Brand: Aeromotive Manufacturer's Part Number: 33101 Part Type: Vacuum Pump Regulators Product Line: Aeromotive Vacuum Pump Regulators Automotive Fittings Part Number: AEI-33101 UPC: 00684980003215 Vacuum Pump Regulator Type: Straight Fitting Size 1: -12 AN Adjustable: No Gauge Port: Yes Gauge Port Size: 1/8 in. NPT Regulator Material: Aluminum Regulator Color: Black/Red Quantity: Sold individually. Description: Aeromotive vacuum pump regulators allow you to control and adjust your crankcase vacuum easily and effectively. Loosen the locknut, turn them to adjust, and you're done! No shims are required! These CNC-machined billet aluminum regulators are designed to work with Aeromotive vacuum pumps and are equipped with ORB-12 inlet and outlet ports, as well as a 1/8 in. gauge port.