00:00If you've ever been out on the water and watched your temperature warning light flick on, you already know that
00:05sinking feeling in your stomach.
00:07Nine times out of ten, the culprit is a tired little rubber impeller buried in your lower unit.
00:12So I went digging and pulled together the top five water pump impellers for outboard motors right now, best prices,
00:18best reviews, and the ones people are actually buying by the thousands.
00:23Let's get into it.
00:25First up is the 345-65021-0 impeller for Tohatsu and Mercury 25, 30, and 40 horsepower motors.
00:34This one's a six-blade rubber impeller, about 4.4 centimeters across, and it's a direct cross-reference to the
00:40Sierra 18-8923.
00:43What I like here is the blade flexibility, the rubber has that nice springy snap to it, so it seats
00:48properly against the housing and pumps hard right from the first pull.
00:52And the price?
00:54Three dollars and fifty-two cents.
00:57That's it.
00:59Nearly 4700 sold with a 4.8 rating, so plenty of people have already put this thing through a season
01:04and come back happy.
01:06Honestly, at that price you should keep a spare in your tackle box.
01:10Next is the 47-42038-2 for Mercury and Mariner outboards, covering 6, 8, 9.9, and 15 horse motors.
01:20This is the one with a perfect 5-star rating, over 4,600 sold and nobody's complaining, which almost never
01:26happens.
01:27It cross-references to 47-42038, the Q02 version, and the Sierra 18-3062, so you don't have to guess
01:36whether it fits your year.
01:40If you run a small Merck kicker or a tiller motor, this is a no-brainer replacement.
01:45Do it every two years and you'll basically never have a water pump problem again.
01:50Number three is a bit different, it's the full 6 AHW0078 water pump kit for Yamaha 4-stroke 15 and
01:5720 horse motors, including the F-15C and F-20.
02:01And I want to be clear about why this one costs more at 2169.
02:06You're not just getting the impeller, you're getting the wear plate, the gaskets, the seals, the whole rebuild kit.
02:12That's the right way to do a water pump job, because slapping a new impeller against a grooved old housing
02:18is just asking to do it all over again next spring.
02:21Genuine part numbers, 4.9 stars, and it saves you a second trip to the shop.
02:26Coming in at number four, and this is the budget champion of the whole list, the 63V44352 impeller for Yamaha
02:339.9, 15, and 20-horsepower motors, both 2-stroke and 4-stroke.
02:39$2.92
02:41I mean, that's less than a coffee.
02:44It covers all the 63V-01 and-01-00 variants, so fitment is straightforward.
02:51$4,500 sold, 4.8 stars.
02:54If you've got an older Yamaha kicker sitting on the transom that only gets used a handful of weekends a
02:59year,
03:00buy two or three of these and just make it a routine spring maintenance thing.
03:04And rounding out the list at number five is the 334-65,021 for Nissan and Tohatsu 15, 18, and
03:1120-horsepower motors, matching Sierra 18-8,921.
03:16$3.06, 4.9 stars, over 4,000 sold.
03:21These older Tohatsu and Nissan blocks are absolute workhorses, they'll run forever as long as you keep water moving through
03:27them.
03:28The rubber compound on this one holds its shape well in storage, which matters if your boat sits all winter,
03:34because that's usually when impeller blades take a set and lose their pumping efficiency.
03:39All the links are down in the description, so grab the one that matches your motor before the season sneaks
03:44up on you.
03:45If this saved you a headache or a repair bill, do me a favor and hit that like button and
03:50subscribe for more boat maintenance stuff.
03:52Thanks for watching, and I'll see you on the water.
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