---
product_id: 170511161
title: "VENTED or NON-VENTED Motorcycle Polished Aluminum Gas/Fuel Tank Cap - ALUMINUM Stepped Bung FOR ALUMINUM TANKS ONLY - Harley Chopper Bobber Cafe Racer (ALAL)"
brand: "billet proof designs"
price: "€ 48.12"
currency: EUR
in_stock: true
reviews_count: 8
category: "Billet Proof Designs"
url: https://www.desertcart.sk/products/170511161-vented-or-non-vented-motorcycle-polished-aluminum-gas-fuel-tank
store_origin: SK
region: Slovakia
---

# Temperature resistant -35°F to +250°F Includes vented & non-vented Buna-N O-rings 6061 Billet Aluminum precision machining VENTED or NON-VENTED Motorcycle Polished Aluminum Gas/Fuel Tank Cap - ALUMINUM Stepped Bung FOR ALUMINUM TANKS ONLY - Harley Chopper Bobber Cafe Racer (ALAL)

**Brand:** billet proof designs
**Price:** € 48.12
**Availability:** ✅ In Stock

## Summary

> ⚡ Upgrade your ride with precision-polished power — don’t let your tank settle for less!

## Quick Answers

- **What is this?** VENTED or NON-VENTED Motorcycle Polished Aluminum Gas/Fuel Tank Cap - ALUMINUM Stepped Bung FOR ALUMINUM TANKS ONLY - Harley Chopper Bobber Cafe Racer (ALAL) by billet proof designs
- **How much does it cost?** € 48.12 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/170511161-vented-or-non-vented-motorcycle-polished-aluminum-gas-fuel-tank)

## Best For

- billet proof designs enthusiasts

## Why This Product

- Trusted billet proof designs brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Proudly American Made:** Crafted in the USA with domestic materials, ensuring top-tier quality and reliability.
- • **Built to Brave Extremes:** Operates flawlessly in temperatures from -35°F to 250°F, perfect for all-season riders.
- • **Dual O-Ring Versatility:** Includes both vented and non-vented Buna-N seals to suit your riding style and tank needs.
- • **Effortless Installation:** Stepped aluminum bung designed for quick drop-in welding into any compatible aluminum tank.
- • **Precision Machined Elegance:** Mirror-polished 6061 billet aluminum cap for a sleek, premium finish that turns heads.

## Overview

The Billet Proof Designs Polished Aluminum Gas Cap is a premium, precision-machined fuel tank cap crafted from durable 6061 billet aluminum. Designed exclusively for aluminum tanks, it features a stepped bung for easy welding, dual Buna-N O-rings (vented and non-vented) for versatile sealing, and withstands extreme temperatures from -35°F to 250°F. Finished with a mirror polish and proudly made in the USA, this cap combines style, functionality, and rugged reliability for Harley, chopper, bobber, and cafe racer enthusiasts.

## Description

Billet Proof Designs Polished Aluminum Gas Cap. All you need to do is weld it in and fill it up! Easily welds to any ALUMINUM tank. Knurled Cap - Machined from 6061 Billet Aluminum and polished to a mirror finish. ALUMINUM Bung - Machined from 6061 Billet ALUMINUM and stepped to make welding a breeze. Just drill a 1-1/2" hole and drop it in. (2) 1/8" Buna-N O-Rings - ONE VENTED and ONE NON-VENTED INCLUDED - Temperature range -35 to +250 F. Durometer hardness is A70. MADE in the USA! Dimensions: Cap ONLY: OD= 1 5/8" Height (Including Threads)= 3/4" Knurled Edge= 1/4" Bung ONLY: OD= 1 5/8" Height= 3/8” Thread Pitch= 1-1/4"-12 Finish: Polished Aluminum. Included: Billet Aluminum Cap, Buna-N Seal, ALUMINUM Bung. Fitment: Will fit in any ALUMINUM tank that is able to accommodate the above dimensions. *Also available in solid brass!*

Review: Good product. - Good product. Used to make my own coolant bottle. Arrived on time and undamaged
Review: I want my money back - Them things are junk do not buy them I ruined my gas tank because the threads gaulled up there junk I had to weld the last one up and drill a hole in middle to put gas in the tank I'm pissed I want my money back

