Brass Filler Cap and Bung

This filler cap and bung are most commonly used for oil tanks or any other fluid containers, such as an overflow tank that does not need to be vented.  We make a vented version of these filler necks a..

Price: $44.75

This is a different version of our ever popular filler bungs, these weld filler bungs are taller than our standard flanged ones for those who would like to stand the filler neck off of your tank a little higher. They are the same 1 1/4" x 12 thread pitch that all of our filler caps and bungs ar..

Price: $13.75

This is our new brass gas cap for fitment on all HD models from 1986 on up to present. The top is made of solid brass and comes with the same O-ring and thread used by the factory. They feature a knurled outer edge for good looks and extra grip for removal and installation. They are a slig..

Price: $69.95

A slightly different taller version of our standard filler cap andweld in bung. These are a weld in filler neck made of mild steel and come with an aluminum filler cap in your choice of vented or non vented version. The taller weld in filler bung can be cut down or used in it's full length for ..

Price: $26.75

This is a replacement O-ring for all of our vented and non vented filler caps. Made from fuel and oil resistant rubber for a long service life.

-sold each for $0.39

Price: $0.39

This is an OEM style weld in gas tank bung, the same one used on all of the later Harley Davidson Tanks. Permits the use of factory or the vast variety of aftermarket replacement gas caps on the market. The bung is made of mild steel and has the threads stamped into it. The filler bungs are ava..

Price: $14.00

By popular demand we are now making a Brass version of our common Filler Cap. These can be used for oil tanks or any other fluid container that requires a non vented cap. These caps use the same standard bung we have made for years the 1 1/4 x 12 thread. These will not fit an OEM threaded bung ..

Price: $33.00

These are our weld in filler bungs, used with all of our vented and non vented caps.

• 1 1/4" x 12 thread
• 1 3/4" flange OD
• 1 1/2" stepped down OD
• Available in Mild Steel, Aluminum, or Stainless Steel
• Sold each

Price: $13.50

This is a vented version of our common Filler Cap and Bung. These caps use the same standard bung we have used for years. They have a small .040" hole for venting with a replaceable brass vent fitting installed on the inside to reduce liquid seepage. These filler necks are used commonly for gas..

Price: $29.00