Fasten Transducer Arm 400mm with 90° Joint

The Fasten 400mm sonar transducer holder with 90° joint is the perfect solution for side-mounting a transducer. With its extended 400mm length, the probe easily reaches below the tubes of an inflatable boat. The unique 90° offset ensures the transducer faces directly forward, even when mounted on the side rail. Cogged washers and a massive nut guarantee the setting remains stable in currents or at speed.

Key advantages

• Extended 400mm arm for effortless reach from the side of the boat.
• 90° joint for correct transducer orientation during side mounting.
• Firm position lock using a cogged washer system.
• Quick attachment and locking into any Fasten base.
• Upper joint for precise vertical alignment.

Technical parameters

• Arm length: 400 mm.
• Adapter angle: 90 degrees.
• Material: Engineering plastic, stainless steel.

Why choose this product?

This model solves the transducer side-mounting dilemma. Unlike standard holders, the 90° joint handles the orientation for you. It's a professional tool for vertical jigging or for boats where the transom is occupied by multiple motors. It ensures a clean sonar signal free from propeller interference.