Furuno 225T-TM904 Side-Scan Transom Mount Transducer

The Furuno 225T-TM904 Side-Scan Transom Mount Transducer delivers the imaging clarity serious anglers and boaters demand when mapping structure, locating fish, and navigating unfamiliar waters. Built by Furuno—a name trusted across commercial and recreational fisheries for decades—this transom-mount side-scan unit transforms sonar capability by revealing bottom composition, submerged obstacles, and fish schools in real-time detail that conventional down-imaging cannot match. Whether you're sight-fishing shallow flats, prospecting deep offshore structure, or running tight through boulder fields, side-scan technology gives you visual confirmation of what lies beneath.

The 225T-TM904 employs advanced side-scan frequency technology to paint a wide lateral view of the water column in real-time, covering significantly more bottom area per pass than traditional 2D sonar. Its transom-mount design allows for quick deployment and removal without permanent hull modification, a critical advantage for tournament anglers, rental operators, and boaters who swap vessels seasonally. The robust housing is engineered to withstand saltwater exposure, shock loads from rough seas, and years of reliable operation—critical durability factors when your transducer is the gateway to every decision you make on the water. At 8 pounds, it balances substantial construction with manageable weight for secure mounting on nearly any transom configuration.

Experienced anglers operating Furuno chartplotters and fishfinders will recognize the 225T-TM904 as a direct upgrade path—its compatibility with Furuno's award-winning ecosystem means plug-and-play integration without hunting for adapters or workarounds. Boaters working shallow to moderate depths—from coastal bays and freshwater reservoirs to offshore banks and structure—gain the most dramatic advantage, as side-scan excels in these ranges. Installation on aluminum or fiberglass transoms takes minutes with proper mounting hardware, and the cable routing is straightforward for most helm setups. If you're tired of guessing where structure actually lies and want to fish with confidence, the Furuno 225T-TM904 delivers the visual evidence that transforms sonar from a helpful tool into a genuine competitive edge.