Size 16 1/2" -length. x 11"-largh. at the widest point.
Total length from tip to tip of the mounting bracket about 20".
The tunnel is approximately 2 3/4"-wide. x 2 1/2"-prof.
It features a 3/8" output NPT (use 12726 or 12727 taps) on the center of the right side bottom, as well as two 1/4" taps (use 632252 taps or 632253) on both sides near the back of the tank to be used as a crossover line or, for an additional possibility in the passage of gasoline lines.