The A series firewall fitting is all aluminum and requires only one hole in the firewall. It has a 1 inch aluminum ball with a swivel angle up to 50 degrees from straight. It is held on the firewall with one 1 5/16 aluminum nut.
Assembly weighs only 1.3oz-1.5oz (.08lb-.09lb) depending on ball hole size.
Ball hole sizes available are .125, .188, .218, .240, .250, .260, .330, .375, .438 and .500.
Order example: TTP-125A (.125 ball hole)
Well built Eyeball firewall fitting, works well with good range of pass thru angle. Would be better if designed so the drill thru hole is a nominal size (1 instead of 1.06) so it could be drilled quickly with a step drill. Since the firewall should be made of Stainless, even enlarging it 0.060took more effort than drilling it to 1.00.
Very well made. Quality part.
The hole size you would need in the firewall for this part to fit would be 1.115".
These are finished in blue. We are updating our photo to reflect current finish.