Intake System

Indmar Marine Intake Manifold Gasket – 5.7L Vortec Engine | Part #556099 ⚠️ Important: 2 gaskets required per engine — order quantity 2 Ensure a perfect intake seal on your Indmar 5.7L Vortec engine with this genuine Indmar intake manifold gasket. A critical sealing component that sits between the intake manifold and cylinder head — maintaining the correct air/fuel mixture delivery into your engine. A failed intake gasket is one of the most common causes of vacuum leaks, rough running, and coolant loss on the 5.7L Vortec marine engine. Compatible with: Indmar 5.7L Vortec marine engines fitted to Malibu, Moomba, Supra, and Tige boats. Contact us to verify fitment for your specific model year before ordering.

Indmar Marine Lower Intake Manifold – 5.7L PFI E-Coat | Part #531197E Restore peak engine performance with this genuine Indmar lower intake manifold for the 5.7L Port Fuel Injection (PFI) engine, featuring a durable E-coat (electrocoat) finish for superior corrosion protection in the demanding marine environment. The lower intake manifold is one of the most significant components on your engine — directing the air/fuel mixture from the throttle body into each cylinder for combustion. Compatible with: Indmar 5.7L PFI (Port Fuel Injection) marine engines fitted to Malibu, Moomba, Supra, and Tige boats. Contact us to verify fitment for your specific model year before ordering.