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      Mercruiser Ignition System Product Listings

      • Sierra 18-5278 Tune Up Kit Replaces 850484T3
        $49.49
        $35.59

        Sierra 18-5278 Tune Up Kit Sierra replacement tune up kit for Delco EST V-6. Includes distributor cap and rotor Interchangeable with: CDI E66-0035 GLM 71820 Mallory 9-29321 Mercruiser Stern...

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      • Sierra 18-5303 Contact Set Replaces 8M6001219
        $15.59
        $12.19

        Sierra 18-5303 Contact Set Sierra replacement contact set for all Prestolite engines. Fits Ford & GM 4, 6 & 8 Cylinder Engines with Prestolite Conventional Ignition. Interchangeable with: Chrysler...

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      • Sierra 18-5246 Tune Up Kit Replaces 898253T28
        $129.49
        $93.29

        Sierra 18-5246 Tune Up Kit for Mercruiser V6 Sierra high-quality engine parts are designed to meet OEM specifications. For Late Model V-6, 4.3L (Alpha/Bravo) MPI Kit Contains: (1) 18-5245 Rotor (1) 18-5243 Distributor...

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      • Sierra 18-5345 Condenser Replaces 8M6001218
        $8.89
        $6.89

        Sierra 18-5345 Condenser - Prestolite Ignitions Sierra high-quality engine parts are designed to meet OEM specifications. For all Prestolite Ignition Fits GM 4 & 6 Cyl. Engines with Delco Conventional Ignition Interchangeable...

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      • Mercury - Mercruiser 89491-6 Key 1F
        $5.99
        $4.99

        Mercury - Mercruiser 89491-6 Key 1F Genuine OEM Mercury-Mercruiser part. Special Order Item: This product is ordered specifically for your application. To help ensure proper fitment, please confirm compatibility with your engine model using our Parts...

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      • Sierra 18-5472 Coil
        $118.69
        $92.59

        Sierra 18-5472 Hi-Performance Ignition Coil Super low 0.6 ohm resistance coil Designed for use with Ignitor II Hi-Performance Electronic Conversion Kits Compatible with capacitive discharge systems Oil filled for better cooling and long life Low...

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      • Quicksilver 300-8M0079202 Ignition Coil Kit
        $130.79
        $108.99

        Quicksilver 300-8M0079202 Ignition Coil Kit Genuine OEM ignition coil is engineered for GM V6 and V8 MerCruiser sterndrive and inboard engines with Thunderbolt IV and V ignition systems, ensuring efficient spark delivery and engine reliability...

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      • Sierra 18-5408 Rotor Replaces 8M0062084
        $11.39
        $8.89

        Sierra 18-5408 Rotor - "Module in Cap" V6 Distributors Sierra replacement rotor fits New GM Style "Module In Cap" Distributors V-6 Engines with Delco HEI Ignition. Use with: 18-5362 Distributor Cap Interchangeable...

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      • Sierra 18-5251 Tune Up Kit Replaces 0173619
        $45.89
        $32.99

        Tune Up Kit - Mallory 8 Cylinder Tall Distributor Cap Kit Includes: Sie-18-5314 Contact Set Sie-18-5338 Condenser Sie-18-5404-1 Rotor   Replaces: OMC - 0173619 Mallory - 9-29301 GLM - 72620 Redline - RL5251  

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      • Mercury - Mercruiser 300-8M0077471 Ignition Coil
        $202.19
        $168.49

        Quicksilver 300-8M0077471 Ignition Coil Quicksilver 8M0077471 12-volt ignition coil is designed to deliver reliable ignition for select Mercury and Mariner outboards and MerCruiser sterndrives, enhancing engine performance and efficiency...

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      • Sierra 18-8809-1 Wiring Plug Set Replaces 84-816761Q8
        $84.59
        $60.89

        Sierra 18-8809-1 Mercruiser Spark Plug Wire Set For an inline 6 cyl. engine with conventional ignition system. Used on Mercruiser Stern Drives. Kit includes coil wire. Sierra aftermarket parts are manufactured to meet or exceed OEM requirements...

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      • Sierra 18-5338 Condenser Replaces 8M6001217
        $10.89
        $8.49

        Condenser - Mallory Ignitions Used on Mercruiser, OMC, Volvo, Pleasurecraft, Crusader and Chris-Craft Marine Engines. Replaces: Mercury - 391-898253001 OMC - 0382136 Volvo - 835308 GLM - 70580 Mallory - 9-29101 OMC - 0508934 Redline - RL5338  

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      • Sierra 18-5362 Distributor Cap Replaces 850484T2
        $38.09
        $27.39

        Sierra 18-5362 Distributor Cap for GM 6 Cylinders Sierra 18-5362 high-quality Distributor Caps are for use with 18-5408 rotors. For use with Mercruiser Stern Drives, OMC Stern Drives, and Volvo Penta engines. Fits new GM style "module in cap"...

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      • Mercury - Mercruiser 808483Q-1 Distributor Cap And Rotor
        $67.79
        $56.49

        Quicksilver 808483Q1 Distributor Cap Kit For GM V8 MerCruiser Engines With Delco HEI (Pre-1997) Quicksilver 808483Q1 Genuine OEM Distributor cap kit for 1997 and older marinized GM V8 MerCruiser engines with Delco HEI ignition systems. Refer to your...

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      • Sierra 18-5158 Mercury Ignition Coil
        $179.89
        $129.59

        Sierra 18-5158 Mercury Ignition Coil Sierra replacement ignition coil for Mercury Outboards, Mercury Race Outboards, and Mercury Race Stern Drives. High quality brass secondary post for superior corrosion protection Quality Heatsinks for superb heat...

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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.