Description
Comparison points and tradeoffs
When comparing ILFR6G-E 4212 Laser Iridium Spark Plugs | Set of 6 | Fits Mercury Verado L6 200-400 HP Outboard Engines 400R Boat with other Spark Plugs options, use this source-backed detail as the primary discriminator: Compatible with Mercury Verado L6 engines (200HP, 225HP, 250HP, 275HP, 300HP, 350HP, and 400HP), this set of six spark plugs is an essential maintenance upgrade for maintaining peak engine efficiency and reliability.
Use this second fact to evaluate the tradeoff: Application note: Compatible with Mercury Verado L6 engines (200HP, 225HP, 250HP, 275HP, 300HP, 350HP, and 400HP), this set of six spark plugs is an essential maintenance upgrade for maintaining peak engine efficiency and reliability. A third point to compare across alternatives is: Application note: Compatible with Mercury Verado L6 Engines: Designed for 200HP, 225HP, 250HP, 275HP, 300HP, 350HP, and 400HP outboard engines.
Alternative-selection boundary
Choose an alternative when its stated identifiers, application, package, or specifications better match the requirement; no unverified competitor claim is introduced here.
Complete source-backed product details
The NGK ILFR6G-E 4212 Laser Iridium Spark Plugs are specifically designed for Mercury Verado L6 200-400 HP outboard engines, delivering optimal ignition performance, fuel efficiency, and durability in demanding marine environments. With a fine-wire iridium center electrode, these spark plugs provide precise ignition, improved throttle response, and enhanced fuel combustion, making them the ideal choice for boating enthusiasts, professional fishermen, and marine service professionals. Built with laser-welded iridium technology, these spark plugs offer exceptional longevity and wear resistance, significantly reducing the need for frequent replacements. The corrosion-resistant construction ensures reliable operation in saltwater and freshwater applications, maintaining consistent ignition performance and preventing misfires. Compatible with Mercury Verado L6 engines (200HP, 225HP, 250HP, 275HP, 300HP, 350HP, and 400HP), this set of six spark plugs is an essential maintenance upgrade for maintaining peak engine efficiency and reliability.
Source product highlights
About this item
- Premium NGK Laser Iridium Spark Plugs: Engineered for maximum ignition efficiency, durability, and fuel economy.
- Compatible with Mercury Verado L6 Engines: Designed for 200HP, 225HP, 250HP, 275HP, 300HP, 350HP, and 400HP outboard engines.
- Superior Ignition Performance: Fine-wire iridium center electrode ensures precise ignition, improved throttle response, and reduced misfires.
- Long-Lasting Durability: Laser-welded technology enhances wear resistance, extending plug life for long-term reliability in marine environments.
- Corrosion-Resistant & Marine-Grade: Built to withstand harsh saltwater conditions, ensuring consistent performance and reduced maintenance.




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