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Parts Distributing Company · Electrical & Lighting
MBJ-4385
In stock · ships from Knoxville
This is a junction block kit used to connect and distribute multiple electrical circuits in heavy-duty trucks, typically under the hood or on the frame rail.
Confirm the part fits before you buy. Applications and interchange numbers are researched and audited per part.
We don't publish fitment for this part yet. Rather than guess, get it confirmed against your truck in under a minute.
It provides a solid, insulated stud-and-nut terminal arrangement that keeps wiring organized and protected from vibration and moisture. You would replace it when the original block is cracked, corroded, or when adding new circuits like lighting or accessories. The kit generally includes the block, washers, and nuts needed for a clean installation.
Part Number: MBJ-4385
BLOCK KIT JUNCTION BOX
Vendor: Parts Distributing Company
Dealer: KP Services Crossville
Compatibility, alternatives, and more
Parts commonly needed alongside electrical & lighting
