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Parts Selection Guide

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      Mercruiser Ignition System

      • Sierra 18-8808-2 Wiring Plug Set Replaces 84-816761Q6
        $70.99
        $49.99

        Mercruiser 4cyl Premium Spark Plug Wire Set by Sierra For 4 cylinder 224CID Mercruiser engines with conventional ignition systems.   Kit includes coil wire. Kevlar® core for maximum durability and long life. Durable stainless steel wound...

        Add to Cart
      • Sierra 18-5271 Tune Up Kit
        $64.99
        $45.49

        Tune Up Kit Mallory V8 Single Point Marine Engine Ignition Systems Kit includes: Sie-18-5314 Contact Set Sie-18-5338 condenser Sie-18-5376 Distributor Cap Sie-18-5404-1 Rotor   For Use On: Mercruiser, OMC, Pleasurecraft, Indmar, Crusader and...

        Add to Cart
      • Sierra Marine Distributor Cap - 18-5361
        $14.49
        $10.99

        Sierra 18-5361 Distributor Cap for GM 4 Cylinder Engines Sierra high-quality engine parts are designed to meet OEM specifications. Fits new GM "Module in Cap" 4 Cyl Distributors. For 3.0L LX Interchangeable...

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      • Champion RN5C Spark Plugs
        $3.99
        $2.49

        Champion RN5C Marine Spark Plug Champion marine spark plugs are quality OEM replacements. The Champion RH12 Spark Plug features a copper core electrode that provides increased conductivity and heat control for good overall wear. These marine spark plugs...

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      • Champion RS9YC Spark Plugs
        $3.49
        $2.49

        Champion RS9YC Copper Plus Marine Spark Plug Champion marine spark plugs are quality OEM replacements. The Champion RS9YC Spark Plug features a copper core electrode that provides increased conductivity and heat control for good overall wear. These...

        Add to Cart
      • Sierra 18-5297 Electronic Conversion Kit
        $220.49
        $154.49

        Sierra 18-5297 Electronic Conversion Kit - 4 Cyl GM Ignitions Sierra electronic conversion kit for 4 Cylinder GM Engines. Replaces points & condensers for true solid state ignition Uses standard coil, cap & rotor Easy to install, one-piece,...

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      • Champion RV12YC Spark Plugs
        $3.49
        $2.49

        Champion RV12YC Copper Plus Marine Spark Plug Champion marine spark plugs are quality OEM replacements. The Champion RV12YC Spark Plug features a copper core electrode that provides increased conductivity and heat control for good overall wear. These...

        Add to Cart
      • Sierra 18-8835-1 Spark Plug Wire Set
        $94.99
        $66.49

        Sierra 18-8835-1 Spark Plug Wire Set Sierra replacement spark wire set for Mercruiser Stern Drives. Sierra’s spark plug wire sets are designed exclusively for marine engines and are the highest quality marine sets available anywhere in the...

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      • Sierra 18-5283 Tune Up Kit
        $93.49
        $70.99

        Tune Up Kit - 4 Cyl Mallory for Mercruiser,OMC,Inmar For Mallory Single Point In-line 4 Kit Contains: 18-5397 Dist. Cap 18-5404-1 Rotor 18-5338 Condenser 18-5314 Contact Set Replaces: Mallory - 9-29324  

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      • Sierra 18-8811-1 Wiring Plug Set Replaces 84-816761Q13
        $53.99
        $40.99

        Sierra 18-8811-1 Wiring Plug Set For all 4 Cyl. engines with a digital ignition system. Used on Mercruiser and OMC marine engines. Kit includes 5 wires. Key Features: Kevlar core for maximum durability and long life Durable stainless steel wound...

        Add to Cart
      • Champion RL82C Spark Plugs
        $2.99
        $1.99

        Champion RL82C Marine Spark Plugs Champion marine spark plugs are quality OEM replacements. The Champion RL82C Spark Plug features a copper core electrode that provides increased conductivity and heat control for good overall wear. These marine spark...

