Derale 90 Degree Transmission Line Adapter Fitting - 1/2 in NPT Male to 6 AN Male - Black 52-22551 These cylinder heads feature a

These cylinder heads feature a 65cc or 75cc combustion chamber with a 64cc exhaust port and a 3/4'' thick head deck (ideal for nitrous or blower applications)

With (2) #8 (1/2) Lower Outlets

1996-1999 GMC K1500

1996-2000 Chevrolet Express 2500

Derale 90 Degree Transmission Line Adapter Fitting - 1/2 in NPT Male to 6 AN Male - Black 52-22551 These cylinder heads feature aProduct Description: Adapter 90 Degree 1 2 in NPT Male to 6 AN Male Aluminum Black Anodized Sold Individually Derale has been the leader in performance cooling for decades. Derale prides themselves in manufacturing high quality, high performance cooling products for O. E. M. and aftermarket applications. Whether you require cooling for the street, strip, track or off road Derale offer a wide variety of products for you.