{"product_id":"thundermingo-mercruiser-carburetor-2-barrel-for-2-5l-3-0l-4-cyl-electric-choke-3-75x2-base","title":"THUNDERMINGO Mercruiser Carburetor 2‑Barrel for 2.5L\/3.0L 4‑Cyl — Electric Choke, 3.75x2\" Base","description":"\u003cp\u003e\u003cstrong\u003eTHUNDERMINGO marine carburetor is a direct-replacement 2-barrel carb for many Mercruiser 2.5L and 3.0L 4‑cylinder stern drive engines, supplied with an electric choke, pre-installed jets, linkages and gaskets for a ready-to-tune installation.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis carburetor is built to match common Mercruiser OE patterns and comes with the fittings and hardware most mechanics expect: electric choke, side fuel inlet, pre-installed #70.9 jets plus spare jets, both short and long throttle linkages, and gaskets. It replaces OEM references such as 3310-864940A01, 3310864940A01 and 8M0045397 and uses a 3 3\/4 x 2 inch base bolt pattern. It is intended for use on many Mercury Marine stern drive 2.5L and 3.0L two-barrel, four-cylinder setups — but it will not fit the smaller 3.25-inch base used on some early 2GC models.\u003c\/p\u003e\n\n\u003ch3\u003eHow will this carburetor match my Mercruiser engine?\u003c\/h3\u003e\n\u003cp\u003eThe THUNDERMINGO unit is engineered to fit the common base bolt pattern and function like the stock Mercarb on most 2.5L and 3.0L 2-barrel four-cylinder engines. Confirm the base bolt pattern and choke\/fuel inlet orientation on your manifold before ordering. Early Mercruiser 2GC carburetors have a smaller base and will not accept this part without modification or an adapter.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eReplaces OEM #3310-864940A01 and similar part numbers.\u003c\/li\u003e\n  \u003cli\u003eBase bolt pattern: 3 3\/4 x 2 inches — not compatible with 3.25\" bases.\u003c\/li\u003e\n  \u003cli\u003eElectric choke and side fuel inlet match many Mercury Marine installations.\u003c\/li\u003e\n  \u003cli\u003eDesigned for 2.5L and 3.0L 4‑cylinder stern drives.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat tuning and parts are included out of the box?\u003c\/h3\u003e\n\u003cp\u003eThe carburetor ships with jets already installed and includes additional jets for common tuning adjustments, plus both short and long throttle linkages and gaskets to simplify replacement. Jets and linkages let you adapt the unit to your engine’s setup and local conditions; final tuning may still be required to dial in performance and fuel economy.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003ePre-installed main jets: #70.9 for a baseline setting.\u003c\/li\u003e\n  \u003cli\u003eIncludes spare jets: #68 and #78 for richer or leaner tuning.\u003c\/li\u003e\n  \u003cli\u003eShort linkage installed; long linkage supplied in the box for different throttle arrangements.\u003c\/li\u003e\n  \u003cli\u003eGaskets and mounting hardware included for a complete swap.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eAre there special installation notes or compatibility warnings?\u003c\/h3\u003e\n\u003cp\u003eNo printed installation instructions are provided, so plan to follow a trusted installation video or have a qualified mechanic install and tune the carburetor. Verify you do not have the early small 2GC base before purchase; if you do, an adapter or modification may be necessary. The unit is bench-tested but final adjustments are often needed after installation.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eNo installation manual included — follow online guides or pro service.\u003c\/li\u003e\n  \u003cli\u003eNot compatible with the rare small 3.25\" 2GC base without modification.\u003c\/li\u003e\n  \u003cli\u003eTuning recommended after installation; fuel system checks advised.\u003c\/li\u003e\n  \u003cli\u003eCarburetor supplied ready to install and tested at the factory.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: This THUNDERMINGO carburetor is aimed at boat owners, marine mechanics and restoration projects replacing worn or damaged Mercruiser two-barrel carbs on 2.5L and 3.0L four-cylinder stern drive engines. If you need a near-direct replacement with electric choke, spare jets for tuning, and both linkages included, this unit offers a practical, serviceable option — provided your manifold uses the 3 3\/4 x 2 inch bolt pattern and you’re prepared to tune or have a technician install it.\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: Will this carb fit my early Mercruiser 2GC engine?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Probably not—the early 2GC used a smaller 3.25\" base. Measure your carb base before buying or plan for an adapter.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Are installation instructions included?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No printed instructions are provided; follow online installation videos or use a qualified mechanic for fitment and tuning.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"THUNDERMINGO","offers":[{"title":"Default Title","offer_id":48082861490334,"sku":"B0BVB6MCBX","price":167.75,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/thundermingo-carburetor-front-view_51969c3e-3bf2-4eab-8a1d-6719f2ad8e7e.jpg?v=1785816899","url":"https:\/\/northtrailauto.ca\/products\/thundermingo-mercruiser-carburetor-2-barrel-for-2-5l-3-0l-4-cyl-electric-choke-3-75x2-base","provider":"North Trail Auto","version":"1.0","type":"link"}