Humminbird IDMK-H89R Reinforced In-Dash Mounting Kit f/HELIX 8/9 G3N/G4N [740179-1] Brand_Camco with a black hand grip

with a black hand grip and center cap setting off the high polish of the stainless steel

Effectively aerates up to 15 gallons

Uses replacement bonnets SW19175

ROTECH - X20

Humminbird IDMK-H89R Reinforced In-Dash Mounting Kit f/HELIX 8/9 G3N/G4N [740179-1] Brand_Camco with a black hand gripIDMK H89R Reinforced In Dash Mounting Kit for HELIX 8 9 G3N G4N In Dash Mounting Kit allows quick and easy, in dash installation, with all necessary mounting hardware. Features: Compatible with: HELIX 9 MSI GPS G4N, HELIX 9 MSI GPS G3N, HELIX 9 MDI GPS G4N, HELIX 9 MDI GPS G3N, HELIX 9 CHIRP GPS G4N, HELIX 9 CHIRP GPS G3N, HELIX 8 MSI GPS G4N, HELIX 8 MSI GPS G3N, HELIX 8 MDI GPS G4N, HELIX 8 MDI GPS G3N, HELIX 8 CHIRP GPS G4N, HELIX 8 CHIRP GPS G3N