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United Marine
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Tune Up Kit Delco HVS V6 Tri-Pak | United Marine 1-204
Complete engine maintenance solution designed for GM V6 engines equipped with Delco HVS distributors. This comprehensive tune up kit bundles three essential components—distributor cap, rotor, and spark plug wires—to restore optimal ignition performance and fuel efficiency. Keep your marine engine running smoothly with quality OEM-compatible parts that ensure reliable starts and consistent power delivery on the water.
Maintaining your boat requires high-quality parts that ensure reliability on the open water.1 Therefore, choosing the right ignition components is essential for peak engine performance.2 The Tune Up Kit Delco HVS V6 Tri-Pak | United Marine 1-204 offers a comprehensive solution for your marine engine.3 Furthermore, this kit simplifies maintenance by providing all necessary components in one convenient package.4
A well-tuned engine provides better fuel efficiency and smoother idling.5 Consequently, replacing worn-out ignition parts can prevent unexpected breakdowns during your trip. This United Marine 1-204 kit specifically targets the ignition system to restore lost power.6 Additionally, using premium components ensures that your engine starts quickly every time. Because of this, boaters can enjoy a stress-free experience while navigating various water conditions.
This Tri-Pak bundle includes three critical components for your Delco HVS distributor.7 First, you receive a heavy-duty distributor flat cap with brass contacts for maximum conductivity. Second, the kit features a high-quality rotor designed for precision timing. Third, it includes a MEGA-MAG 8mm SSC silicone spark plug wire set for superior insulation.8 Moreover, the set comes with an ignition coil wire and dielectric silicone grease.9 Thus, you have everything required for a professional-grade installation in one box.
Precision fitment is vital when selecting marine engine parts for your vessel. Specifically, this kit fits Mercruiser 4.3L V6 MPI engines with serial numbers 0M300000 and up.10 It is also compatible with Marine Power 4.3L V6 engines manufactured between 2005 and 2009.11 Meanwhile, the wires are designed with 135-degree boots on the cap end and 90-degree boots on the plug end.12 Always verify your ignition system type before purchasing to ensure a perfect match.
Quality craftsmanship sets United Marine apart from standard aftermarket alternatives. For instance, the use of brass contacts in the distributor cap prevents corrosion in salty environments. Similarly, the 8mm silicone wires resist high temperatures and chemical exposure under the hood. As a result, these parts offer a longer lifespan than basic factory components. Ultimately, investing in the United Marine 1-204 kit protects your engine and saves money over time.
Installing this tune-up kit is straightforward for most boat owners and mechanics. Since the kit includes wire separators and grease, you can complete the job with basic tools.13 However, make sure to follow the firing order of your V6 engine during the swap. Once installed, you will likely notice a significant improvement in throttle response and engine smoothness. Therefore, don't wait for a misfire to occur before upgrading your ignition system.

Would have been 5 stars but, I did not receive a promotional sticker with my $2000 drive unit. Just kidding, everything was great!
Great company to work with!
Ordered a Piranha Propellers Complete A-Series 4 Blade Propeller from Macomb Marine Parts and even though we’re international, it arrived in just over a week — fast and reliable service. The propeller itself is a real lifesaver. We had the same model before, and after hitting a rock that damaged two blades, we were able to swap them right on the water and make it back to the marina without issue — something you simply can’t do with a regular aluminum prop. For peace of mind we decided to buy a complete new set (hub and blades) since an impact like that could cause hidden damage, but the system really proved its worth.
3 in. Exhaust Elbow | Pleasurecraft R029001
Excellent part.
I couldn’t find a Piranha propeller dealer near me in Canada but found Macomb Marine Parts who could deliver to me. The order process was smooth and I was even contacted via email for clarification regarding blade shape and they were very helpful in choosing the best shape for my purposes.
I can’t comment on the prop’s performance yet as we haven’t had the boat in the water yet.
Perfect replacement. thank you
Perfect replacement
Perfect match to the original Chris Craft blue. Competitive price and delivery was quick
Great Product, easy to install, work well
Obtaining magnesium anodes to install on the OMC Cobra (SX-C) sterndrive, for fresh water use. Received the anode within a week of ordering the part, which is not going to be installed until Spring.
Black Liquid Electrical Tape - 4 oz. | Star Brite 084104B
As described
Very Happy!! Just what I needed!!
Outdrive spent 4 months docked in salt water with no visible rust on the stainless steel braided hoses
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Would have been 5 stars but, I did not receive a promotional sticker with my $2000 drive unit. Just kidding, everything was great!
Great company to work with!
Ordered a Piranha Propellers Complete A-Series 4 Blade Propeller from Macomb Marine Parts and even though we’re international, it arrived in just over a week — fast and reliable service. The propeller itself is a real lifesaver. We had the same model before, and after hitting a rock that damaged two blades, we were able to swap them right on the water and make it back to the marina without issue — something you simply can’t do with a regular aluminum prop. For peace of mind we decided to buy a complete new set (hub and blades) since an impact like that could cause hidden damage, but the system really proved its worth.