GPS Speedometer 85mm 3-3/8in W Pro - Waterproof 0-160 MPH

Our review of the GPS Speedometer 85mm W Pro focuses on drivers and riders who want a clean, accurate replacement gauge with extra indicator functions; the single biggest reason to consider it is the built-in GPS speed sensing that eliminates mechanical drive gear and gives crisp readings. Installation is straightforward for anyone comfortable with 12/24V negative-ground wiring, and the IP67 construction makes it suitable for exposed applications on cars, trucks, motorcycles and small boats.

Key Features

• 85mm size: The compact 85mm (3-3/8in) footprint fits common aftermarket gauge holes for an easy visual upgrade.
• GPS speed sensing: GPS-based speed measurement provides accurate, cable-free readings and reduces maintenance compared with mechanical speedometers.
• Rugged construction: IP67 waterproof rating with a 316 stainless steel bezel and ABS housing keeps the unit rustproof and UV-resistant in harsh environments.
• Clear display: Black dial with a red needle and white LED illumination delivers good contrast for daytime and nighttime visibility.
• Integrated indicators: Built-in turn signal and high beam functions consolidate multiple dash lights into one compact gauge.
• Odometer memory: Total mileage records to 99999.9 miles with adjustable and power-off memory to preserve trip data.

Who It's For

This gauge is aimed at DIY installers and vehicle owners who want an accurate, low-maintenance speedometer replacement that works with 12V or 24V negative-ground systems. It suits car, truck, motorcycle and marine owners who appreciate a stainless bezel and weatherproofing for exposed mounting.

It is not the best pick for users who need integrated OEM CAN-bus compatibility or those who prioritize an ultra-durable lifetime in every reported case; a few users have raised durability concerns, so professionals wanting guaranteed long-term reliability in extreme conditions should consider heavy-duty industrial options instead.

Pros & Cons

Pros

• Easy to install with the supplied GPS sensor and 1ft wiring harness, allowing most installations to be completed quickly.
• Accurate GPS-based speed readings and a clear white LED illuminated dial make the gauge practical day or night.
• IP67 waterproofing, 316 stainless bezel and anti-fog lens give confidence for marine or exposed use.
• Useful built-in turn signal and high beam indicators reduce dash clutter.

Cons

• Some users report intermittent durability issues over time, so longevity may vary by application and handling.
• Does not include a mounting cup; a separate mounting cup is recommended for some installations.

Specifications

Size	85mm (3-3/8in)
Speed range	0 - 160 MPH
Power	12 / 24 Volt negative ground systems
Waterproof rating	IP67
Housing & bezel	ABS housing, 316 stainless steel bezel
Illumination	White LED
Odometer	Records to 99999.9 miles with power-off memory

Our Verdict

The 85mm GPS Speedometer W Pro is a practical, value-minded upgrade for motorists and riders who want accurate, cable-free speed readings and weatherproof construction. It delivers useful indicator functions and a clear, illuminated dial for day and night use; buyers should accept that a small number of users noted longevity concerns, but for most DIY installers this unit is a cost-effective, feature-packed replacement.

Frequently Asked Questions

Does this speedometer work on 24V systems?
Yes, the gauge supports both 12V and 24V negative-ground electrical systems.

Is the unit waterproof for marine use?
Yes, the speedometer has an IP67 rating and uses a 316 stainless bezel and anti-fog lens for resistance to water and corrosion.

Does it include a mounting cup?
The package contains the speedometer, GPS sensor, 1ft wiring harness and instructions; a separate 85mm mounting cup is sold if needed for your dash.