Diode Semiconductor

Genuine JLG OEM part 3990001 – Diode Semiconductor.

Fits models: 30e, 35e, 40e, 45e, n35e, n40e, E400AJPnarrow, E400Anarrow, 120HX, 40ic, 45ic, E400AJP, M400AJP, M400AJPnarrow, 40H, 40H+6, 46H, 3369e, 3969e, E450AJ, 100SX, 110SX, 110SXJ, 120SXJ, 80HX, 80HX+6, E40AJP, E40AJPnarrow, E45A, E45AJ, M40AJP, M40AJPnarrow, M45A, M45AJ, 600SC, 660SJC, 1100S, 1100SJP, E400A, E450A

Found in 41 JLG parts books.

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.