Designed for superior durability and performance, this CNC Billet Aluminum Weld-On Flange with Cap is the exact component we trust in our fuel tanks, expansion tanks, and other non-vented applications. After struggling to source high-quality parts, we partnered directly with a CNC machining company to create our own precision-machined neck and cap.

Crafted from solid 6061 billet aluminum, this flange and cap set offers exceptional strength, corrosion resistance, and a professional anodized finish. Unlike lower-quality alternatives, our weld flanges are free from coatings, ensuring a clean and reliable weld every time.

Key Features:

• Premium 6061 Billet Aluminum – Strong, lightweight, and corrosion-resistant.
• Precision CNC Machining – Ensures a perfect fit and high-quality finish.
• Raw Aluminum Finish – No coatings on weld flange, making welding easy and reliable.
• Ideal for Non-Vented Applications – Designed for fuel tanks, expansion tanks, and more.

Specifications:

• Brand: Straightboost Performance
• Cap Material: 6061 Aluminum
• Flange Material: 6061 Aluminum
• Cap Finish: Anodized Black (Raw Aluminum available. Please check our eBay store)

38mm | 1.5″ :

• Weld-On Flange OD: 50mm | 1.97″
• Weld-On Flange ID: 39mm | 1.52″
• Weld Flange Height: 26mm | 1.02″
• Assembled Overall Height: 32mm | 1.26″
• Cap OD: 60mm | 2.36″
• Complete Assembly Weight: 96g (3.4 oz)