Designed to keep each fan speed working as intended, the Four Seasons switch 20510 is an HVAC Blower Motor Resistor / Switch that regulates the current sent to the blower motor so the HVAC fan can run at its different speed settings. It fits many vehicles, among them the 2011-2018 Ram 1500, the 2009-2010 Dodge Ram 1500 and the 2011-2018 Ram 2500. See the Buyer's Guide tab for the full list.
Four Seasons catalogs this part as an HVAC Blower Motor Resistor, and it is also listed under the Switch part type, so you may find it under either name.
- Vehicle-specific applications: a direct-fit replacement for the listed applications.
- Quality contacts: designed to provide proper electrical conductivity.
- Precision engineered: engineered with precision for the vehicles it is cataloged to fit.
- OE-style connectors: connectors styled like the originals for a factory-style electrical connection.
Four Seasons says it engineers and tests its products with years of trouble-free operation in mind, and it draws on more than 50 years of mobile A/C experience.
A blower motor resistor may need replacing if the fan runs only on certain speeds, such as high only, or does not run at all. A blower motor, control switch or wiring fault can cause similar symptoms, so diagnose the cause before replacing. If the resistor is the failed part, the 20510 replaces it.
Interchange: 4P1621 · 68048900AA · 68048900AB · 973029 · 973189 · 1712195 · A06860 · MT1872 · SW11342C · SW11385 · SW11385C · JA1743
This part cross-references / interchanges with the following part numbers:
4P1621, 68048900AA, 68048900AB, 20510, 973029, 973189, 1712195, A06860, MT1872, SW11342C, SW11385, SW11385C, JA1743
