TRZ Motorsports Billet Fill Cap Kit - Aluminum - 20960-A
Lightweight Aluminum-Weld Billet Fill Cap Kit for Custom Fabrication
The TRZ Motorsports Billet Fill Cap Kit (Aluminum Bung) is a premium-grade, lightweight solution for performance fabricators needing a clean, reliable fill access point across a wide range of racing and custom applications. Whether you're working on fuel tanks, breather tanks, rearend housings, valve covers, oil fill systems, dry sump tanks, or weight bars, this kit provides the precision and durability TRZ is known for.
The kit features a CNC-machined, anodized, and laser-engraved 6061 billet aluminum cap, complete with aggressive grip grooves that make removal effortless - even with gloves or in tight engine bays. A rubber O-ring ensures a positive sealing surface, and this version includes a CNC-machined aluminum weld bung for builders who prefer lightweight construction or are working with aluminum tanks or components.
The cap uses a 2? fill opening, while the weld bung installs into a 2.25? cutout, making it simple to integrate into custom fabrication projects. A steel bung option is also available for high-strength steel-weld applications.
Performance Features
- CNC-machined 6061 billet aluminum cap with high-grip grooves
- Includes CNC'd aluminum weld bung (steel bung optional)
- Rubber O-ring delivers a tight, leak-resistant seal
- 2? fill opening suited for common race and fabrication uses
- Bung installs into a 2.25? hole
- Lightweight aluminum construction ideal for performance builds
- Perfect for fuel systems, breather tanks, rearend housings, valve covers, and more
- Durable, race-ready billet design
Quick Specs
- Cap Material: 6061 billet aluminum (anodized & engraved)
- Bung Material: CNC'd aluminum
- Fill Opening: 2?
- Hole Size Required: 2.25?
- Seal: Rubber O-ring
- Part Number: 20960-A
Frequently Asked Questions
Is the aluminum bung suitable for fuel or oil tanks?
Yes. The aluminum bung is ideal for aluminum tanks, covers, and fabrication pieces used in fuel, oil, breather, and general fluid systems.
Does this kit include everything needed?
Yes. The billet cap, O-ring, and aluminum weld bung are included - only the fabrication prep and welding are required.
Why Buy from Beefcake Racing?
Beefcake Racing is an authorized TRZ Motorsports dealer with fast shipping and real technical support. For help choosing the correct bung type or installation guidance, email sales@beefcakeracing.com or call 1-855-827-7223.
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