GlowShift’s Vacuum Gauges allow you to easily monitor your engine's vacuum and compression
levels ensuring your engine is performing at optimal levels with no air leaks, which
could cause rough idling, poor fuel economy, and increased emissions. GlowShift
offers both electronically and mechanically driven vacuum gauges in a variety of
styles and options, giving you multiple choices when it comes to selecting the right
vacuum pressure gauge for your vehicle. GlowShift includes all mounting hardware,
installation instructions, free lifetime technical support, and a one year limited
warranty with every vacuum gauge purchased.