Autometer 3-3/8 Ultra-Lite In

OVERVIEW

When you are pushing the limits of your high-performance air-cooled engine, a factory speedometer simply won''t cut it. The AutoMeter 3-3/8 Inch Ultra-Lite Mechanical Speedometer (ATM4493) is the gold standard for enthusiasts who demand precision and a race-ready aesthetic in their Beetle, Karmann Ghia, or custom Sand Rail. Featuring a striking brushed aluminum face and a matching silver anodized bezel, this gauge provides a modern, high-tech look that complements any custom dashboard or fiberglass buggy shell. Unlike digital units that can feel laggy or out of place in a vintage interior, this mechanical speedometer offers the immediate, tactile response of a traditional needle sweep, calibrated for speeds up to 160 MPH. It is the perfect centerpiece for a performance-oriented cockpit, ensuring you stay informed whether you are cruising the strip or blasting across the dunes.

Beyond its iconic appearance, the Ultra-Lite series is engineered for the rigors of the automotive environment. This unit includes a resettable trip odometer, allowing you to track fuel stops or leg distances during off-road rallies with ease. The 3-3/8 inch (85.7mm) diameter is the industry standard for large dash gauges, making it a straightforward fit for many aftermarket dash panels and gauge pods. However, because this is a professional-grade mechanical unit using a 5/8 inch - 18 threaded input, it is important to recognize that it is a performance upgrade rather than a "plug-and-play" replacement for a stock VW unit. For the builder who refuses to compromise on quality and wants the legendary reliability of AutoMeter, the ATM4493 delivers the accuracy and durability required to handle the vibrations and harsh conditions common in the air-cooled Volkswagen world.

FITMENT

This gauge is a universal high-performance component. While it is designed to fit the following air-cooled Volkswagen applications and custom builds, please see the Pro Tips section regarding cable compatibility:

• Volkswagen Beetle (Standard & Super): All years with custom dash or modified gauge clusters.
• Volkswagen Karmann Ghia: Fits custom 3-3/8 inch dash openings.
• Volkswagen Type 181 Thing: Ideal for rugged, custom interior builds.
• Volkswagen Bus (Type 2): Early and Late models utilizing custom instrument panels.
• Dune Buggies & Sand Rails: Perfect for Berrien, Meyers Manx, and tube-chassis race cars.
• VW-Based Kit Cars: Popular for Bradley GT, Sterling, and Speedster replicas.

SPECS

• Product Series: AutoMeter Ultra-Lite
• Part Number: ATM4493
• Gauge Diameter: 3-3/8 Inches (85.7mm)
• Speed Range: 0-160 MPH
• Gauge Type: Mechanical (Cable Driven)
• Input Thread: 5/8 Inch - 18 Threaded
• Drive Type: .104 Inch Square Drive
• Dial Finish: Brushed Aluminum (Silver)
• Bezel Finish: Silver Anodized Aluminum
• Illumination: Incandescent Perimeter Lighting (Includes Red/Green bulb covers)
• Odometer: Integrated Total Miles and Resettable Trip Odometer

PRO TIPS

1. Solving the VW Cable Connection

The most important thing to know as a VW specialist is that this speedometer WILL NOT work with a stock Volkswagen speedometer cable. Stock VW cables use a push-on or M18 threaded connection at the speedometer head, whereas this AutoMeter unit requires a 5/8 inch - 18 threaded nut with a .104 inch square drive end. To install this in your Bug or Bus, you must have a custom cable made by a speedometer shop that features the VW spindle drive end on one side and the AutoMeter 5/8 inch nut on the other. Attempting to force a stock cable will damage the drive mechanism of this precision instrument.

2. Prevent Cable Kinking and Needle Bounce

Mechanical speedometers are only as accurate as the cable driving them. When installing the ATM4493 in a custom dash, ensure that the cable has a smooth, large-radius bend as it exits the back of the gauge. Tight bends or "kinks" in the cable housing will cause the internal drive wire to bind, resulting in a "bouncing" needle or a chirping sound coming from the dashboard. If you experience needle flutter at low speeds, check your cable routing first and ensure the cable is properly lubricated with a high-quality graphite-based speedometer cable lubricant.

3. Understanding Mechanical Calibration

Since this is a mechanical unit, the accuracy of the 160 MPH readout is determined by your tire diameter and the gear ratio of your transmission''s speedometer drive. This gauge is calibrated for the industry-standard 1,000 RPM at 60 MPH. If you are running significantly larger off-road tires or ultra-low-profile street tires, your speedometer reading may be slightly off. Always verify your speed with a GPS app after the initial installation so you know exactly how much "offset" you have at highway speeds. This is especially critical for high-performance builds where staying within the power band or avoiding tickets is a priority.