Description
Reliable brake and fuel line connections are foundational to any high-performance build—and cheap fittings will eventually fail when it matters most. These Allstar Performance inverted flare nuts deliver consistent, leak-free sealing with stainless steel construction that resists corrosion in harsh engine bay environments. Whether you’re building a race car or upgrading your daily driver’s brake system, this 4-pack gives you the precision fittings needed for professional-grade results.
- Inverted flare design
- 5/8-18 male thread
- 3/8″ hardline compatible
- Stainless steel construction
- Set of 4 nuts
- Natural finish
- MPN: ALL50143






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