Do I need to replace the gaskets when installing this manifold?

Yes. Old gaskets compress and won't seal properly against the new manifold. Use fresh gaskets and torque fasteners to your vehicle's service manual spec for a reliable seal.

Can I reuse my original fuel injectors and sensors with this manifold?

Most factory injectors and temperature sensors are compatible, but verify your specific configuration before removal. Some sensor ports may vary — test-fit and confirm mounting before finalizing installation.

What surface prep is needed before bolting this on?

Clean the mounting surfaces on the cylinder head and block with a gasket scraper to remove old gasket material and debris. Wipe with a clean cloth before assembly. Primer or paint is not required for internal engine components.