EEX-2055 Exhaust Manifold kit for MACK E7 engine application

It includes an exhaust manifold plus the needed hardware: four flanged locking nuts and four studs. This exhaust manifold kit is intended to provide the core truck engine exhaust parts commonly replaced together. Having matched hardware helps ensure proper fit and clamping when installing on compatible applications.

PAI EEX-2055 is intended for Mack E7 / E-TECH engine applications, but fitment can vary by engine configuration and manifold style. Verify your engine family and the manifold mounting details before installation to confirm it matches your Mack E7 exhaust manifold needs. If your truck has prior modifications, compare the old part and fastener style to avoid mismatches.

Replacing the manifold and fasteners together can improve sealing at the head and reduce the chance of recurring exhaust leaks. Fresh studs and flanged locking nuts can help maintain clamp load under heat cycling, which is critical for truck engine exhaust parts. It’s a practical choice when refreshing Mack E7 engine parts during routine service or after a failure.