Offenhauser 5999DP Dual Port Intake Manifold is designed for street-performance AMC and Jeep inline-six engines. Its divided primary and secondary runner design increases mixture velocity during primary operation while providing additional airflow when the carburetor secondaries open.

Offenhauser 5999DP Features:

• Fits 1971-1981 AMC/Jeep 199, 232, and early 258 inline-six engines
• Dual Port street-performance/economy design
• Standard-bore four-barrel carburetor flange
• Recommended carburetor range of approximately 390-500 CFM
• Aluminum construction
• Natural finish
• Designed to work with stock-style exhaust manifold geometry

Offenhauser 5999DP Notes:

• No mounting hardware is included; stock hardware is used with the stock exhaust manifold
• Header installations may require manufacturer-specific hardware and component clearancing
• Offenhauser 5999K automatic-transmission installation kit (sold separately) is specified for automatic-transmission applications