Filler Neck, Billet, 16An, Port & Neck

• Black anodized billet aluminum housing with the included bolt- on billet aluminum radiator neck stands 3-1/4" tall, which locates filler neck at highest point to bleed off air on cars with low-mount radiators
• The unit can be flipped 180° for either right or left water hose outlet location
• -16AN female port is designed to be used with Nos. 22622, 63521, 63522, 63523, 63525
• No need to worry about gaskets because on the top and bottom of the housing are machined O-ring grooves with included O-rings
• Includes a 1/2" NPT port for installing a water temperature sending unit and two 1/4" NPT ports to plumb return lines on popular aftermarket cylinder heads
• Includes bolts and washers

Part # AVAILABLE OPTIONS
63307 6-8 lb Racing Radiator Cap
63309 8-10 lb Radiator Racing Cap
63313 12-16 lb Racing Radiator Cap
63316 14-18 lb Racing Radiator Cap
63320 19-21 lb Racing Radiator Cap
63324 23-25 lb Racing Radiator Cap
63328 27-29 lb Racing Radiator Cap
63332 31-33 lb Racing Radiator Cap