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This Ignition Coil is a replacement ignition coil compatible with Mercury 2.5L and 3.0L DFI engines and matches OEM Part# 339-856991A1, 339-850227, 18-5187.
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I needed a forklift part and wasn’t sure which one fit. They asked for the model and serial number, got back to me quickly, and made sure I ordered the right one. Really helpful.
Randy W. — Verified customer
Product Overview
This Ignition Coil delivers reliable spark for Mercury 2.5L and 3.0L DFI outboard engines. Designed as a direct replacement, this Ignition Coil ensures consistent ignition performance and fuel efficiency. Ideal for marine applications requiring a robust, corrosion-resistant ignition component.
Key Features & Performance
- Direct fit replacement for Mercury 2.5L and 3.0L DFI marine engines
- High-voltage output for reliable ignition even under load
- Built with corrosion-resistant materials for harsh marine environments
- Meets or exceeds OEM specifications for consistent performance
- Simple plug-and-play installation with no modifications needed
Fitment & Compatibility
- Mercury 2.5L DFI outboard engines
- Mercury 3.0L DFI outboard engines
Common Uses
- Replacing a failed or worn ignition coil on Mercury DFI outboards
- Restoring engine power, smooth idle, and fuel economy
- Performing routine ignition system maintenance on marine engines
- Troubleshooting misfire or hard-start conditions caused by coil failure
- Upgrading to a reliable OEM���spec coil during engine rebuilds
Technical Specifications
- Part Number(s): 339-856991A1, 339-850227, 18-5187
Frequently Asked Questions
Q: Is this ignition coil compatible with my Mercury 2.5L DFI outboard? A: Yes, this coil is designed as a direct replacement for Mercury 2.5L and 3.0L DFI engines using OEM part numbers 339-856991A1, 339-850227, or 18-5187.
Q: Does this coil come with any warranty? A: This ignition coil is covered by a standard manufacturer defect warranty; specific terms vary by seller, so please check your order details for warranty information.
Product appearance and specifications may vary slightly by batch. Compatibility may vary by serial number. Verify fitment before purchase.