This gasket kit seals the Hi-Ram plenum using an O-ring cord design.
Specifications:
- Component Type: Gaskets and Seals
- Application: Hi-Ram Plenum
- Warranty: Manufacturer's Limited 90-Day Warranty
- Part Number: 508-21
Compliance: This part is legal for sale and use on Racing Use Only Vehicles — competition vehicles that are not registered and never operated on the street. It is against the law to install this part on an Emissions Controlled Vehicle (1966-and-newer California-certified or 1968-and-newer federally certified vehicles).
FAQ
What does this gasket kit seal?
The Hi-Ram plenum, using an O-ring cord design.
Is this part legal for street use?
No. It's legal for sale and use only on Racing Use Only vehicles — competition vehicles that are not registered and never operated on the street. Installing it on an emissions-controlled vehicle (1966-and-newer California-certified or 1968-and-newer federally certified) is against the law.
What part number is this gasket kit?
508-21.

