Twisted Choppers Micro Flat Oil Tank Filler Cap with Weld-In Bung Non-Vented
Keep your custom oil tank sealed clean and tight with the Twisted Choppers Micro Flat Oil Tank Filler Cap. Its compact low-profile design sits flush against the tank for a tidy custom look, while the weld-in bung gives you a permanent, leak-free installation you can build around.
Key Features
- Non-vented flat cap for custom motorcycle oil tanks
- Weld-in bung included – installs permanently for a clean, leak-free seal
- Fits 1-1/4-inch oil tank bungs
- Low-profile design sits flush for a clean custom look
- Available in Black and Polished finish
- Made in the USA
Technical Specifications
- Type: Non-vented flat filler cap
- Bung Size: 1-1/4 inch
- Includes: Cap and weld-in bung
- Finish Options: Black, Polished
- Origin: Made in the USA
- Material: aluminum cap & mild steel bung
- Bung height: 1.03″ overall & .875″ to flange
- Bung outside diameter: 1.25″
Fitment Notes
- Fits any custom motorcycle oil tank with a 1-1/4-inch weld-in bung
- Non-vented – do not use as a replacement for vented caps on vented tank applications
- Weld bung to tank before threading cap; no motorcycle-specific fitment required






Paul Barber –
Great Quality and works perfectly
David Bassler –
Nice part