Mercury Marine Ignition Coil 8M0178581
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Mercury Marine Ignition Coil
The Mercury Marine Ignition Coil (8M0178581) is a genuine OEM factory replacement part designed for select Mercury outboard and MerCruiser sterndrive engine applications. This part directly supersedes the previous Mercury part number 889925, making it the current production coil for engines that originally used that earlier designation. As an exact OEM component, it meets all original manufacturer specifications for fit, form, and function, ensuring reliable ignition system operation.
Sourced directly from Mercury Marine, this coil is not an aftermarket or third-party reproduction. Purchasing an authentic OEM part eliminates concerns about compatibility and quality that can arise with generic alternatives. The part is compact and lightweight, with shipping dimensions of 4.25 inches in length, 3.75 inches in width, and 3.20 inches in height, and a shipping weight of 0.69 lbs.
According to parts diagram references, this ignition coil appears in the cylinder head section for MerCruiser 8.1L 496 CID HO crate engine configurations (serial range 1G800000 through 1G899999). Boaters and marine technicians should verify fitment using their engine's serial number prior to ordering to confirm compatibility with their specific engine configuration.
Key Features
- Genuine Mercury Marine OEM ignition coil — not aftermarket
- Supersedes earlier Mercury part number 889925
- Compact design: 4.25" L x 3.75" W x 3.20" H, 0.69 lbs shipping weight
- Referenced in MerCruiser 8.1L 496 CID HO cylinder head parts diagrams
- Backed by Mercury Marine's limited parts warranty
- Sold new in original condition by authorized Mercury Marine dealers
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