Electronic Control Unit

Electronic Control Unit #51678591 gathers, processes and transmits real-time data from various sensors on your machine. By managing onboard functions, it ensures the proper, efficient and safe performance of your equipment.

Compatible equipment

This part fits COMPACT WHEEL LOADER STD EVO, ZB - TIER 4, COMPACT WHEEL LOADER STD, TC - TIER 4, COMPACT WHEEL LOADER STD, ZB - TIER 4, COMPACT WHEEL LOADER STD, ELECTRIC, ZB, COMPACT WHEEL LOADER STD EVO, ZB - STAGE V, COMPACT WHEEL LOADER HS, ZB - TIER 4, COMPACT WHEEL LOADER HSP, ZB - STAGE V - MY23, COMPACT WHEEL LOADER HSP, ZB - TIER 4 - MY23, COMPACT WHEEL LOADER HSP, ZB - TIER 4, COMPACT WHEEL LOADER HPS EVO, XR - TIER 4, COMPACT WHEEL LOADER HSP EVO, ZB - STAGE V, COMPACT WHEEL LOADER HSP EVO, ZB - TIER 4, COMPACT WHEEL LOADER HSP, XR - STAGE V - MY23, COMPACT WHEEL LOADER STD, XR - STAGE V - MY23, COMPACT WHEEL LOADER STD, XR - TIER 4 - MY23, COMPACT WHEEL LOADER STD, ZB - STAGE V - MY23, COMPACT WHEEL LOADER HPS, XR - TIER 4, COMPACT WHEEL LOADER HSP, XR - STAGE V, COMPACT WHEEL LOADER HSP, ZB - STAGE V, COMPACT WHEEL LOADER STD, XR - STAGE V, COMPACT WHEEL LOADER STD, XR - TIER 4, COMPACT WHEEL LOADER STD, ZB - STAGE V, COMPACT WHEEL LOADER HS, ZB - STAGE V, ELECTRIC FOUR WHEEL DRIVE, MINOTAUR COMPACT DOZER LOADER, REGULATED (NA) - MY25, REGULATED NA - STAGE 5 - MY26, REGULATED STAGE V (NA) - MY25, SKID STEER LOADER - S5 NA, SKID STEER LOADER - TIER 4F - NA, REGULATED NA - STAGE 5- MY26, REGULATED ROW - TIER 3 - MY26, REGULATED NA, TIER 4 - MY26, REGULATED NA - TIER 4 - MY26, REGULATED NA STAGE 5 - MY26, REGULATED STAGE V (NA), SV340B-RGV-AP, COMPACT TRACK LOADER - TIER 4F - NA, COMPACT TRACK LOADER including models 121F, 121G, 12EV, 21F, 221F, 221G, 321F, 321G, 421G, 580EV, CL36EV, DL550, SR175B, SR210B, SR220B, SR240B, SR250B, SR270B, SV185B, SV250B, SV280B, SV300B, SV340B, TR270B, TR310B, TR320B, TR340B, TV370B, TV380B, TV450B, TV620B.

Frequently asked questions

What is the part number?

The manufacturer part number is 51678591.

Is this a genuine OEM part?

Yes. This is a genuine CASE Construction part.

Will this fit my machine?

See the compatible equipment list above. If your model is not listed, call us with your machine's serial number and we can confirm.

Where does this ship from?

Southeastern Equipment Company ships parts nationwide from our US warehouse. Orders placed before 2 PM ET typically ship same day.

Ships nationwide. In-stock parts ordered before 2:30 PM ET ship the same business day. Your exact shipping cost and delivery estimate are calculated at checkout from your ZIP code and the part’s size and weight; oversized and truck-freight items may need extra transit time and freight charges.

Free branch pickup is also available across Ohio, Indiana, Michigan, and Kentucky — just choose it at checkout.

30-day returns. New, unused parts in original packaging may be returned within 30 days. Some items — including electrical, special-order, and direct-from-supplier parts — are non-returnable. See our full return policy.