TRZ Motorsports Billet Fill Cap Kit - Steel - 20960-S
Premium Steel-Weld Billet Fill Cap Kit for High-Performance Fabrication
The TRZ Motorsports Billet Fill Cap Kit (Steel Bung) is a versatile, race-ready solution for builders and fabricators who need a durable, easy-access fill point for a wide range of components. Whether you're working on fuel tanks, breather tanks, rearend housings, valve covers, dry sump tanks, or custom weight bars, this high-quality cap and bung setup delivers precision, reliability, and clean weld integration.
Each kit includes a beautifully CNC-machined, anodized, and engraved 6061 billet aluminum cap engineered with deep grip grooves for easy removal - even with gloves or in tight spaces. A rubber O-ring ensures a positive seal, while the included CNC-machined steel weld bung provides unmatched strength for applications where durability is critical.
The cap features a 2? fill opening, and the weld bung installs into a 2.25? cutout. TRZ also offers an aluminum bung option if needed, but this version comes standard with the steel weld bung for heavy-duty applications.
Performance Features
- CNC-machined 6061 billet aluminum cap with high-grip grooves
- Includes CNC'd steel weld bung (aluminum bung optional)
- Rubber O-ring creates a secure, leak-resistant seal
- 2? fill opening fits common race fabrication needs
- Bung requires a 2.25? hole for installation
- Ideal for fuel tanks, breather tanks, rearend housings, valve covers, oil fills, and more
- Durable, race-proven construction for long-term reliability
Quick Specs
- Cap Material: 6061 billet aluminum (anodized & engraved)
- Bung Material: CNC'd steel
- Fill Opening: 2?
- Hole Size Required: 2.25?
- Seal: Rubber O-ring
- Part Number: 20960-S
Frequently Asked Questions
Can this cap be used on fuel or oil systems?
Yes. It is suitable for fuel, oil, breather, and other fluid tank applications as long as proper installation is followed.
Does the kit include everything needed for installation?
Yes. The cap, O-ring, and steel weld bung are all included. Only welding and fabrication prep are required.
Why Buy from Beefcake Racing?
Beefcake Racing is your trusted source for TRZ Motorsports components, offering fast shipping and real tech support. For fitment or fabrication questions, email sales@beefcakeracing.com or call 1-855-827-7223.
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