Replaces original equipment GM (General Motors) breather #6421868 on 1965-1967 GM (General Motors) big block engines.
- Internally baffled with filter
- 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.
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