{"product_id":"garmin-gt21-th-stainless-steel-thru-hull-transducer-with-clearv-and-traditional-sonar-for-coastal-and-offshore-fishing","title":"Garmin GT21-TH Stainless Steel Thru-Hull Transducer with ClearV and Traditional Sonar for Coastal and Offshore Fishing","description":"\u003cp\u003eGT21-TH\u003c\/p\u003e\u003cp\u003ePerfect for coastal and offshore fishermen who want traditional sonar and CHIRP ClearV scanning sonar with a stainless steel stem, this thru-hull mount transducer consistently displays clear and crisp fish arches with superior target separation as well as clear definition of structure below the boat.\u003c\/p\u003e\u003cp\u003eThe CHIRP ClearV element has a power rating of 500 W and operating frequencies of 260\/455 kHz. The traditional sonar has a power rating of 600 W and operating frequencies of 50\/200 kHz. It includes a built-in fast-response temperature sensor.  For hull deadrises less than 25 degrees.\u003c\/p\u003e\u003cp\u003eGT21-TH includes an 8-pin transducer with stainless steel stem, fairing block, isolation plate and bushings, mounting hardware and installation instructions. Follow the instructions carefully to avoid damaging your boat.\u003c\/p\u003e\u003cp\u003e\u003cimg src=\"https:\/\/productimageserver.com\/prop65\/6pt.png\" alt=\"Warning\"\u003e\u003cstrong\u003eWARNING:\u003c\/strong\u003e This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to \u003ca href=\"http:\/\/P65Warnings.ca.gov\"\u003eP65Warnings.ca.gov\u003c\/a\u003e.\u003c\/p\u003e \u003c!--- cis2:m2lsl5xp ---\u003e\n\u003cp\u003eThe Garmin GT21-TH is an advanced thru-hull transducer designed specifically for coastal and offshore anglers seeking reliable, high-quality sonar imaging. Featuring a durable stainless steel stem and a comprehensive set of mounting hardware, this transducer ensures a secure fit on boats with hull deadrises less than 25 degrees. Its dual sonar capabilities include traditional 600-watt sonar operating at 50\/200 kHz, ideal for deep water fish detection and structure scanning, and CHIRP ClearV sonar with 500-watt power at 260\/455 kHz, providing crisp, detailed fish arches and superior target separation. This combination allows anglers to distinguish fish from underwater structures with greater clarity, enhancing fishing success in challenging conditions. The built-in fast-response temperature sensor adds valuable water temperature data, which is critical for locating active fish and understanding environmental conditions. Garmin’s GT21-TH transducer is compatible with a range of Garmin fish finders and marine displays, making it a versatile choice for serious anglers who demand performance and durability. The package includes an 8-pin transducer, fairing block, isolation plate, bushings, mounting hardware, and detailed installation instructions to facilitate a straightforward setup process. Proper installation is crucial for optimal performance and to prevent damage to your vessel. \u003c\/p\u003e\u003cp\u003eNote: This product contains chemicals known to the State of California to cause cancer and reproductive harm. For more information, visit \u003ca href=\"http:\/\/P65Warnings.ca.gov\"\u003eP65Warnings.ca.gov\u003c\/a\u003e. The Garmin GT21-TH transducer is engineered to deliver precise, reliable sonar imaging, making it an essential tool for anglers targeting fish in coastal and offshore environments where clear, accurate readings are vital for success.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003eDual Sonar Capabilities: Traditional 50\/200 kHz and CHIRP ClearV 260\/455 kHz for comprehensive underwater scanning\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eHigh Power Output: 600W for traditional sonar and 500W for ClearV for clear, crisp imagery\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eDurable Stainless Steel Stem: Designed for reliable mounting on boats with hull deadrises less than 25 degrees\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eBuilt-in Temperature Sensor: Provides real-time water temperature data critical for fishing strategies\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eComplete Installation Kit: Includes fairing block, isolation plate, bushings, hardware, and instructions for easy setup\u003c\/li\u003e\u003c\/ul\u003e\u003cstyle\u003etable.productattributes, .productattributes td { border-bottom: 1px solid #ddd; border-collapse: collapse; padding: 2px; text-align: left; }\u003c\/style\u003e\n\u003ctable class=\"productattributes\"\u003e\n\u003cthead\u003e\u003ctr\u003e\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003cbr\u003e","brand":"Garmin","offers":[{"title":"Default Title","offer_id":44253822025817,"sku":"65533","price":472.97,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0623\/1818\/2489\/files\/65533XL.jpg?v=1785358930","url":"https:\/\/www.marinepartsonly.com\/products\/garmin-gt21-th-stainless-steel-thru-hull-transducer-with-clearv-and-traditional-sonar-for-coastal-and-offshore-fishing","provider":"Marine Parts Only","version":"1.0","type":"link"}