Makita 424611-1 Spare Part - CONNECTOR B
Genuine Makita part 424611-1 — Connector B (oil-feed connector) — direct replacement for the oil/tank feed on select Makita electric chainsaws. This small molded connector links the oil tank to the oil-feed assembly and is the exact fit called out in Makita’s parts diagram for the UC3551A series.
Fits models you’ll commonly see it used on: Makita UC3551A (350 mm) and UC4051A (400 mm); it is also referenced for the ES-174TLC variant in parts lists. If the original connector is cracked, clogged or leaking it can cause poor bar lubrication — replacing the connector restores proper oil flow.
Part details: listed as “CONNECTOR B” (part no. 424611-1) in the oil tank/feed assembly; sold as a single replacement piece and designed to mate with the corresponding connector A and the oil tank cap/rod assembly. Because it’s a small molded component used in the oil line, visually inspect for hairline fractures or hardened/brittle material when diagnosing a lubrication fault.
If you’re repairing the oil delivery on one of these chainsaws, this genuine Makita spare parts item is the exact-match connector you’ll need to replace a failing feed fitting and get the tool back to reliable lubrication. This is one of those simple power tool parts that often fixes oiling issues quickly.
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Compatible models this part will fit:
