AutoMeter 2-5/8" Ultra Nite Oil Pressure Gauge, 0-150 PSI, Mechanical, Liquid Filled (4223) wavetrac The reason the S cover

The reason the S cover performs so much better is that they have a much larger diffuser area

vacuum-formed carbon fiber material that results in a 20% - 30% stiffer & stronger product than an equivalent wet-lay up product

1994 Porsche 911 Speedster

The ATX20 is a Standardized Size used in a large number of Powersports Vehicles such as Touring Motorcycles

and the Audi RS Q8 is not too far behind

AutoMeter 2-5/8" Ultra Nite Oil Pressure Gauge, 0-150 PSI, Mechanical, Liquid Filled (4223) wavetrac The reason the S coverA mechanical oil pressure gauge with a 2 5 8" diameter face, 0 150 PSI range, liquid filled design, and luminescent dial that glows green at night for improved visibility in low light racing conditions. Features: Luminescent dials glow green at night for dimly lit tracks when no battery is available to light conventional instruments For racing use only Not intended for street applications No electrical system required for gauge operation compatible