The Edelbrock #4431 Signature Series Valve Covers are designed for AMC/Jeep 290-304-343-360-390-401 V8 '67-91 applications. Engineered for function and styled for great looks, Signature Series valve covers have stock-style breather baffles that prevent oil passage to the PCV valve. These quality valve covers accept all emissions equipment, including PCV valve holes. Rubber grommets for the breather and PCV valve holes are included. Matching breathers sold separately.