{"product_id":"atracypart-trx400-carburetor-for-honda-trx400-1999-2015-direct-fit-replacement-restores-throttle-response","title":"ATRACYPART TRX400 Carburetor for Honda TRX400 (1999–2015) — Direct-Fit Replacement, Restores Throttle Response","description":"\u003cp\u003e\u003cstrong\u003eHigh-quality ATRACYPART TRX400 carburetor engineered to restore throttle response and fuel delivery for 1999–2015 Honda TRX400 models.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis direct-fit replacement carburetor is built to match the original equipment dimensions and restore reliable starting, steady idling, and consistent power delivery across the RPM range. It’s manufactured to the same basic tolerances as the factory unit and includes the key bore and flange measurements you need for a correct fit on Sportrax and FourTrax TRX400 ATVs. Use it when your existing carb is leaking, clogged, or no longer delivers crisp throttle control.\u003c\/p\u003e\n\n\u003ch3\u003eWill this carburetor fit my Honda TRX400 model?\u003c\/h3\u003e\n\n\u003cp\u003eYes — the ATRACYPART TRX400 carburetor is specified to fit multiple TRX400 generations and replaces OE part numbers 16100-HN1-013 and 16100-HN1-A43. Confirm compatibility by checking the intake and airbox flange diameters against your vehicle before purchase.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eCompatible models: 1999–2008 Sportrax 400 TRX400EX 2x4\u003c\/li\u003e\n  \u003cli\u003eAlso fits: 2001–2015 Sportrax TRX400 and 2009–2014 TRX400X\u003c\/li\u003e\n  \u003cli\u003eOlder FourTrax: 1999–2000 TRX400\u003c\/li\u003e\n  \u003cli\u003eVerify: Intake inner Ø 39mm \/ outer Ø 43mm; air-filter inner Ø 54mm \/ outer Ø 58mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow does this replacement affect engine performance?\u003c\/h3\u003e\n\n\u003cp\u003eReplacing a worn or clogged carburetor can return throttle responsiveness and help the engine run more consistently under load. This unit is machined to provide a proper fuel–air mixture, reducing stumbling, hard starting, and irregular idle caused by degraded internals in the original carb.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eRestores steady idle and crisper throttle response\u003c\/li\u003e\n  \u003cli\u003eHelps reduce fuel puddling and off-idle hesitation\u003c\/li\u003e\n  \u003cli\u003eMatches OEM flow characteristics for predictable power delivery\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat are the key dimensions and connections to check before installation?\u003c\/h3\u003e\n\n\u003cp\u003eTo ensure a smooth installation, measure the intake and airbox flanges on your ATV and compare them to the carburetor specs. Also confirm that the throttle and choke linkages align with your frame harness and that vacuum or overflow lines match the original routing.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eIntake side: inner diameter 39mm, outer diameter 43mm\u003c\/li\u003e\n  \u003cli\u003eAir filter side: inner diameter 54mm, outer diameter 58mm\u003c\/li\u003e\n  \u003cli\u003eReplace gaskets and clamps for a leak-free seal during installation\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat support and warranty come with this part?\u003c\/h3\u003e\n\n\u003cp\u003eThe ATRACYPART carburetor is sold with a 12-month warranty against manufacturing defects and functional failures. If the unit arrives damaged or develops issues under normal use, contact the seller for troubleshooting, replacement, or refund options.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003e12-month warranty covering defects and functional failures\u003c\/li\u003e\n  \u003cli\u003eCustomer support available through the original marketplace messaging\u003c\/li\u003e\n  \u003cli\u003eRecommended: inspect for shipping damage and test off-vehicle if possible before final installation\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho this is for: This replacement carburetor is aimed at ATV owners and mechanics who need a dependable, direct-fit option for older Honda TRX400 Sportrax and FourTrax machines. It’s a practical choice for riders restoring a TRX400, replacing a leaking or clogged carb assembly, or preparing a machine for regular trail use without the expense and wait time of an OEM special-order part.\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 carburetor replace OEM part number 16100-HN1-A43?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes, it replaces OEM numbers 16100-HN1-013 and 16100-HN1-A43 for the listed TRX400 years.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What are the intake and airbox diameters to check?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Intake inner Ø 39mm\/outer Ø 43mm; air-filter inner Ø 54mm\/outer Ø 58mm.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"ATRACYPART","offers":[{"title":"Default Title","offer_id":48086714712222,"sku":"B086KYL5Q4","price":61.93,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/atracypart-trx400-carburetor-front-view.jpg?v=1785902749","url":"https:\/\/northtrailauto.ca\/products\/atracypart-trx400-carburetor-for-honda-trx400-1999-2015-direct-fit-replacement-restores-throttle-response","provider":"North Trail Auto","version":"1.0","type":"link"}