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The Fuller Manual Transmission Reverse Switch is designed to restore proper backup lamp function in Eaton Fuller heavy-duty transmissions. This threaded plunger switch installs directly into the transmission case, utilizing a calibrated contact point that closes the electrical circuit when the shift rail moves into the reverse position. To withstand the harsh environment of a commercial driveline, the Fuller 22940 features a sealed metal housing that prevents gear oil from contaminating the internal contacts or corroding the terminals. Its thread pitch and depth are machined to OEM specifications, ensuring the switch seats fully without binding or stripping the aluminum case threads. Replacing a faulty switch with this direct-fit component ensures that reverse lights operate reliably during docking maneuvers.
| Brand | Part Number |
|---|---|
| FUL22940 | |
| MERITOR | M1322940 |
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