Every boater knows that feeling when your outboard engine doesn't quite start right or sputters when you need it most. That hesitation can turn a perfect day on the water into a frustrating experience. The truth is, your spark plugs are one of the most critical components for reliable marine engine performance, and worn-out plugs can cause everything from hard starts to poor fuel economy.
These premium iridium spark plugs are engineered with advanced materials that deliver superior performance compared to standard copper or platinum plugs. The fine-wire iridium center electrode provides a more focused spark, resulting in better combustion and more efficient fuel burn. This means easier cold starts, smoother idling, and improved throttle response across all RPM ranges.
Specifically designed for Mercury & Mariner 4-stroke outboard engines, these plugs fit perfectly in 75HP, 80HP, 90HP, 100HP, and 115HP models with 1.7L engines, including the 100 FourStroke BEL 0P401000 and up. Each plug is a direct replacement for LFR4A-E 6499, 33-898829001, and 33-8M0157328 part numbers, ensuring a hassle-free installation without any modifications needed.
Imagine pulling up to your favorite fishing spot and having your engine start on the first turn of the key. Picture smooth acceleration when you're pulling skiers or heading to your favorite cove. These plugs deliver consistent performance whether you're running at trolling speeds or opening up the throttle across open water. The durable construction ensures reliable season after season, so you can spend more time enjoying the water and less time worrying about engine maintenance.
With just a wrench and basic mechanical knowledge, you can install these plugs yourself in under 30 minutes. The plug-and-play design means no special tools or adjustments are required. Simply remove your old plugs, gap these to the manufacturer's specifications, and install. Four plugs in each package give you everything needed for a complete tune-up of your outboard engine.
