{"product_id":"jmchstore-exhaust-muffler-for-honda-gx340-gx390-predator-420cc-53mm-inlet-heat-shield-deflector","title":"JMCHstore Exhaust Muffler for Honda GX340\/GX390 \u0026 Predator 420cc — 53mm Inlet, Heat Shield \u0026 Deflector","description":"\u003cp\u003e\u003cstrong\u003eJMCHstore Exhaust Muffler with Deflector is a direct-replacement metal muffler assembly designed to fit Honda GX340\/GX390, Predator 420cc 13hp and several 389–459cc commercial engines, providing durable exhaust routing and heat shielding.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis replacement muffler kit includes a painted exhaust pipe, heavy heat shield, deflector, gaskets, nuts and screws so you can restore safe exhaust flow and control where hot gases are directed. It’s sized for a 53mm (2-inch) inlet and ships with hardware to install multiple deflector orientations. The unit is built of stamped steel with a black finish and an anti-spark perforated net to reduce the risk of ejecting sparks from the exhaust.\u003c\/p\u003e\n\n\u003ch3\u003eWill this muffler fit my engine and equipment?\u003c\/h3\u003e\n\u003cp\u003eCheck the inlet diameter and muffler type before ordering: this assembly is designed for engines with a 53mm (2-inch) exhaust inlet and is compatible with Honda GX340\/GX390, Predator 420cc (13hp), and many 389–459cc platforms used on pressure washers and small industrial engines. It is not compatible with Predator 459cc engines or models that use a different muffler flange layout.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFits engines with 53mm (2-inch) exhaust inlet\u003c\/li\u003e\n  \u003cli\u003eCompatible: Honda GX340, GX390; Predator 420cc 13hp; DuroMax\/DuroMax Lifan\/Loncin equivalents\u003c\/li\u003e\n  \u003cli\u003eNot compatible with Predator 459cc or non-matching flange types\u003c\/li\u003e\n  \u003cli\u003eCompare physical shape and bolt pattern to your stock muffler before purchase\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow does the deflector and heat shield improve safety?\u003c\/h3\u003e\n\u003cp\u003eThe muffler includes a heavy-duty heat shield and an adjustable deflector that lets you route hot exhaust away from users and sensitive components. The perforated anti-spark net inside the outlet helps trap hot particles, while the painted inlet pipe and multiple mounting holes allow flexible installation angles.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eAdjustable deflector offers up to eight exhaust directions\u003c\/li\u003e\n  \u003cli\u003eHeavy heat shield reduces radiated heat to nearby surfaces\u003c\/li\u003e\n  \u003cli\u003eAnti-spark net helps limit ejected particles\u003c\/li\u003e\n  \u003cli\u003eIncludes three self-tapping screws for securing the deflector\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat comes in the box and what tools will I need?\u003c\/h3\u003e\n\u003cp\u003eThe package contains the muffler body, exhaust pipe, two gaskets, five nuts, a muffler deflector and three screws—enough hardware for most standard swaps. Basic hand tools (socket or wrench set and a screwdriver) and a gasket scraper or cleaner are usually sufficient for installation; torque to manufacturer specs for a reliable seal.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eIncluded: 1 muffler, 1 exhaust pipe, 2 gaskets, 5 nuts, 1 deflector, 3 screws\u003c\/li\u003e\n  \u003cli\u003eRecommended tools: wrenches\/sockets, screwdriver, gasket cleaner\u003c\/li\u003e\n  \u003cli\u003eInstallation tip: verify bolt pattern and tighten evenly to prevent leaks\u003c\/li\u003e\n  \u003cli\u003eDurable metal construction for long service life under normal use\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow does this muffler affect performance and maintenance?\u003c\/h3\u003e\n\u003cp\u003eThis muffler is a functional replacement intended to restore correct exhaust routing and heat management; it is not a performance-tuning component. Properly installed, it keeps exhaust gases directed and helps protect nearby components, while remaining simple to clean or replace during routine maintenance.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDesigned for replacement use, not performance enhancement\u003c\/li\u003e\n  \u003cli\u003eEasy to remove for maintenance or inspection\u003c\/li\u003e\n  \u003cli\u003eDurable black finish resists corrosion during normal operation\u003c\/li\u003e\n  \u003cli\u003eKeep gaskets and fasteners tight to prevent leaks\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: Ideal for owners and technicians of small commercial engines, pressure washers, water pumps and generator sets who need a reliable, bolt-on replacement muffler. If your equipment uses a 53mm exhaust inlet and the bolt pattern matches common GX340\/GX390 or Predator 420cc designs, this JMCHstore kit provides an affordable way to restore safe exhaust routing and heat control. Always compare this muffler’s shape and mounting holes with your original part to avoid fitment issues.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Does this muffler fit Honda GX390?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes—this JMCHstore muffler fits Honda GX390 engines with a 53mm (2-inch) exhaust inlet; confirm bolt pattern matches before installing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What hardware is included with the muffler?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: The kit includes the muffler, exhaust pipe, two gaskets, five nuts, one deflector and three self-tapping screws.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"JMCHstore","offers":[{"title":"Default Title","offer_id":56827013792084,"sku":"B0BRNQVSWX","price":87.96,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1063\/2652\/4244\/files\/jmchstore-muffler-front-view.jpg?v=1786993514","url":"https:\/\/gardenluxe.co.uk\/products\/jmchstore-exhaust-muffler-for-honda-gx340-gx390-predator-420cc-53mm-inlet-heat-shield-deflector","provider":"Gardenluxe Uk","version":"1.0","type":"link"}