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Parts Selection Guide

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      Mercruiser Ignition System

      • Sierra 18-5396 Distributor Cap Replaces 815407A2
        $31.49
        $21.99

        Sierra 18-5396 Mercruiser Distributor Cap V6 Thunderbolt Ignition Sierra high-quality engine parts are designed to meet OEM specifications. Includes gasket Fits GM V-6 engines with Thunderbolt IV & V HEI Ignitions Interchangeable...

        Add to Cart
      • Sierra 18-5354 Distributor Cap
        $36.99
        $25.99

        Sierra 18-5354 Distributor Cap - Delco V8 Ignitions Sierra 18-5354 Distributor Cap fits new GM style "module in cap" distributors with V-8 applications except MPI engines with ECM 555. Use with: 18-5405 Rotor Interchangeable...

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      • Sierra 18-5250 Tune Up Kit Replaces 34235Q1
        $28.49
        $19.99

        Tune Up Kit - Delco 4 & 6 Cylinder Kit Includes: Sie-18-53111 Contact Set Sie-18-5345 Condenser Sie-18-5418 Rotor   Replaces: OMC - 0176371,5006182 Mallory - 9-29300 Johnson/Evinrude - 172527 Mercruiser - 34235T1, 34235Q1 GLM -...

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      • Sierra 18-5405 Rotor Replaces 8M6001253
        $15.49
        $10.99

        Rotor - "Module in Cap" V8 Distributors V-8 Fits New GM Style "Module In Cap" Replaces: Volvo - 3854549-7 OMC - 3854549 Mercruiser - 808484,808484-1,898253010 Crusader - 38071 Mallory - 9-29209 GLM - 71100 Redline - RL5405  

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      • Sierra Marine Distributor Cap - 18-5385
        $21.99
        $15.49

        Sierra 18-5385 Distributor Cap - Delco 4 Cyl Ignitions Sierra distributor caps are designed to meet OEM specifications. For GM 4 cyl marine engines using a Delco conventional ignition distributor. For use on Mercruiser and OMC Stern Drives...

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      • Sierra 18-5276 Tune Up Kit
        $63.49
        $44.49

        Sierra 18-5276 Tune Up Kit - Prestolite V6 Single Point Screw Cap Sierra tune up kit for Prestolite V-6 - Single Point - Screw Cap engines. Kit Includes: (1) 18-5303 Contact Set (1) 18-5347 Condenser (1) 18-5353 Distributor Cap (1) 18-5403...

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      • Sierra 18-8801-1 Wiring Plug Set Replaces 84-816761Q7
        $70.99
        $53.99

        Sierra 18-8801-1 Premium 6 Cyl. Spark Plug Wire Set For 6 cylinder GM based engines with conventional ignition systems. Features: Kit includes coil wire. Kevlar core for maximum durability and long life. Durable stainless steel wound conductor for...

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      • Sierra 18-8833-1 Wiring Plug Set Replaces 84-816761K14
        $56.99
        $39.99

        Premium Delco EST 4Cyl Spark Plug Wire Set by Sierra For Mercruiser 3.0LX 4 cylinder engines with Delco EST ignition systems. Kit includes coil wire. Kevlar® core for maximum durability and long life. Durable stainless steel wound conductor for...

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      • Sierra 18-5418 Rotor Replaces 8M6001251
        $4.99
        $3.99

        Sierra 18-5418 Rotor for Mercruiser, OMC Stern Drives Sierra high-quality engine parts are designed to meet OEM specifications. Fits GM 4 & 6 Cyl. engines with Delco Conventional Ignition. Interchangeable with: Chris-Craft 16...

        Add to Cart
      • Sierra 18-5406 Rotor Replaces 8M6001254
        $7.49
        $5.49

        Sierra 18-5406 Rotor - Delco 3.0L LX Ignitions Sierra high-quality engine parts are designed to meet OEM specifications. Use With 18-5361 Distributor Cap. Fits GM 4 Cylinder engines with Delco EST Ignition Interchangeable...

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      • Sierra 18-5107-1 Ignition Module Replaces 811637001
        $150.49
        $105.49

        Ignition Module for Mercruiser, Volvo, OMC & Crusaders For 4, 6 & 8 Cyl. Engines Replaces: Crusader 7243110 Mercury 811637001, 811637T, 811637, 802464, 850487, 811637002, 804412 OMC 3854003 Volvo 3854003 GLM 73190 Mallory 9-29800 ...

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      • Sierra Marine Distributor Cap - 18-5376
        $37.99
        $26.99

        Sierra 18-5376 Distributor Cap with Gasket - Mallory V8 Sierra high-quality engine parts are designed to meet OEM specifications. Fits Ford & GM V-8 Engines with Mallory Ignition. Interchangeable with: Chris-Craft 16...

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      • Sierra 18-5404-1 Rotor Replaces 8M6001224
        $9.99
        $7.49

        Sierra 18-5404-1 Rotor - Mallory Ignition Sierra high-quality engine parts are designed to meet OEM specifications. For Mercruiser Stern Drives, OMC Inboard, and OMC Stern Drive engines. Fits all Mallory 1998 & below Fits Ford & GM V-8...

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      • NGK BR6ES Spark Plug
        $4.49
        $2.99

        NGK BR6ES 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

      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.