
Our Mercedes heater servos come with a three year warranty against defects in material or workmanship.
Looking for the Heater Servo Amplifier? Click Here
Mercedes-Benz Heater Servo Application Guide
All Units $ 359.99 plus Refundable $ 150.00 Core Deposit
Free Shipping on All Servos
| Model | Years | OEM # | Part # |
| 280 CE | 1978 - 86 | 000 830 03 84 | 520-840 |
| 280 SE | 1977 - 80 | 000 830 06 84 | 520-842 |
| 300 CD | 1977 - 86 | 000 830 03 84 | 520-840 |
| 300 D | 1977 - 86 | 000 830 03 84 | 520-840 |
| 300 SD | 1977 - 80 | 000 830 06 84 | 520-842 |
| 300 SE | to 1981 | 000 830 06 84 | 520-842 |
| 380 SL | to 1981 | 000 830 06 84 | 520-842 |
| 380 SLC | to 1981 | 000 830 06 84 | 520-842 |
| 450 SE | 1976 - 77 | 000 830 06 84 | 520-842 |
| 450 SEL | 1976 - 80 | 000 830 06 84 | 520-842 |
| 450 SL | 1977 - 80 | 000 830 06 84 | 520-842 |
| 450 SLC | 1976 - 80 | 000 830 06 84 | 520-842 |
Call us toll free at 877-525-5233 or email us at info@mr-auto-parts.com to order you servo or to let us help on assuring that you get the right part at the right price.