Garmin GMR™ xHD3 24" Radar Dome
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You have 30 days to request a return. All sale items are final sale.
The Garmin GMR™ xHD3 24" Radar Dome brings open-array performance into a compact dome package. Powered by 4 kW of magnetron output and a 48-nautical-mile maximum range, it delivers high-definition target imaging with the fast redraw rates and clutter-rejection tools that serious offshore boaters and anglers demand — all in a quiet, low-profile dome that fits where open arrays can't.
Key Features
- 4 kW transmit power — strong, reliable returns at range for confident offshore navigation
- 48-nautical-mile maximum range — extended coverage for bluewater passages and offshore fishing runs
- Advanced Scan Averaging Technology — reduces sea clutter and interference for a cleaner, easier-to-read display
- Up to 60 RPM rotation speed — fast target updates keep pace with high-speed vessels and rapidly changing traffic
- Dual-Range mode — simultaneously displays close-in and distant radar images in a split-screen view
- 24" dome — larger antenna aperture improves bearing resolution compared to 18" domes, ideal for vessels with the arch or mast space to accommodate it
- Quiet dome drive motor — low-noise operation suitable for helm stations, flybridge, and live-aboard installations
18" vs. 24" — Which Size Is Right?
Both dome sizes share the same xHD3 feature set. The GMR™ xHD3 18" Radar Dome is the better fit for smaller vessels or tight mounting locations. The 24" dome offers improved bearing resolution and is the preferred choice when space allows — particularly for vessels 35 ft and up running offshore routes.
Related Products
- Garmin GMR™ xHD3 18" Radar Dome — compact sibling for space-constrained installations
- Garmin Power Cable for GMR™ Radars, 48' — required power cable for GMR dome installations
- Garmin GMR™ 18 HD3 Radar Dome — entry-level HD3 dome, 36 NM range
- Garmin GMR Fantom 18x Solid-State Doppler Radar Dome — solid-state upgrade with Doppler colour motion alerts
Parts Desk Insights
Best use case: The GMR™ xHD3 24" is the right choice for powerboats and sportfishers in the 35–60 ft range that run regular offshore passages or fish beyond the 20-mile mark. The 48 NM range and 60 RPM rotation make it well-suited to fast-moving vessels where target update speed matters. Scan Averaging is particularly valuable in steep chop or following seas where sea clutter would otherwise obscure close-in targets. It connects to any Garmin GPSMAP or echoMAP chartplotter via a single cable, and supports dual-radar mode when paired with a compatible Garmin MFD — a common setup for vessels that want overlapping short- and long-range coverage. Boaters with limited arch space who still want xHD3 performance should consider the 18" version instead.
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 3–4 business days.
Special-order items: timeline confirmed after order.
Returns & warranty
Returns & Satisfaction Guarantee
We stand firmly behind the quality of every product we sell. Your confidence matters to us — and we back it with a straightforward 30-Day Satisfaction Guarantee.
If you are not fully satisfied, you may request a return within 30 days of delivery. All returns must receive pre-approval prior to being sent back. Unauthorized returns will not be accepted.
To qualify for a return:
Item must be in new, unused condition
Product must be in its original packaging
All parts, components, hardware, manuals, and accessories must be included
Packaging must be undamaged and suitable for resale
Important:
Electronics are strictly inspected. No returns on open-box electronics. Exceptions may apply only with prior written approval. Any electronic unit that has been installed, powered, activated, or altered may not be eligible for return.
We are serious about product integrity — and equally serious about taking care of our customers. If there is ever a product issue, contact us immediately so we can make it right.
For return authorization, please contact our support team before shipping anything back.