Products Description
Complete Muffler Exhaust Kit fits HUS135 140 435 440 445 450 Chainsaw
Twin-Port Acoustic Dampening Assembly featuring Pressed-Steel Expansion Chamber, Thermal-Isolation Gasket, and Dual Socket-Head Fasteners for 35cc-50cc Professional Powerhead Exhaust Management.
Chain saw HUS135/HUS140/HUS435/HUS440/
HUS445/HUS450 Muffler kit
The HUS135-450 complete muffler kit constitutes a comprehensive exhaust-management assembly engineered for the complete restoration of 2-stroke chainsaw exhaust-system integrity. The kit comprises a twin-port pressed-steel muffler body with an internal multi-chamber expansion architecture, a precision die-cut metallic thermal-isolation gasket, and a pair of high-tensile socket-head mounting screws. Together, these components re-establish the critical functions of the exhaust system: directing high-temperature combustion gases away from the operator and cylinder assembly, attenuating the sharp pressure-wave noise pulses to legally permissible decibel levels, and maintaining the calibrated exhaust-port backpressure essential for optimal 2-stroke transfer-port scavenging efficiency. Purpose-calibrated across six HUS professional platform models, this single-kit solution restores factory-spec sound suppression, exhaust-gas containment, and engine breathing dynamics in a single field-service procedure.
Technical Profiles & Materials
Angular Multi-Plane Ventilation Architecture Triple louver vents on the housing build natural convection airflow over the spring and pulley assembly. Quickly releases friction heat from repeated cold pulls, avoiding thermal softening that weakens starter rope and distorts the nylon pulley.
Heavy-Duty Clock-Spring Energy Storage Thicker, more coiled high-carbon steel clock spring stores ample kinetic energy. It smoothly rewinds the rope to crank large 90cc high-compression engines without sudden jerks, protecting internal parts and easing wrist fatigue.
Reinforced Nylon Pulley with Abrasion-Guard Rope Exit 30% glass-filled PA6 pulley withstands frequent high-tension rope retraction and temperature swings, free of radial expansion and hub cracking. The rounded rope outlet eliminates sharp edges to stop cord fraying and premature breakage.
Technical Specifications
| ITEM | DETAILS |
| Type | Complete Chainsaw Exhaust Muffler Kit (Twin-Port) |
| Application | HUS135 / 140 / 435 / 440 / 445 / 450 Chainsaw (35cc-50cc 2-Stroke) |
| Code | 0125027 |
| Material | Deep-Drawn Pressed Steel Muffler / Metallic Heat-Shield Gasket / Alloy Steel Socket Screws |
| Details explanation | Pressed-Steel Multi-Baffle Expansion Chamber (Twin-Port Outlet) |
| Brand Name | SeaSummer |
| Operating Temp | -20°C to +700°C |
| Delivery Time | 30 Days |
| Packaging | Cardboard packaging |
Products Application
HUS Multi-Model Fleet Exhaust Standardization
An essential exhaust-system spare kit for professional arborist crews, municipal tree-maintenance departments, and chainsaw dealership service centers managing mixed fleets of HUS 135 through 450 series saws. The six-model compatibility of this complete kit-muffler, gasket, and hardware delivered as a single part number-dramatically reduces the inventory complexity, ordering errors, and workshop delays associated with stocking individual muffler shells, gaskets, and fastener sets across multiple incompatible OEM part numbers.
Post-Impact Muffler Body Replacement
Ideally suited for replacing mufflers with impact-crushed or seam-separated bodies-a frequent consequence of chainsaw kickback events, accidental drops during tree-climbing operations, or the saw being pinned under a felled log. A deformed muffler body alters the internal expansion-chamber geometry, changing the calibrated backpressure that directly affects engine power output and fuel-mixture requirements, while a separated seam allows unfiltered exhaust gas to escape at an unintended angle, creating a fire hazard in dry forest-floor conditions.
Exhaust-Leak & Noise-Exceedance Remediation
Serves as the complete exhaust-system restoration kit for chainsaw service centers addressing the classic muffler-failure symptoms-excessively loud operation exceeding workplace noise regulations, the characteristic "popping" or "spitting" sound of high-pressure exhaust gases escaping at a failed gasket or corroded muffler seam, and the visible soot-tracking or oil-residue staining around the cylinder exhaust flange that confirms gasket blow-by. The all-inclusive kit ensures that the muffler body, gasket, and fasteners-all of which degrade simultaneously from shared thermal and vibrational stress-are replaced in a single service event.
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: Are you an impartial industrial components dealer or a direct China water pump factors factory?
A:We are a direct, ISO9001-certified engineering water pump components manufacturing facility and precision fluid-control factor manufacture exporter primarily based in China. We function our personal cleanroom injection molding bays, computerized ultrasonic welding arrays, computerized hydraulic stress check stations, and clean-room packaging lines, passing direct-factory wholesale price financial savings straight to your element procurement margins.
Q: Can your manufacturing unit furnish full certification forms for food-contact or consuming water compliance?
A: Yes, absolutely. For food, beverage, or scientific applications, our manufacturing unit makes use of one hundred percent virgin, un-recycled polypropylene resins accompanied by means of fabric traceability certificates. We mechanically furnish B2B purchasers with complete FDA compliance documentation, NSF-grade compound declarations, and RoHS/REACH chemical protection screening sheets to make certain clean clearance thru worldwide customs.
Q: Do you provide customization picks for distinctly corrosive fluids like sturdy acids or ozone?
A: Yes, we are a thoroughly succesful OEM/ODM supplier. For aggressive chemical or ozone environments, we can improve the 12x26.5mm valve configuration in our factory: substituting the general PP housing with top class PVDF (Fluoropolymer) and changing any steel springs with Hastelloy or whole springless gravity-ball architecture, making sure final chemical resistance.
Q: How do we impervious a pattern batch to execute computerized lifecycle and burst-pressure testing?
A: We relatively inspire complete laboratory contrast earlier than logging mass grant agreements. We can ship a pattern lot of 5-10 gadgets of our inventory 12x26.5mm take a look at valves for assessment (setup costs and DHL/FedEx air freight apply). Once the factors pass by your inner lifecycle verification and a formal wholesale quantity manufacturing contract or container run is locked in, the sampling charges are a hundred percent credited returned to your industrial balance.
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