# BF25-BF50 — Outboard motor service specifications by brand and model

For BF25-BF50, brand is Honda; spark plug is NGK BPR6ES; gap is 0.028-0.031", recorded from its source on 2026-08-05.

- **Brand:** Honda
- **Model / range:** BF25-BF50 _(verified: appears in the quote below)_
- **Spark plug:** NGK BPR6ES _(verified: appears in the quote below)_
- **Gap:** 0.028-0.031" _(verified: appears in the quote below)_

## What the source says

> BF25-BF50 | NGK BPR6ES | 0.028-0.031"

## Source

- https://seasierra.com/blogs/outboard-101/outboard-spark-plug-replacement-the-right-plugs-and-gaps

Last verified: 2026-08-05. Review by: 2028-08-04.
Part of [Outboard motor service specifications by brand and model](https://referencesource.org/outboard-motor-service-specs/).