Used OEM Mercruiser Alpha I Generation II 4.3 V6 Upper Unit- 1.81:1 Alpha 1 Gen

Part: Used OEM Alpha I Gen II Mercruiser inboard/outboard upper unit.  Fits 4.3L V6's from 1991-2024 which is 1.81:1 ratio.  All our gearcases have been tested by our mechanics.  PLEASE be sure the unit we have will fit your particular configuration of year, model, horsepower and drive shaft length 

Please note this is an OEM Mercury upper unit...not SEI aftermarket trash :)

Condition:  In Excellent Condition.  New water pump & gear lube installed. Ready to bolt-on.  Please see pictures below.  

Inventory: Turk

Payment: PayPal, Visa/MasterCard by phone, Ebay payments, real money in person. Payment is due in 5 days. 

Location:  Biloxi, Ms. 39532

S&H: Shipping in the continental U.S. FedEx Ground will be $99.  Most international locations shipping will be $299.  Local pick-up is always fine.    

**NOTE: Your item will come EXACTLY as pictured.

JB 11/6/2026