{"product_id":"aqbb-4-aluminum-heat-sink-for-4-inch-motors-snap-in-fit-for-my1020-mx650-mx500-sx500-improved-cooling","title":"AQBB 4\" Aluminum Heat Sink for 4-inch Motors – Snap-In Fit for MY1020 MX650 MX500 SX500, Improved Cooling","description":"\u003cp\u003e\u003cstrong\u003eAQBB's 4-inch aluminum snap-in heat sink cools 4\" diameter motors such as MY1020, MX650, MX500 and SX500 to lower operating temperatures and protect the motor and pump from overheating.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis precision-engineered motor radiator is a drop-in aluminum heatsink designed to improve airflow and thermal transfer on 4-inch-diameter electric motors and Delavan FB-series pump motors. Built to replace or upgrade OEM cooling fins, the AQBB heatsink snaps onto compatible motors to expand surface area, speed heat dissipation, and reduce thermal stress during extended use. It's lightweight, corrosion-resistant, and tailored for common electric scooters, e-bikes, go-karts, and Delavan pump applications.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this heatsink lower motor temperature effectively?\u003c\/h3\u003e\n\u003cp\u003eThe AQBB heatsink increases exposed surface area and channels airflow around the motor, accelerating heat transfer away from the windings and casing. Its fin geometry and aluminum composition create a faster path for thermal energy to move from the motor into the surrounding air without adding significant weight.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eHigh-conductivity aluminum alloy for rapid thermal transfer\u003c\/li\u003e\n  \u003cli\u003eOptimized fin layout to improve convection around the motor\u003c\/li\u003e\n  \u003cli\u003eSnap-in fit reduces thermal interfaces for better conduction\u003c\/li\u003e\n  \u003cli\u003eSurface oxide layer for corrosion resistance and sustained performance\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhich motors and Delavan pump models will this fit?\u003c\/h3\u003e\n\u003cp\u003eThis heatsink is made for motors with a roughly 4\" diameter, including common Razor motor models and the MY1020 family. It is explicitly compatible with many Delavan FB series pumps, including FB2, FB3 and FB6 standard part variants listed by manufacturer codes.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFits 4\" diameter motors such as MY1020, MX650, MX500, SX500\u003c\/li\u003e\n  \u003cli\u003eCompatible with Delavan FB2, FB3 and FB6 series pump models\u003c\/li\u003e\n  \u003cli\u003eWorks with a broad range of electric-bike, scooter, and go-kart retrofits\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow easy is installation and maintenance?\u003c\/h3\u003e\n\u003cp\u003eThe heatsink uses a snap-in design for straightforward installation without complex tools, and its aluminum body simplifies cleaning and corrosion management. Replacement or removal is quick, making routine inspection and service faster than many welded or bonded radiator options.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eTool-minimal snap-in mounting for quick retrofits\u003c\/li\u003e\n  \u003cli\u003eLightweight design avoids extra mechanical load on motor bearings\u003c\/li\u003e\n  \u003cli\u003eDurable finish resists grime and preserves thermal performance\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat measurable benefits can I expect in real-world use?\u003c\/h3\u003e\n\u003cp\u003eWhile results vary with duty cycle and ventilation, an aluminum heatsink like this reduces steady-state motor temperatures by improving heat rejection and lowering thermal cycling stress. That can translate into longer component life and fewer heat-related performance losses during demanding runs.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eImproved cooling efficiency compared with cast-iron fins\u003c\/li\u003e\n  \u003cli\u003eReduced risk of overheating under extended load\u003c\/li\u003e\n  \u003cli\u003ePotential for extended pump and motor service life due to lower operating temperatures\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: The AQBB 4\" motor heat sink is aimed at DIY enthusiasts, e-bike and scooter owners, small electric vehicle hobbyists, and technicians who need a compact, effective cooling upgrade for 4\" diameter motors and Delavan FB-series pumps. Choose this part if you want an easy-to-install, corrosion-resistant aluminum heatsink to enhance cooling, reduce overheating risk, and simplify maintenance on common motors used in scooters, e-karts, dirt-bike conversions, and pump-driven systems.\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 heatsink fit any 4-inch motor?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: It fits most motors with an external 4\" diameter, including MY1020 and common Razor models, but check external diameter and mounting clearance before purchase.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is the heatsink corrosion-resistant for outdoor use?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes — the aluminum surface forms an oxide layer that boosts corrosion resistance and maintains thermal performance outdoors.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"AQBB","offers":[{"title":"Default Title","offer_id":48085812379806,"sku":"B0D2QP8QG2","price":49.98,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/aqbb-front-view-heat-sink.jpg?v=1785877716","url":"https:\/\/northtrailauto.ca\/products\/aqbb-4-aluminum-heat-sink-for-4-inch-motors-snap-in-fit-for-my1020-mx650-mx500-sx500-improved-cooling","provider":"North Trail Auto","version":"1.0","type":"link"}