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Brass Filler Cap with Tall Bung
BTFCB$49.50 - $57.00Brass Filler Cap with Tall Weld-In Filler Neck – Vented or Non-Vented Add classic style and versatility to your custom build with this Brass Filler Cap and Tall Weld-In Filler Neck. Ideal for -
Brass Vented / Filler Cap and Weld in Bung
BVF$52.00 - $55.00Brass Vented Filler Cap & Bung Kit – 1.25"-12 Thread Back by popular demand, we’re now offering a vented filler cap and bung kit featuring a solid brass cap. Built on the same trusted platform as... -
Filler Cap and Bung
FCwB$25.75 - $29.75Non-Vented Filler Cap & Bung Kit – 1.25"-12 Thread, Compact Design The non-vented filler cap and bung kit is a compact and clean solution for gas tanks, oil tanks, and fluid reservoirs where... -
Filler Cap and Bung Vented
FCBV$31.75 - $36.50Vented Filler Cap & Bung Kit – 1.25"-12 Thread, Compact Design This vented filler cap and bung kit is a compact, functional solution for gas tanks, oil tanks, or any fluid container that requires... -
Aluminum Filler Cap with Tall bung
ATFC$30.75 - $38.50Tall Weld-In Filler Neck with Aluminum Cap – Vented or Non-Vented This tall weld-in filler neck and aluminum cap kit offers added height and versatility over our standard filler bung setup. Designed...
Description
Brass Filler Cap & Weld-In Bung – For Oil or Fluid Tanks
Upgrade your custom build with this premium Brass Filler Cap and Bung Kit, ideal for use on oil tanks, overflow reservoirs, or any non-vented fluid container. This setup provides a clean, reliable seal with a classic look—perfect for motorcycles, hot rods, or fabrication projects where style and function matter.
The kit includes a precision-machined 360 brass cap and a weld-in bung made from your choice of mild steel, 6061-T6 aluminum, or 304 stainless steel. The cap threads into the bung with a 1.250"-12 thread and seals tightly with a replaceable rubber O-ring for leak-free performance.
If you need a vented version, we offer that option separately—this listing is for the non-vented cap only.
Product Specs:
Thread Size: 1.250"-12
Cap O.D.: 1-5/8"
Bung O.D.: 1.75" flange, 1.5" step-down section
Cap Material: 360 Brass
Bung Material Options: Mild Steel (standard), 6061-T6 Aluminum, or 304 Stainless Steel (Add $3.00 for Stainless or Aluminum)
Seal: Replaceable rubber O-ring included
Weld-in design for permanent installation
Made in the USA
Whether you're fabricating a custom oil tank or building an overflow reservoir, this filler cap and bung combo delivers durability, leak protection, and timeless brass style.
