Brand: AutoMeter Manufacturer's Part Number: 3279 Part Type: Gauge Sending Unit Pressure Snubbers Product Line: AutoMeter Fuel Pressure Snubbers Automotive Fittings Part Number: ATM-3279 UPC: 046074032790 Fitting Size 1: 1/8 in. NPT Fitting Attachment 1: Male threads Fitting Size 2: 1/8 in. NPT Fitting Attachment 2: Female threads Gauge Sending Unit Pressure Snubber Material: Stainless steel Quantity: Sold individually. Notes: Required for installation of 30 psi Fuel Pressure gauges on '98-02 Dodge Cummins Diesel Applications in order to protect sending units from excessive pressure spikes during start up. Description: Over time, high fuel pressure spikes can significantly reduce the life of your fuel pressure sender. These AutoMeter fuel pressure snubbers have been designed to fix that problem. They are manufactured from stainless steel, so they're good for any type of fuel. You can use one of these AutoMeter fuel pressure snubbers to help isolate the sender from engine vibrations and reduce back pulsing of the fuel system, in order to increase the life of the sender.