SE122 Lower Unit Bravo One | SEI 90-122-02 Exhaust Flapper Valves Replaces CRU-20310

Replaces CRU-20310

Service Kit F4B-8/8007

but they add a little extra performance boost from the inclusion of a Piranha Hydrofoil Stabilizer

Replaces Guest 2608A

SE122 Lower Unit Bravo One | SEI 90-122-02 Exhaust Flapper Valves Replaces CRU-20310SE122 Lower Unit Bravo One SEI 90 122 02 SE122 Lower Unit replaces MerCruiser's BRAVO ONE sterndrives 90 122 02 This item is to replace 1992 and up Bravo One's with the oil passage. It can be modified to backfit 1988 1991. This unit has side and low water intakes. For side water intakes only see SE121. Brunswick Corporation is the Original Equipment Manufacturer (OEM). Sterndrive Engineering, Inc. (or SEI) has no affiliation with the Brunswick