        Add to Cart
      • Sierra 18-5466 Ignition Coil
        $108.99
        $76.49

        Sierra 18-5466 Hi-Performance 1.5 ohm Ignition Coil for Mercruiser, OMC, Volvo 1.5 ohm (Oil Filled) black - 8 cylinder. Flame Thrower 40,000 volt Coil Designed for use with the original ignitor Electronic Conversion Kits Can Be used with other...

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      • Sierra 18-5369 Distributor Cap Replaces 392-6318T
        $38.49
        $29.49

        Sierra 18-5369 Distributor Cap with Gasket Sierra high-quality engine parts are designed to meet OEM specifications. Fits Ford V-8 with Prestolite Ignition with Clip Hold Down Cap For Presolite, all 7011 Includes: 18-5399 Distributor Cap...

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      • NGK AR6FS Spark Plug
        $6.99
        $4.99

        NGK AR6FS Spark Plug NGK Standard Spark Plugs are proven technology that offer reliable performance. Standard spark plugs are treated with corrosion-resistant plating to ensure ease of installation and removal. The solid copper core offers superior heat...

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      • NGK BUH Spark Plug
        $6.99
        $4.99

        NGK BUH Spark Plug NGK Standard Spark Plugs are proven technology that offer reliable performance. Standard spark plugs are treated with corrosion-resistant plating to ensure ease of installation and removal. The solid copper core offers superior heat...

        Add to Cart
      • Sierra 18-5296-2 Electronic Conversion Kit
        $238.99
        $166.99

        Sierra 18-5296-2 Electronic Conversion Kit - Mallory V8 Distributors Fits most Mallory YL or YD 8 cylinder distributors with clockwise or counter clockwise rotation. Used on some Mercruiser Marine and OMC engines. Replaces points & condensers for...

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      • NGK BPR5EFS-13 Spark Plug
        $11.99
        $8.49

        NGK BPR5EFS-13 Spark Plug NGK Standard Spark Plugs are proven technology that offer reliable performance. Standard spark plugs are treated with corrosion-resistant plating to ensure ease of installation and removal. The solid copper core offers superior...

        Add to Cart
      • Sierra 18-5407 Rotor Replaces 392-6326T
        $13.99
        $10.49

        Rotor - Prestolite V8 Ignitions Replaces: OMC - 980892 Mercury - 392-6326,392-6326T Pleasure Craft - R103003 Crusader - 41059 Chrysler - 1658535 Mallory - 9-29201 GLM - 71050 Pro Marine - 82866 Redline - RL5407  

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      Mercruiser OEM Engine Parts Finder

      Mercruiser Ignition Tune Up

      The condition of your Mercruiser ignition system is critical to its performance. Over time your outboard’s electrical components can be effected by wear, corrosion or system leaks. A faulty ignition can scuttle a planned outing on the water, and possibly require an expensive repair. When your Mercruiser is hard to start or will not start, Wholesale Marine offers these suggestions for troubleshooting your ignition system. This procedure enables owners to fault trace if it requires a simple fix or a significant repair.

      When it’s Time to Tune Up Your Mercruiser Ignition System

      1)  First, check the obvious. Is there plenty of gas in the tank? Are all the fluids at the correct levels? Lastly, make sure all the wires are corrosion-free and connected properly. Try to start the engine. A quick fix may be all that it required.

      2)  If there is no start from the engine, a faulty or worn spark plug may be the culprit. Pull the plug and ensure that it is clean. If it is wet, this may be an indication of a bigger issue. If the plug is dry but discolored, it may have been the wrong type of plug for your motor. Check your owner’s manual and install the right plug.

      3)  If the plug is working disconnect the black/yellow wire from the engine to check the kill circuit. If the engine still does not start, the white/green and green/white stator wires need to be replaced. This will impact the engine starting cylinder. If the engine still will not start, the stator is bad and requires replacement.

      When it is time to troubleshoot or tune-up your Mercruiser ignition system, know that Wholesale Marine has everything you need. We offer a competitive pricing guarantee and most items flat rate ship the same day. Returns are stress free and we welcome your questions. Make us your one-stop boating shop! Join our Loyalty Program and use the points toward any future purchases. We’re here to take your call Monday through Friday from 9:00 AM until 6:00 PM EST at (877) 388-2628.