NOS Y-Block - 6 AN Male Inlet - Dual 6 AN Male Outlets - Blue Cylinder Head Bolt 4-1/8 in Outer Diameter

4-1/8 in Outer Diameter

Black Aluminum Fittings

likes headers and gears

Guide bolt tightens against fastener

NOS Y-Block - 6 AN Male Inlet - Dual 6 AN Male Outlets - Blue Cylinder Head Bolt 4-1/8 in Outer DiameterNOS Pipe Fitting Specialty Y 17835NOS 06AN 06AN 06AN Blue Pipe Fitting Product Description: Y Block 6 AN Male Inlet Dual 6 AN Male Outlets Aluminum Blue Anodized Sold Individually The use of nitrous oxide as a performance enhancement has been used since World War II. Allied aircraft used it for emergency boosts in airspeed and altitude capabilities. By the end of World War II, jet propulsion had been invented and the United States' government was