## Features

- Billet aluminum cap easily welds to an ALUMINUM tank.
- Knurled Cap - Machined from 6061 Billet Aluminum and polished to a mirror finish.
- ALUMINUM Bung - Machined from 6061 Billet ALUMINUM and stepped to make welding a breeze. Just drill a 1" hole and drop it in.
- (2) 1/8" Buna-N O-Rings - ONE VENTED and ONE NON-VENTED INCLUDED - Temperature range -35 to +250 F. Durometer hardness is A70.
- Made in the USA using domestic materials.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B081FL5QKB |
| Automotive Fit Type | Universal Fit |
| Best Sellers Rank | #1,547,839 in Automotive ( See Top 100 in Automotive ) #1,291 in Powersports Gas Caps |
| Brand | Billet Proof Designs |
| Color | Silver |
| Customer Reviews | 3.9 3.9 out of 5 stars (41) |
| Date First Available | May 13, 2014 |
| Exterior Finish | Aluminum |
| Is Discontinued By Manufacturer | No |
| Item Weight | 3.2 ounces |
| Item model number | AL_GAS_CAP_ALUM |
| Manufacturer | Billet Proof Designs |
| Manufacturer Part Number | AL_GAS_CAP_ALUM_AMA |
| Material | Aluminum |
| Package Dimensions | 7 x 4.5 x 1.3 inches |
| Style | Modern |
| Vehicle Service Type | Motorcycle |

## Product Details

- **Brand:** Billet Proof Designs
- **Color:** Silver
- **Exterior Finish:** Aluminum
- **Material:** Aluminum
- **Vehicle Service Type:** Motorcycle

## Images

![VENTED or NON-VENTED Motorcycle Polished Aluminum Gas/Fuel Tank Cap - ALUMINUM Stepped Bung FOR ALUMINUM TANKS ONLY - Harley Chopper Bobber Cafe Racer (ALAL) - Image 1](https://m.media-amazon.com/images/I/41A+okq1ARL.jpg)
![VENTED or NON-VENTED Motorcycle Polished Aluminum Gas/Fuel Tank Cap - ALUMINUM Stepped Bung FOR ALUMINUM TANKS ONLY - Harley Chopper Bobber Cafe Racer (ALAL) - Image 2](https://m.media-amazon.com/images/I/41LICleZpAL.jpg)
![VENTED or NON-VENTED Motorcycle Polished Aluminum Gas/Fuel Tank Cap - ALUMINUM Stepped Bung FOR ALUMINUM TANKS ONLY - Harley Chopper Bobber Cafe Racer (ALAL) - Image 3](https://m.media-amazon.com/images/I/41RXCyYquvL.jpg)
![VENTED or NON-VENTED Motorcycle Polished Aluminum Gas/Fuel Tank Cap - ALUMINUM Stepped Bung FOR ALUMINUM TANKS ONLY - Harley Chopper Bobber Cafe Racer (ALAL) - Image 4](https://m.media-amazon.com/images/I/41TrI7NEmpL.jpg)
![VENTED or NON-VENTED Motorcycle Polished Aluminum Gas/Fuel Tank Cap - ALUMINUM Stepped Bung FOR ALUMINUM TANKS ONLY - Harley Chopper Bobber Cafe Racer (ALAL) - Image 5](https://m.media-amazon.com/images/I/41pSfrxQbWL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Good product.
*by B***6 on July 4, 2018*

Good product. Used to make my own coolant bottle. Arrived on time and undamaged

### ⭐ I want my money back
*by C***. on March 20, 2020*

Them things are junk do not buy them I ruined my gas tank because the threads gaulled up there junk I had to weld the last one up and drill a hole in middle to put gas in the tank I'm pissed I want my money back

### ⭐⭐⭐⭐ Check for a vented/non selection
*by T***L on April 3, 2019*

I didn't see anywhere to select weather i wanted vented or non, so i figured that somehow it was going to be changeable once i got it. Well, it's not. Maybe i simply just didn't see where the selection was. Otherwise, it was a little small for my application, but that isn't the fault of the seller! Still a cool lil weld in gas cap.

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*Product available on Desertcart Slovakia*
*Store origin: SK*
*Last updated: 2026-02-04*