The oversized K&N 16 inch air filter top and base plates can be paired with a variety of 16 inch K&N air filters for boosting the performance in carbureted race cars. The plates are made from lightweight aluminum with a spun aluminum finish featuring K&N logos embossed on the outer edge of the top plate. The base plate fits carburetors with a 7-5/16 inch air horn flange and drops the filter 1-1/2 inches below the carb flange. The drop base design helps to maximize air filter height while still clearing the hood in many custom racing applications. These K&N 16 inch top and base plates will work with various heights of 16 inch diameter K&N high-flow air filters such as the 3 inch tall air filter E-3022R, 3-1/4 inch tall air filter E-3023R, 3-1/2 inch tall air filter E-3024R, 3-3/4 inch tall air filter E-3025R, 4 inch tall air filter E-3026R and several other variations meant for off-road racing use. Additional Attributes: GTIN: 00024844351197 Finish: None Height: 1.5 in (38 mm) Item Type: High Performance Neck Flange: 7.313 in (186 mm) Outside Diameter: 16 in (406 mm) Package Contents: 1 Top Plate, 1 Base Plate Package Material: Paperboard Package Quantity: 1 Package Type: Box Product Style: Accessories Style: 1-1/2" Drop Base Top Style: Metal Warranty: 1 Year Limited Weight: 2.2 lb (1 kg) Extened Information: Life Cycle Status: Available To Order Emissions : Emission verification to be determined in ACES, vehicle application data. Packaging: Quantity of Each: 1 Package UOM: EA Dimension: 18.3750 x 18.3750 x 4.7500 inches