# 051 — Stihl chainsaw chain and bar specifications by model

For 051, bar length is 21"; pitch is .404"; gauge is 1.6mm; drive links is 68; stihl chain part number is 3946/68, verified against its source on 2026-08-04.

- **Model:** 051
- **Bar length:** 21"
- **Pitch:** .404"
- **Gauge:** 1.6mm
- **Drive links:** 68
- **STIHL chain part number:** 3946/68

## What the source says

> 07S,08,08S,050, 051,075,076,084, 088,E30,MS880 | 17" 21" 25" 30" 36" | .404" .404" .404" .404" .404" | 1.6mm 1.6mm 1.6mm 1.6mm 1.6mm | 60 68 80 91 108 | <https://www.lsengineers.co.uk/catalog/product/view/id/32740> 3946/60 <https://www.lsengineers.co.uk/catalog/product/view/id/32744> 3946/68 <https://www.lsengineers.co.uk/catalog/product/view/id/32747> 3946/80 <https://www.lsengineers.co.uk/catalog/product/view/id/32751> 3946/91 <https://www.lsengineers.co.uk/catalog/product/view/id/32754> 3946/108

## Source

- https://www.lsengineers.co.uk/advice-centre/stihl-chain-selector

Last verified: 2026-08-04. Review by: 2028-08-03.
Part of [Stihl chainsaw chain and bar specifications by model](https://referencesource.org/small-engine-parts/).