Whether you’re cruising, fishing, or racing, a reliable GPS speedometer kit helps you track speed accurately with minimal installation fuss. These kits are designed for boats and other vehicles, offering clear displays, multiple units, and durable construction. This guide highlights five top options and explains who each is best for, so you can choose the right gauge for your needs.
Selected Boat GPS Speedometer Kits
Summary table of chosen products:
- MAIMEIMI GPS Speedometer 3-3/8″ – 85mm dial, TFT display, IP67 waterproof, 9-33V, three units (km/h, mph, knot).
- ELING 85mm Waterproof GPS Speedometer – 12/24V, red/yellow backlights, outdoor-ready antenna attachment.
- ELING Warranted Digital GPS Speedometer Kit – 52mm dial, quick satellite lock, 12/24V.
- KAOLALI GPS Speedometer 85mm – stainless steel bezel, multi-unit support, IP67.
- ARTILAURA 3-3/8″ 85mm GPS Speedometer – 7-color backlight options, 0-80 MPH range, universal fit.
Note: Each product is selected for clear digital readouts, straightforward installation, and reliable GPS signal behavior in marine and mixed-vehicle environments. The list favors gauges with standard hole sizes (52mm or 85mm) and clear unit switching, which helps reduce installation time and misconfigurations for most DIY installers.
MAIMEIMI GPS Speedometer Kit

The MAIMEIMI kit features a TFT screen with a clear range display and an 85mm (3 3/8″) dial size. It operates from 9-32V DC and is IP67 waterproof with anti-fog protection. Three speed units are supported: km/h, mph, and knots, with one-decimal precision. Best for boat owners who want a large, easy-to-read digital gauge that also suits cars and other vehicles in mixed-use fleets. A potential limitation is the need to ensure an appropriate panel depth for the 55mm back depth when mounting.
ELING 85mm Waterproof GPS Speedometer

This kit uses an 85mm dial with 12/24V operation and offers red and yellow backlights for visibility in bright or low-light conditions. It requires an 85mm panel cut and 55mm depth behind the panel for installation. The GPS antenna should have a clear view of the sky to ensure reliable satellite reception. Best for users who want a straightforward install with strong backlighting and a robust mounting approach. A limitation is that outdoor antenna positioning is important for optimal signal performance.
ELING Digital GPS Speedometer Kit (52mm)

The ELING 52mm kit fits into a 52mm (2 1/16″) panel hole and uses a 70mm behind-the-panel clearance. It uses a GPS antenna that should be mounted flat for best satellite reception. The unit supports quick signal lock, typically within seconds after first setup. This model is best for compact dashboards where space is at a premium and a quick signal fix is needed. A potential limitation is the smaller dial size, which may be less comfortable for reading at a distance while underway.
KAOLALI 85mm Boat GPS Speedometer

The KAOLALI speedometer uses a corrosion-resistant 316 stainless steel bezel and IP67-rated waterproof construction. It measures 85mm in diameter with an 55mm depth, and it supports multiple speed units (kont, mph, km/h) for flexible viewing. Best for users seeking a marine-grade finish with durable materials. A caution: ensure correct panel hole sizing and adequate back clearance during installation to avoid fit issues.
ARTILAURA 52mm GPS Speedometer

The ARTILAURA 52mm unit offers universal 12V/24V compatibility with a stainless steel bezel and anti-fog glass. It supports MPH, Km/h, and Knots and tracks speed up to 999.9 with trip and total mileage. Best for space-limited dashboards requiring flexible unit switching and a robust, weatherproof design. A limitation is the smaller screen size, which may reduce readability at a distance while under way.
Buying Guide
- Panel size and mounting depth: Choose 52mm or 85mm gauges based on your dashboard hole size and available rear clearance. Ensure the plastic or metal bezel will fit without obstruction.
- Power and wiring: Most units operate on 12V or 24V. Confirm your vessel’s electrical system and plan for mounting a stable power supply.
- Units and readability: Look for GPS speedometers that switch between mph, km/h, and knots. Larger displays with backlighting improve readability in bright sun or night operations.
- GPS reliability: A clear view of the sky improves satellite lock speed and accuracy. Outdoor or windscreen-mounted antennas generally perform best.
- Durability: For marine use, IP67 waterproof ratings and anti-fog glass help ensure long-term performance in wet environments.
- Installation caveats: Some models require precise back clearance and can need professional mounting if provided panel cutouts are not standard.
FAQ
- What is the typical panel size for these GPS speedometers?
– Common options include 52mm (2-1/16″) and 85mm (3-3/8″) diameters, with depth allowances around 2-3/4″ to 3-1/2″ behind the panel depending on design. - Do these gauges need a separate GPS antenna?
– Yes, most models include a GPS antenna that should be placed where it has a clear view of the sky for accurate satellite reception. - Can I switch the units on all models?
– Most kits offer mph, km/h, and knots; some models use simple wiring changes to toggle units. Refer to installation instructions for the exact method. - How quickly do these speedometers lock onto GPS signals?
– Initial lock often occurs within seconds; subsequent re-locks are faster with a clear sky view. - Are these gauges suitable for marine and automotive use?
– Many models are designed for both marine and vehicle applications, but confirm voltage and mounting requirements match your use case.