Airmar B258 / SS258 High Speed Fairing Block

The Airmar B258 / SS258 High Speed Fairing Block is a critical transducer accessory engineered for anglers and boaters who demand precision sonar performance at speed. Whether you're running a high-performance center console, a tournament bass rig, or a saltwater cruiser, this fairing block reduces turbulence and drag around your transducer housing, allowing clean sonar data transmission even when planing at full throttle. Built by Airmar—the industry standard for marine electronics—this fairing block is essential for anyone serious about maintaining accurate fish-finding capability across a wide speed range.

The fairing block works by streamlining water flow over and around the transducer dome, minimizing cavitation and aeration that can degrade sonar signal quality at high speeds. Its hydrodynamic design channels water smoothly, preserving the acoustic window necessary for reliable bottom tracking, structure detection, and fish targets. The block is purpose-built for the B258 and SS258 transducer models, ensuring precise fit and optimal acoustic alignment. Constructed from durable composite materials, it withstands saltwater exposure, UV degradation, and the vibration of extended high-speed operation—critical factors for offshore and fast-water applications.

This fairing block is ideal for boaters running Airmar B258 or SS258 transducers at speeds above 25 knots, where water turbulence commonly disrupts sonar signals. Installation is straightforward—it mounts directly to your existing transducer assembly with no modification to your hull or electronics. Anglers relying on forward-facing sonar, side-imaging, or traditional downward sonar will benefit from the cleaner signal integrity this fairing provides. Compatible with both freshwater and saltwater installations, the Airmar B258 / SS258 High Speed Fairing Block is the performance upgrade that keeps your electronics working as designed, mile after mile.