wp20562 - Genuine Eaton Transmission Push Button Shift Selector - 1 - wisentpartscenter.com

Description

Genuine Eaton Fuller 3872946C91 Transmission Push Button Shift Selector is the driver's electronic control interface for compatible Eaton automated manual transmissions. It allows the driver to select Reverse, Neutral, Drive, Manual, and Low modes, while the up/down buttons provide manual gear selection when needed. Eaton identifies 4306043 in its transmission parts catalogs as a Pushbutton Assembly / Pushbutton Shift Selector.

Verify fitment with us before ordering to ensure the correct part for your application.

Purpose of the Part

The 3872946C91 is how the driver tells the Eaton automated transmission what operating mode is needed. In Drive, the transmission handles gear selection automatically; Manual lets the driver choose shifts with the up/down buttons, while Low changes the shift strategy to provide stronger engine braking and low-speed control.

Issue Symptoms / When to Replace

A problem with the shift selector can show up as buttons that stop responding, a transmission that will not accept the selected mode, intermittent gear-selection commands, or a SERVICE light that remains on or flashes. A SERVICE light does not automatically mean the selector itself has failed because Eaton transmission faults elsewhere in the system can also activate that warning.

Brand Information

Eaton has more than 100 years of experience with commercial-vehicle transmissions and produces manual and automated transmission systems for heavy-duty applications. The 3872946C91 control is documented directly in Eaton Fuller parts catalogs as the pushbutton shift-control assembly used across several AutoShift, UltraShift, and UltraShift PLUS transmission configurations.

Installation Notes

Disconnect the vehicle battery before removing or installing the electronic shift control; Eaton specifically calls for battery disconnection when servicing electronic transmission components.

How to Identify an OEM Part

A genuine 3872946C91 can be identified by the EATON logo molded into the front housing and the factory Eaton label on the rear showing part number and the unit revision.

Why Buy 3872946C91 from Wisent Parts

  • ⏱️
    Fast shipping
    Orders before 12PM EST ship same business day.
  • 🛡️
    180-day warranty
    All parts covered from delivery date.
  • ↩️
    Easy returns
    30-day returns.
  • ✅
    Verify fitment
    Send VIN/ESN and we’ll confirm.

Shop with confidence

Warranty & Return Information
Warranty Information

Wisent Parts offers a 180-day warranty on all parts from the date of delivery. This warranty covers orders placed directly through our website. If a part fails during this period, we’re here to help - whether it’s a replacement, repair, or refund. For full details, refer to the Warranty page.

Return Information

Wisent Parts accepts returns within 30 days of delivery. All returns are subject to a restocking fee. To qualify, parts must be unused and in their original condition. For full return instructions and restocking fee details, please refer to the Returns page.