This is an impeller housing hat fits many Volvo Penta raw water pumps. It comes with 4 stainless hex bolts and the 4 small o-rings. This housing will help your pump restore low output from grooving which can be identified when the interior surface of the pump is not flat. This is caused by impeller wear, high hours, or operating your boat in shallow water that is sandy or has a lot of silt or dirt. This impeller housing is used on pumps that need the 21213664 impeller.
Fits:
21212800 and all preceding part numbers (8.1 Liter Engines)
21255090 and all preceding part numbers (4.3, 5.0 and 5.7 Liter Engines with dual V Belts)
21212799 and all preceding part numbers (4.3, 5.0 and 5.7 Liter Engines with a serpentine Belt)
On Feb-23-16 at 10:10:43 PST, seller added the following information:
