3 1/8" Mechanical Tachometer by Superior Labs

Avg Cruise 2300 RPM
Replaces Mitchell D1-112-5023 or Stewart Warner P-551-AZ

Since 1977, Superior Labs (SLI) has been the aircraft tachometer of choice by most OEM’s for precision and reliability. Now SLI is proud to offer these precision aircraft tachometers for aftermarket replacement of most single engine aircraft. If that shaky tachometer needle, or inaccurate tachometer reading has you questioning your RPM's, it’s time to replace it with a precision SLI tachometer.

SLI manufactures aircraft tachometers for all general aviation aircraft types and offers custom screen printed dials, internal lighting, anti-glare glass, and pre-set engine hours. Chief Aircraft currently stocks a wide range of aircraft tachometers for the following aircraft:

• Cessna
• Piper
• Mooney
• Diamond
• Beech
• American Champion

Superior Labs is currently FAA approved and holds the latest revision on TSO C49b for the Mechanical Recording Aircraft Tachometer.