Product Description

Brand new, genuine Mercury Marine / Mercruiser Check Valve Assembly. This is a factory original equipment item, not aftermarket.
- Replacement check valve for Mercury inboard gas engines, outboard gas engines, Quicksilver manufactured engines and re-manufactured engines
- For use with closed cooling systems
SKU# 21-864206A1
Fits:
| Applications Where Used: |
|---|
| 350 MAG MPI ALPHA/BRAVO |
| 350 MAG MPI ALPHA/BRAVO EC |
| 350 MAG MPI HORIZON ALPHA/BRAVO |
| 350 MAG MPI HORIZON ALPHA/BRAVO EC |
| 350 MAG MPI HORIZON MIE |
| 350 MPI ALPHA |
| 357 HRZ 630A BOBTAIL RM |
| 377 MAG MPI BRAVO |
| 377 MAG MPI BRAVO EC |
| 4.3L MPI ALPHA/BRAVO |
| 4.3L MPI ALPHA/BRAVO EC |
| 4.3L MPI ALPHA/BRAVO( 262 C.I.D. MULTI PORT INJECTION ) |
| 5.0L MPI ALPHA/BRAVO |
| 5.0L MPI ALPHA/BRAVO EC |
| MX 6.2L MPI HORIZON BRAVO |
| MX 6.2L MPI HORIZON MIE |
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