Auto Meter 3401 Mechanical Vacuum Gauge Plastic

Description

Product Overview

The Auto Meter 3401 is a mechanical boost and vacuum gauge designed for automotive enthusiasts who demand precision without electronic complexity. Housed in a painted plastic shell, the gauge features a traditional incandescent bulb that illuminates the dial perimeter, ensuring visibility in any lighting condition. Weighing just 0.8 ounces (22.68 g), it offers a lightweight yet durable solution for both street and race vehicles. The gauge includes a 1/8″ nylon line, T‑fitting, vacuum fitting, compression fittings, bulb and socket assembly, red and green bulb covers, mounting hardware, and detailed installation instructions.

Usage

Ideal for performance tuning, track days, and daily driving, the 3401 provides real‑time boost and vacuum data to help drivers optimize engine performance. Its mechanical operation means no electrical system is required, making it compatible with any vehicle regardless of wiring condition. Whether installed in a classic muscle car or a modern turbocharged racer, the gauge delivers consistent readings even in high‑temperature, high‑vibration environments.

Why Choose Us

Auto Meter’s reputation for race‑proven mechanical instruments ensures you receive a gauge built for accuracy and longevity. The all‑plastic construction resists corrosion, while the incandescent lighting offers a classic look that never fades. Our comprehensive kit eliminates the need for additional parts, and the detailed guide guarantees a straightforward installation process, saving you time and effort.

Key Features

• Mechanical operation – no electrical wiring needed for reliable performance
• Durable painted plastic housing resistant to heat and vibration
• Incandescent dial lighting provides clear visibility in all conditions
• Complete installation kit includes fittings, nylon line, and mounting hardware
• Proven accuracy for both boost and vacuum measurements in street and race applications

FAQ

Do I need an electrical connection for this gauge?

No. The 3401 is fully mechanical and operates solely with vacuum and boost pressure, eliminating the need for any electrical wiring.

Can this gauge be used on turbocharged vehicles?

Yes, the gauge accurately measures boost pressure and is suitable for both naturally aspirated and turbocharged engines.

What is included in the installation kit?

The kit contains a 1/8″ nylon line, T‑fitting, vacuum fitting, compression fittings, incandescent bulb and socket assembly, red and green bulb covers, mounting hardware, and a step‑by‑step instruction manual.

Is the gauge compatible with older classic cars?

Absolutely. Its mechanical design works with any vehicle that has a vacuum source, making it perfect for classic and vintage automobiles.

How does the incandescent lighting compare to LED options?

Incandescent lighting offers a warm, traditional glow that enhances dial readability and adds a classic aesthetic, while still providing reliable illumination without the need for additional power sources.