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      • Sierra 18-5273 Tune Up Kit Replaces 805759Q3
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        Sierra 18-5273 MerCruiser V8 Thunderbolt Tune Up Kit

        $55.49
        $38.99

        Sierra 18-5273 MerCruiser Tune Up Kit for V8 Thunderbolt HEI Ignitions  Sierra high-quality engine parts are designed to meet OEM specifications. Fits GM V-8 engines with Thunderbolt IV & V HEI ignitions. Voltage Regulator 18-5710 Kit...

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      • Sierra 18-5281 Tune Up Kit Replaces 808483Q2
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        Sierra 18-5281 MerCruiser V8 Tune Up Kit

        $57.49
        $40.49

        Sierra 18-5281 Tune Up Kit Delco Est V8 Used on MerCruiser, Indmar and Pleasurecraft Marine engines. GM V-8 Delco EST Fits 1996-2005 Indmar Monsoon, MCX, RPT & Hammerhead Engines Includes: 18-5354 Distributor Cap 18-5405...

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      Mercruiser OEM Engine Parts Finder

      Mercruiser Tune Up Kits

      We carry a variety of Mercruiser products for your next tune up. Shop our Mercruiser tune up kits, distributor caps, and rotors. If you need a replacement part, we carry replacements for Mercruiser distributor caps, rotors, rotor assemblies, condensers, and contact sets. Exchanging your worn parts for new ones will give your boat a smoother and more efficient ride.