Description
Overview:
This Suction Chamber Diaphragm is a Genuine Stihl OEM part designed for the suction section of the chainsaw's fuel system, helping to maintain steady vacuum and fuel delivery for smooth running. Built from a flexible, durable elastomer with fabric reinforcement, it withstands repeated pulses and exposure to petrol/oil mix. It is made for Stihl chainsaws, including the 030 and 031, and is engineered to match the original profile and porting for reliable sealing and operation. Using the correct diaphragm restores consistent idling, acceleration, and overall performance after wear or age-related hardening of the old part. Manufacturer Part Number (MPN): 1114 121 4600. Genuine Part for assured fit and compatibility with the specified Stihl models.
Key Features:
- Genuine Stihl OEM component for accurate fit and function
- Maintains proper suction/impulse in the fuel system for stable running
- Durable elastomer with fabric reinforcement for long service life
- Helps cure hard starting, poor idle, and flat spots caused by a tired diaphragm
- Precisely cut to align with ports and screw holes in the chamber body
- Resistant to the petrol/oil mix typically used in two‐stroke engines
- Supports reliable cold and hot starts after routine maintenance
- Direct replacement; no modifications required
- Suitable for workshop rebuilds and routine servicing
- Backed by Stihl specification for material quality and thickness consistency
Typical Applications:
Replacement during carburettor or suction chamber service on Stihl chainsaws to restore correct fuel metering and vacuum. Ideal when refurbishing older machines, addressing erratic idle, loss of power under load, or inconsistent throttle response. Used by professional arborists, landscapers, and DIY users maintaining fleet or personal saws.
Also known as:
Carburettor diaphragm, pump diaphragm, impulse pump diaphragm, suction membrane, fuel pump membrane for chainsaws, vacuum chamber diaphragm, Stihl pump diaphragm.
Fits Models:
020, 020T, 030, 031, 032, MS 200, MS 200 T, MS200, MS200T
Alternate Part Numbers:
1114-121-4600, 11141214600
Product Specifications
| L&S Part No. | 1114 121 4600 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Stihl |
| OEM No. | 11141214600 |
| Unit of Sale | 1 |
| Applications | 020, 020T, 030, 031, 032, MS 200, MS 200 T, MS200, MS200T |
| Machine Type | Chainsaws |
| Fits Brands | Stihl |
| Fits Models | MS200, MS200T | 030, 031 | 020, 020T | 032 |
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