Replaces original equipment GM (General Motors) breather #6421868 on 1965-1967 GM (General Motors) big block engines.
Product Features:- Internally baffled with filter
- Fits valve cover openings with 1.22 dia.
- Fits valve cover openings with 1.22 dia.
- Replaces OEM - GM breather #6421868 on 1965-67 GM Big Blocks
- 2-1/8 tall x 2-1/2 dia.
- 2-1/8 tall x 2-1/2 dia.