Give your project the finishing touch with a fuel filler cap that combines authentic vintage styling with modern craftsmanship. Inspired by the classic racing fuel caps found on iconic competition cars, the Retno Multi-Piece Fuel Cap is precision hand-assembled in the USA and built from premium materials for exceptional durability and performance.

Unlike inexpensive die-cast reproductions, every Retno fuel cap is sand cast from 356-T6 aluminum, just like the original racing caps. The result is a stronger, more authentic component with the timeless appearance that belongs on vintage race cars, custom builds, and high-end restorations.

Designed for versatility, this fuel cap is ideal for a wide range of applications, including Lola, Can-Am race cars, vintage race cars, Mustang, Corvette, Cobra, Ferrari, hot rods, custom street rods, and countless custom projects.

A standout feature of the Retno design is its integrated safety wire provision, allowing the cap to be safety wired or secured with a zip tie to the operating lever—an important requirement for many vintage racing organizations and a detail often overlooked by other manufacturers.

Each fuel cap arrives complete with mounting hardware, base gasket, cap gasket, and your choice of vented or non-vented configuration. Every assembly is fully rebuildable and carefully hand assembled in Augusta, Georgia, ensuring the quality and attention to detail that Retno is known for.

Features

• Authentic multi-piece vintage racing fuel cap design
• Sand cast from premium 356-T6 aluminum—never die cast
• Hand assembled in Augusta, Georgia, USA
• Available in vented or non-vented versions
• Fully rebuildable construction
• Integrated safety wire/zip tie provision for vintage racing compliance
• Includes cap gasket, base gasket, and mounting hardware
• High-quality tumbler-finished aluminum ready to install or customize
• Perfect for race cars, restorations, hot rods, custom builds, boats, and more

Specifications

• Material: Sand Cast 356-T6 Aluminum
• Finish: High-quality tumbler finish
• Hose Neck Diameter: 3.00" OD
• Cap Diameter: 4.75" OD
• Mounting Base Diameter: 5-3/16"
• Overall Mounted Height: 2.400"
• Flange Thickness: 1/4"
• Hose Barb Length: 2-3/8" (measured from back of flange)
• Bolt Pattern: 4-bolt on 4.75" bolt circle
• Venting: Vented or non-vented (selected at checkout)

What's Included

• Retno Multi-Piece Fuel Filler Cap
• Base gasket
• Cap gasket
• Mounting hardware

Built with authentic materials, race-proven features, and handcrafted quality, the Retno Sand Cast Fuel Filler Cap is the perfect choice for builders who refuse to compromise on appearance or performance.

MADE IN THE U.S.A

Customizations are available in our SOS (Specialty Order Shop), please send us all inquiries!