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Warranty
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Knock Sensor. For Mercruiser Stern Drive, and Mercury Marine/Sport Jet. Fits: MCM V-6 & V-8 (305, 350 & 496 CID) MPI Engines With ECM 555. Replaces Mercruiser 878187, 8M6003194, and Mercury 878187. Premium Quality For Longer Life. Meets or exceeds manufacturer's recommended specifications. Backed by Sierra's limited lifetime warranty.
| Brand | NAPA |
| VMRS Code | 033002025 |
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