AUTO METER Tachometer Shock Mounting Adapter — 3209 pedestal strap kit for 3 3/8" to 5" cases, vibration-isolating race mount

The AUTO METER 3209 Tachometer Shock Mounting Adapter is a lightweight strap-and-base kit that converts compatible tachometers to a secure pedestal-style mount for race applications.

This shock mounting adapter provides a stable pedestal conversion for select 3 3/8" and 3 3/4"–5" tachometer cases, creating a cleaner install and improved vibration isolation in high‑performance vehicles. Designed for track use, the kit replaces standard mounting hardware with a single-stage strap and base assembly to hold the instrument firmly while reducing mechanical shock transmitted to the gauge.

Which tachometers will this adapter fit?

The 3209 is engineered to accept tachometers that have a 3 3/8" diameter section where the strap secures, and it also works to convert many 3 3/4" and 5" cases to pedestal mounts. Check your gauge case diameter and step-down profile to confirm compatibility before purchasing.

• Direct replacement for 5" pedestal-mount tachometers with the specified step-down case.
• Adapts many 3 3/4" and 5" tachometers to a pedestal configuration.
• Includes base assembly kit for straightforward installation.

How does this adapter reduce vibration and shock?

The adapter uses a strap-style clamp and a purpose-built base to limit movement and decouple the tachometer from harsh chassis vibration. The design helps preserve instrument accuracy and longevity in the demanding environment of racing.

• Strap mount secures the gauge to the pedestal, minimizing rotational play.
• Base assembly distributes shock across the mounting surface.
• Lightweight construction avoids adding unnecessary mass to the dash area.

What is included and how easy is installation?

The kit ships with the mounting strap and the complete base assembly needed to convert a compatible tachometer to a pedestal mount. Installation typically requires basic hand tools and a few minutes of work by anyone familiar with dash instrumentation.

• Complete base assembly kit included for a tidy install.
• Simple strap clamp design fits around the specified case diameter.
• Compatible with quality instruments when used as intended for racing.

Are there any usage restrictions I should know?

This adapter is intended for RACE USE ONLY and is not designed or certified for street-legal vehicles. It adapts the mechanical mounting only; electrical components such as programmable shift lights or RPM signal generators are sold separately.

• RACE ONLY — not intended for street applications.
• Does not include RPM signal generator or electronic programming tools.
• Works best when paired with high-quality gauges for reliable performance.

Who this is for: The AUTO METER 3209 Shock Mounting Adapter is ideal for racing teams, track-day enthusiasts, and performance builders who need a secure pedestal mount for compatible tachometers. If you run a vehicle in demanding conditions and want a robust, lightweight mounting solution that reduces shock and cleans up the instrument installation, this adapter is built for that purpose.