What this tooth is, and what it is not
423-70-13114 is the centre tooth of the Komatsu WA380 bucket in the bolted monoblock line — the catalogues call it a monoblock tip or a unitooth. The casting has a socket that seats over the lip nose and three bolt holes through the side. It is not a pin-on tooth: there is no bore for a pin, no groove for a retainer and nothing to shim. Two suppliers' tables print the same bolt-and-nut pair against this row, 09218-12219 with 01643-32260, and three bolts per tooth.
That matters at ordering time. A WA380 quotation written with a pin and a retainer was written from an excavator template, and the parts will not fit anything on the machine. It matters at fitting time too: a bolted monoblock cannot be tightened up against a worn nose the way a pin-on tooth can, so the base has to be checked when the set goes on, not when the first tooth starts moving.
Why the weight is a range and not a number
| Catalogue | 423-70-13114 | Note printed on the row |
|---|---|---|
| BDI Wear Parts | 17.50 kg | WA380M, three-hole monoblock |
| HCE Parts | 17.50 kg | WA380-1 / WA380-3, bolt 09218-12219, nut 01643-32260, three bolts |
| AzuLong | 17.20 kg (37.9 lbs) | Quarry and aggregate loading, HRC 48–52 |
| SJ-GET | 17.0 kg / 17.6 kg | Spec block and own table disagree on the same supplier's site |
| Siderwin | 16.70 kg | 38 mm version, WA380M |
0.9 kg is 5 percent of a tooth — which is 27 kg on a thirty-piece order and real money on air freight. It is also the honest answer to "what does it weigh": the aftermarket castings differ, so we weigh each lot before packing and put the weighed figure on the packing list. If you need the figure before you book freight, ask for it.
Ordering the set, not the tooth
A WA380 bucket is not thirty of the same number. The centres are 423-70-13114; the corners are 423-70-13144 (left) and 423-70-13154 (right), wider castings at roughly 23 kg with four bolts each. Because most lists print both corners at the same weight, they look like a matched pair on paper and get ordered as two of one number — which fits one side of the bucket only. Read the number stamped on the old corner, or photograph both corners before ordering.
If the lip carries a replaceable base rather than a cast nose, the base for this class is 423-847-1111, a three-hole bolt-on adapter published at 15.0 kg, with 423-847-1211 as the two-strap weld-on alternative. The tooth is the same either way; the fit is not. Send a photo of the lip edge and we match the base to what is actually on the machine.
FAQ
Q: What is the Komatsu 423-70-13114 tooth?
A: The centre tooth of the WA380 bucket in the bolted monoblock line — a three-hole casting, published at 17.50 kg in two catalogues and between 16.7 and 17.6 kg across five. No pin, no retainer.
Q: Which bolts hold it?
A: Bolt 09218-12219 with nut 01643-32260, three per centre tooth. Corners take four. We quote the fasteners on the same line as the castings.
Q: Does it fit a WA380-8?
A: The rows we read print WA380-1, WA380-3 and WA380M (38 mm), and the serial ranges published for the matching corner stop at WA380-7. For a -8, send the serial and a photo of the socket — we check the pattern rather than assume the line continues.
Q: Is 423-70-13113 the same tooth?
A: No. 423-70-13113 is the heavier centre published against WA350, WA400, WA420 and WA450 at 20.50 kg. One digit in the suffix, about 3 kg in the casting.
Sources
Numbers, weights, bolt and nut pairs, bolt counts and machine coverage on this page come from five aftermarket catalogues and parts lists read in October 2026 — BDI Wear Parts, HCE Parts, Siderwin, AzuLong and SJ-GET — plus a Komatsu parts retailer's fitment list for the related corner tooth. Komatsu and the part numbers referenced are the property of their respective owners and are used here for fitment reference only. We hold no Komatsu genuine catalogue page for this number, so nothing here is presented as genuine-parts data, and no price is published: these are quotation items.