00:00Hey everyone, if you've ever dealt with an overheating engine out on the water,
00:03you know that keeping your cooling system in check is everything.
00:07Thermostats are super cheap insurance against massive repair bills,
00:10so I spent some time digging through user reviews, flow specs, and real-world durability
00:15to track down the top 5 thermostat kits for outboard engine cooling that offer the absolute
00:19best bang for your buck. Kicking things off, we have the K-Series inline thermostat housing kit,
00:25which is a massive favorite for anyone running custom powerhead cooling setups or hybrid swaps.
00:31What makes this piece stand out is its solid billet aluminum inline design,
00:35giving you the flexibility to cleanly rot your coolant lines without dealing with bulky,
00:39restrictive stock housings. At just $25.25 with a stellar 4.9-star rating from thousands of buyers,
00:47it's a rugged, leak-free upgrade if you need reliable temperature regulation on a customized build.
00:53Next up is the LR073372 Water Outlet Thermostat Assembly, coming in at an unbelievable price of
01:00only $8.99. While originally designed for heavy-duty automotive applications, marine builders
01:07frequently swap this full housing unit into marinized inboard-outboard setups because of
01:11its tight factory seal and high-volume flow design. With a flawless 5-star rating, grabbing a complete,
01:17durable housing and thermostat combo for under 10 bucks is an absolute steal for your routine
01:22maintenance. Moving into our third spot, we're looking at the 10 and oil cooler thermostat
01:27sandwich plate adapter, priced at $25.74. While water jackets get all the attention,
01:34keeping your engine oil within the ideal temp range prevents premature wear under heavy loads,
01:39and this unit features an integrated thermal bypass valve that automatically routes oil through
01:43your cooler only when needed. Backed by a 4.9-star rating, the clean machining and reliable heat
01:49management make it well worth the money for extended wide-open throttle runs.
01:54In the fourth spot is a true marine-specific classic, the 50, 60, and 70-degree Celsius outboard
02:00thermostat tailored for Mercury and Mariner V6 engines from 135 all the way to 200 horsepower.
02:07Priced at an ultra-affordable $7.92, its biggest highlight is the precise OEM fitment and the option
02:13to choose your preferred opening temperature to match cold lakes or warmer coastal waters.
02:18Sporting over 4,000 units sold and a solid 5-star rating, this is the easiest, most reliable drop-in
02:24fix to prevent your big V6 from running cold or boiling over. Finally, wrapping up at number 5,
02:31we have the 50-degree Celsius thermostat assembly made specifically for smaller Tohatsu outboards
02:36ranging from 2 up to 40 horsepower. Selling for just $12.70, its best feature is the corrosion-resistant
02:43marine construction that matches genuine factory part numbers like 3H6-01030 for a seamless install.
02:50Holding a strong 4.9-star rating, it's an essential, budget-friendly preventative swap to keep your
02:56tender, skiff, or fishing motor running smooth all season long.
03:00That wraps up our list. All the direct links to grab these kits at the best current prices are waiting
03:06for you right down in the description box. If this video helped you dial in your cooling setup,
03:12please drop a like and subscribe to the channel for more straightforward gear reviews.
03:17Thanks for watching, and stay safe on the water.
