Product Overview

- Aftermarket diaphragm carburetor manufactured by Tianjin Stable Technology Co., Ltd. marketed for Husqvarna 440 chainsaw compatibility (also described alongside Stihl MS381 replacements).

- Factory-direct supply with ISO9001 certification and OEM/ODM services; produced in a specialist carburetor facility with 15+ years’ experience.

Product Features

- Diaphragm-style carburetor with aluminum-alloy body, stainless-steel needles/jets, US-grade meter diaphragm and Walbro-equivalent pump diaphragm/gaskets.

- Components include input fuel filter screen, original inlet-needle check valve, updated O‑ring seal for dustproofing and easier starts.

- Patented easy-idle adjustment pin for on-running idle tuning and a fuel‑saving oil/fuel feed design that claims ~25% fuel savings versus conventional units.

- Fully tested before shipment; customizable packaging and branding options.

Product Value

- Reliable, high-performance replacement that restores smooth running, reduces stalling and extends engine life through improved sealing and filtration.

- Cost-effective factory-direct sourcing with large production capacity (10 assembly lines, up to millions annually) that supports competitive pricing and supply stability.

- Simplifies maintenance (easy idle adjustment, readily available service parts) and lowers operating cost via improved fuel economy.

Product Advantages

- Long industry pedigree: manufacturer with 15+ years in carburetor production, experienced R&D team and strict quality systems (ISO9001, TS16949 tools, automation).

- High build quality: durable materials, precise components, and Walbro-matching diaphragms/needles for reliable performance.

- Practical user benefits: improved dust sealing (updated O‑ring), one-way inlet valve reliability, and an easy-to-adjust idle feature for field tuning.

- Pre-shipment testing and robust export packaging to protect parts in transit.

Application Scenarios

- Designed for small gasoline engines and handheld outdoor power equipment such as chainsaws (Husqvarna 440, Stihl MS models), brushcutters, hedge trimmers, sprayers and similar tools.

- Also suitable for other small-engine applications where diaphragm carburetors are used (portable power equipment, light construction tools, model engines and repair/aftermarket replacement projects).