Products Description
Chainsaw Twist Lock Spring – Genuine Replacement for Stihl, Husqvarna & More
Secure Cover Fastener & Locking Spring for Chainsaws
A chainsaw twist lock spring is a small but critical component used in various parts of a chainsaw. It most commonly refers to the spring mechanism inside a quick-release twist lock that secures covers (like the top shroud or air filter cover) , or the locking spring mechanism in fuel and oil caps . This replacement part ensures your saw's covers and tank caps remain securely fastened against vibration and movement during operation. Available for a wide range of Stihl, Husqvarna, and other chainsaw models, it restores reliable function to essential safety and maintenance components.
Technical Profiles & Materials
Secure Quarter‑Turn Locking – Provides a tool‑free, vibration‑resistant fastening for covers and panels, keeping them firmly in place during operation .
Durable Materials – Constructed from hard‑wearing polymer for twist‑lock fasteners or durable spring steel for locking springs, designed to withstand fuel, oil, heat, and vibration .
Direct OEM Replacement – Available as genuine Stihl or Husqvarna parts, ensuring precise fit, correct tolerances, and consistent engagement .
Wide Model Compatibility – Fits a comprehensive range of Stihl and Husqvarna chainsaws, including professional and classic models .
Technical Specifications
| # | Parameter | Specification |
|---|---|---|
| 1 | Twist Lock Type | Tool‑free quarter‑turn fastener |
| 2 | Compatible Stihl Models | MS651, MS661, MS500i, MS380, MS381, MS382, 028, 038, 030, 031, 042, 056 |
| 3 | Compatible Husqvarna Models | 365, 570, 135, 340, 345, 346XP, 350, 357XP, 359, 372XP, 385, 390XP, 435, 445, 450, 455 Rancher, 550XP, 560XP, 562XP |
| 4 | Stihl OEM Twist Lock Part No. | 1144 141 2300 (MS651/661) / 1113 140 9200 (028/038/MS381) |
| 5 | Stihl OEM Cap Springs | 0000 350 0525 (fuel), 0000 350 0526 (oil) |
| 6 | Husqvarna Lock Spring Part No. | 503 43 65-01 / 503436501 |
| 7 | Lock Spring Material | Spring steel |
| 8 | Twist Lock Material | Hard‑wearing polymer |
Products Application
Cover Fastener Replacement
The twist lock spring secures the top shroud and air filter cover on professional saws like the Stihl MS651 and MS661. Replacing a worn or missing twist lock prevents covers from loosening under vibration, maintaining correct cooling airflow and air filter sealing . Also used on classic saws like the Stihl 028 and 038 to keep service panels securely retained .
Fuel & Oil Cap Restoration
Many Stihl and Husqvarna chainsaws use spring-loaded twist‑lock caps for fuel and oil tanks . These caps feature internal spring mechanisms that maintain pressure and seal . Replacing a broken or leaking cap restores a proper seal, preventing leaks and ensuring system integrity during operation.
Control Mechanism Locking Spring
For Husqvarna and Jonsered chainsaws, the lock/position spring (503 43 65-01) is used in control linkages, clutch covers, and handle mechanisms . It holds levers and moving parts in position under vibration, ensuring smooth, repeatable operation and proper safety function.
Quality and Craftsmanship Details
Products Package
About Us
As a premier garden machinery parts supplier, Jiaxing Norsun Trading Co., Ltd. bridges global distributors with over 100 vetted China manufacturers. We streamline your B2B supply chain through strict quality control, flexible production, and factory-direct wholesale pricing. Partner with us for reliable, high-volume sourcing of precision-engineered outdoor power equipment components.
Trusted Partnership Power
YOUR PROFESSIONAL ONE-STOP SOURCE
FOR 10000+ OUALITY PARTS
Verified Factory Excellence
BACKED BY 200+ TRUSTED FACTORY PARTNERS
Production process
Quality control
Expo experience
Customer Reviews
FAQ
Q: What is a chainsaw twist lock spring used for?
A: It is used in two common applications: as a spring mechanism inside quick‑release twist locks that secure covers, and as locking springs in fuel/oil caps. It may also refer to position springs used in control linkages and handle mechanisms on some Husqvarna models .
Q: How do I confirm which twist lock or spring fits my chainsaw?
A: Check your chainsaw model number and compare it against the compatibility lists above. The most reliable method is to refer to your existing part number. Common Stihl part numbers include 1144 141 2300 (MS651/661), 1113 140 9200 (028/038/MS381), and 0000 350 0525/0000 350 0526 (fuel/oil caps). For Husqvarna, look for 503 43 65-01 .
Q: What is the MOQ and lead time?
A: MOQ: 100 PCS. Delivery: 7-14 days. Neutral export carton packaging.
Hot Tags: chain saw twist lock spring, China chain saw twist lock spring suppliers, ms382 parts, MS382 Cylinder Kit Close 52mm 1 2, MS382 Fuel Hose, MS382 Clutch Drum Set 5PCS
