Sierra 18-7233 Mercury Needle & Seat - MW
Sierra 18-7233 Mercury Needle and Seat
The Sierra 18-7233 needle and seat assembly is designed for Mercury marine engines, manufactured to meet or exceed OEM specifications. This replacement part fits multiple V150, V175, V200, and V225 outboard models from 1976-1990, as well as 3.4L engines from 1984-1986. Compatible with various WH and WO carburetor series, this aftermarket component serves as a direct replacement for Mercury Marine part number 1395-7824. The needle and seat work together to regulate fuel flow in your carburetor, making proper function essential for reliable engine performance and fuel efficiency.
For Use On Engine Models:
- 3.4L 1984-1986 Carburetor: WO-3
- V150 1978-1990 Carburetors: WH-2,12,21,23,2,7,29,35,38,40,48
- V175 1976-1990 Carburetors: WH-1,4,6,7,13,17,30,34
- V200 1978-1990 (Non-EFI,XRI) Carburetors: WH-3,14,18,20,22,26,28,31,39,46
- V225 1980-1981 Carburetor: WH-15
Interchangeable with:
- GLM
- 40900
- Mercury Marine
WARNING: Cancer and Reproductive Harm - P65Warnings.ca.gov

