Honda BF75 BF90 BF135 BF150 Outboard Starter Motor 1.4kW PMGR | Replaces 31200-ZY9-003 & ZY6-003

Swap-in starter for the Honda BF75, BF90, BF135 and BF150 four-strokes. 12 volt, planetary reduction. It stands in for 31200-ZY9-003 and 31200-ZY6-003, and the -H01 and -A0031 suffixes after them.

OE Reference Numbers

Main number: 31200-ZY6-003

Also listed under: 31200-ZY9-003, 31200-ZY9-H01, 31200-ZY9A-0031

What buyers type: Honda BF90 starter motor, Honda BF135 starter, BF150 starter motor, 31200-ZY6-003 starter, 12V outboard starter, 9 tooth starter drive, high torque marine starter

Reference Specifications

System voltage: 12V, as stated in the product title. Power: 1.4kW

Type: planetary gear reduction (PMGR), reduction-type flange

Pinion: 9 teeth. Catalog publishers list that for both number families, not Honda.

Rotation: clockwise, seen from the drive end.

Honda never published either figure. Put them against your old unit before you pay.

Fitment and Purchase Checks

Fitting? EFI models only. BF75D and BF90D from 2007 on, BF135 and BF150 from 2004 on. Same starter body, two number families. Carbureted BF75 and BF90 from before 2007 take a different starter. Do not order this one for those. Still, check the number on your old starter first. Honda carried several part numbers across production runs and they are not all identical. Now the honest part, because we'd rather say this than deal with a return. Gear and flange dimensions on this unit differ from the smaller BF20 / BF50 series starters. It will not interchange with those, so if you own one of the smaller engines, this is not your part. Match the removed unit against this one before you install. Teeth count, rotation, flange pattern, terminal position, all of it. Takes minutes and it's cheaper than guessing wrong.

Why This Unit

The short version: this is the high-torque reduction starter for Honda's mid and higher horsepower four-strokes. 12V at 1.4kW, 9 tooth pinion, clockwise rotation, reduction-type flange. That extra torque matters on these bigger engines, especially on a cold morning start when a tired original starter just clicks.

For Buyers and Distributors

Shops and distributors: 20 pieces minimum, 10-15 days out, 6 month warranty. RoHS, REACH and ISO9001 papers on file. Tell us the engine model, the number off your old starter, quantity and port, we quote back same day.

Aftermarket notice

This listing is an aftermarket replacement part supplied by StarterStock. We are not affiliated with, authorized by, or endorsed by any original equipment manufacturer. OE numbers, model names and brand names are quoted for identification and fitment matching only, and remain the property of their respective owners.