Description
Reducer spacers are essential for adapting larger bore components to smaller shaft diameters—critical when building custom fuel systems, coolant lines, or accessory brackets where precision fitment matters. These Allstar Performance spacers eliminate the guesswork with consistent wall thickness and reliable aluminum construction, giving you a clean, professional adapter solution without custom fabrication. Whether you’re plumbing a race engine or assembling a custom fuel cell installation, having the right adapter on hand keeps your build on schedule and leak-free.
- 5/8″ outer diameter
- 1/2″ inner diameter
- 1-3/4″ thick
- Aluminum construction
- Natural finish
- Sold as pair









