Description
Overview:
This 34 mm (1.34 in) Piston Assembly is a non-genuine replacement for Stihl small two‐stroke engines, commonly found in tools such as the FS 80 brushcutter and HS 80 hedge trimmer. Built around a lightweight aluminium alloy piston with steel piston rings, gudgeon pin, and circlips, it restores compression and smooth running when the original top end is worn or damaged. The 34 mm (1.34 in) diameter matches the original specification used across many 4137‐series Stihl engines, helping to maintain reliable starting, power, and fuel efficiency. Supplied as a complete assembly for straightforward servicing, it replaces the Stihl reference 4137 030 2010 and can be used where 350 070 has been quoted. Suitable for trade users and DIY maintenance on a wide range of handheld machines.
Key Features:
- Precision 34 mm (1.34 in) piston for correct fit and reliable sealing in compatible cylinders.
- Durable aluminium alloy piston with steel rings and gudgeon pin for long service life.
- Complete assembly with rings, pin, and circlips to simplify installation.
- Helps recover lost compression, power, and throttle response after scoring or wear.
- Non-genuine alternative offering dependable performance at a sensible cost.
- Made to close tolerances to mirror original dimensions and balance.
- Suitable for a wide range of Stihl handheld tools using 34 mm top ends.
- Practical to fit with standard workshop tools; ideal for both professionals and home users.
- Supports smoother idling, easier starting, and consistent cutting or trimming performance.
- Matches Stihl reference 4137 030 2010 to aid part identification.
Typical Applications:
Used during routine overhauls or repairs of Stihl two-stroke engines showing low compression, hard starting, poor power, or excessive fuel use. Suitable for restoring performance in brushcutters, hedge trimmers, backpack brushcutters, blowers, pole pruners, and Kombi engines that use a 34 mm (1.34 in) piston.
Also known as:
Piston kit, 34 mm piston set, engine piston assembly, top-end kit, cylinder piston, rebuild piston, piston and ring set, small engine piston.
Fits Models:
BG 75, BG75, FC 75, FC 85, FC75, FC85, FH 75, FH75, FR 85, FR 85 T, FR85, FR85T, FS 75, FS 80, FS 80 R, FS 85, FS 85 R, FS 85 RX, FS 85 T, FS75, FS80, FS80R, FS85, FS85R, FS85RX, FS85T, HL 75, HL 75 K, HL75, HL75K, HS 75, HS 80, HS75, HS80, HT 70, HT 75, HT70, HT75, KA 85 R, KA85R, KM 85, KM 85 R, KM85, KM85R, KR 85, KR85, KW 85, KW85, SP 80, SP 80 K, SP 81, SP 85, SP 85 K, SP80, SP80K, SP81, SP85, SP85K
Alternate Part Numbers:
4137 030 2010, 41370302010
Product Specifications
| L&S Part No. | 350 070 |
|---|---|
| Unit of Sale | 1 |
| Size | 34mm |
| Machine Type | Brushcutters, Hedgetrimmers, Pole Pruners |
| Fits Brands | Stihl |
| Key Features | - Precision 34 mm piston for Stihl two-stroke engines - Aluminium alloy piston with steel rings for durability - Complete assembly simplifies installation - Matches Stihl reference 4137 030 2010 - Suitable for FS 80, HS 80, and more models |
| Fits Models | FS75, FS80, FS85 | HS75 |
