Here at APS Racing USA we have been working on our line of weld in bungs and aluminum caps. All caps are made out of 6061-T6 aluminum. We carry 1 5/8” along with 2” cap and bungs. Weld in bungs are either available in 6061-T6 aluminum or D.O.M Steel. Our beautiful weld in bungs and aluminum caps go well with custom power steering tanks, radiator overflow tanks, valve covers, rear ends, filler neck plates and inspection ports. Available in single or bulk sale for fabricators and fabrication shops. Custom orders and or quotes are available. Please call us or email us at info@apsracingusa.com