For Stihl

Stihl BG86 / BG56 Air Filter Service Kit

4.5 (76)

An HD2 air filter with a plug, fuel filter and two primer bulbs — the annual service for Stihl BG56, BG66, BG86 and SH86 blowers.

$7.99price at last check, Sep 27, 2026

Fits models

BG56
BG66
BG86
BG86C
SH86
SH86C

Replaces: 4241 140 4404, 4241 140 4403, 4241 140 4400

Two filter styles exist; compare with your original.

About this kit

A blower that breathes through a dirty filter runs rich, loses power and fouls its plug. Once a season, swap the filter, plug, fuel filter and bulb together; it takes five minutes and saves the carb from grit.

The filter replaces Stihl 4241 140 4404, 4403 and 4400. Stihl has used two filter shapes on these blowers, so compare your old one with the photo before ordering.

HD2 filter replaces 4241 140 4404 / 4403 / 4400
Fits BG56, BG66, BG86, SH86
Plug, fuel filter and two bulbs included
Five-minute annual service

In the box

1 HD2 air filter
1 spark plug
1 fuel filter
2 primer bulbs

For machine brand	Stihl
Replaces	4241 140 4404, 4241 140 4403, 4241 140 4400
Items in the kit	4
Kit options	1
Rating	4.5 / 5 from 76 reviews
Category	Fuel Lines, Primer Bulbs, Filters & Carb Tools