The Aeromotive water pump backing plate for 3rd-gen 5.7L and 6.1L Hemi engines is a replacement backing plate specified for those Hemi powerplants. It installs behind the water pump to restore the factory backing interface on the defined engine applications, offering a vehicle-specific replacement part where that particular backing plate is required for proper assembly.
Aeromotive 3rd Gen 5.7L/6.1L Hemi Water Pump Backing Plate