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Description
Carburettor Gasket 18-7021 Kit for Mercury/Mariner WMK/WMD | 4BoatsCarburettor Gasket Kit part number 18 7021 for Mercury Mariner outboards replacement gaskets for multiple WMK WMD carburettor models. Suitable for the following engines Mercury Mariner: 4. 5hp (1980 1985) with carburettor model WMD 1 35hp (1984 1989) with WMK 38; 40hp (1970 1974) with WMK 1 & WMK 8 40hp (1975 1983) with WMK 21, WMK 24 & WMK 31; 50hp 4 cylinder with WMK 8 65hp (650) 3 cylinder (1972 1975) with WMK 5, WMK 12, WMK 13 & WMK 20 80hp 4
Carburettor Gasket Kit part number 18-7021 for Mercury/Mariner outboards - replacement gaskets for multiple WMK/WMD carburettor models.
- Suitable for the following engines - Mercury / Mariner: 4.5hp (1980-1985) with carburettor model WMD-1
- 35hp (1984-1989) with WMK-38; 40hp (1970-1974) with WMK-1 & WMK-8
- 40hp (1975-1983) with WMK-21, WMK-24 & WMK-31; 50hp 4-cylinder with WMK-8
- 65hp (650) 3-cylinder (1972-1975) with WMK-5, WMK-12, WMK-13 & WMK-20
- 80hp 4-cylinder (1969-1972) with WMK-2; 85hp (1973-1975) with WMK-4, WMK-16 & WMK-17
- 90hp 6-cylinder (1978-1986) with WMK-23, WMK-27, WMK-30, WMK-35 & WMK-39
- 115hp 6-cylinder (1970-1988) and 135-150hp units (1970-1978) covering WMK-3, WMK-4, WMK-7, WMK-9, WMK-10, WMK-11, WMK-14, WMK-15, WMK-16, WMK-17, WMK-18, WMK-19, WMK-20, WMK-22, WMK-25, WMK-26, WMK-28, WMK-29, WMK-30, WMK-32, WMK-35, WMK-36, WMK-39, WMK-40, WMK-41 (and variants)
Part number: 18-7021. Brand: Carburettor Gasket. Check carburettor model list to confirm fit before purchase; suitable for servicing and repair of compatible Mercury/Mariner carburettors.
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4.0 ★★★★★
Based on 1276 reviews
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Product Reviews
★★★★★ 3
I wanted a blue ball
It's great. It just wasn't blue.
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Reviewed in the United States on January 5, 2026
★★★★★ 5
its a great ball
works well
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Reviewed in the United States on July 8, 2025
★★★★★ 5
One of the best dog toys I’ve found
Color: Blue, Color: Blue
My Great Dane puppy- at 140lbs, loves this!! We had another one that was plastic and it worked ok but this is so much better! Interactive, soft to play with, battery last a long time & he does not get bored with it.
Besides is plush lamb chops, best toy ever bought for him.
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Reviewed in the United States on May 25, 2026
★★★★★ 5
Keeps my wild child busy!
Color: Orange
*UPDATE 1/10/26* Does my pup love it? Yes. 5 stars for that. His big thing is just holding it in his mouth though, and laying down with it. Then he will put it down, and as soon as it rolls away he gets up and grabs it again. He definitely requires attention from his humans when it’s turned on…kind of defeats the purpose of why I bought it! He’s a needy boy, that’s for sure, so it’s not the toy’s fault.
Two improvements I’d love to see though, are 1) the ability to turn off that yappy bark. I think my dog is more excited about it moving and not so much the yapping. Not that it’s bad, but my boy doesn’t bark much so I’m used to a quieter household. And 2) when removing the base for powering off, there should be a sensor so it doesn’t keep spinning in the socket, occasionally slipping out and hitting the floor. I worry about it breaking due to this.
This thing arrived today and we couldn’t wait till Christmas to give it to our high play drive Australian Shepherd. It’s been barely above zero for weeks with no end in sight, and I have cold weather asthma so I really try to limit my exposure to the elements. Needless to say, my dog has been B O R E D. He truly craves interactive play with his humans, but last week I bought a cheap r/c cat toy that really caught his attention. So I splurged on this toy and so far, it’s AWESOME. He can’t control himself when the rope starts spinning. He pounces on it and it goes spinning off and around. He keeps picking it up thinking it’ll stop, but it keeps going. After 5 minutes of play he was acting completely gassed, but he just can’t resist it, as he put it down to get a drink of water and it started spinning again. Forget the water, I need that toy! As long as this thing can handle the teeth, slobber, dirt and grime, I’ll be a repeat customer!
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Reviewed in the United States on December 22, 2025
★★★★★ 4
My dog loves it...but needs charging four, five times a day. You really need 2 for full-time play
Color: Blue
My dog loves this toy.
The first time she saw it and it started rolling, bounding, and waving the ropes around...she was barking at it, chasing it, grabbing it, jumping all over the place.
There is no other toy she has that she will leave this for.
And...that's part of the problem.
I have to take this away from her three, four, five times a day to recharge it. The charge barely lasts an hour and the toy is dead. And it takes over an hour to charge it all the way up. Which means she plays with it less than it spends charging. That's not ideal.
The product page and manual that comes with the toy says there is a 10-minute play period followed by a 30-minute interval to let the dog cool down...not get overly stimulated.
I have never seen a cool-down period. I don't know if it's because the dog plays with it, shakes it around, tosses it and chases it, etc., etc., etc. constantly...but it just keep going until the battery is dead.
I wish it did have a cool-down period. She likes playing with the ropes and rolling it around herself even after the battery dies, so if there was a cool-down, maybe it wouldn't need to be charged many times a day.
Once it's charged and she sees me putting it back together, she gets very excited and starts jumping up and trying to grab it.
Our corgi reduces most rope toys to threads in a day or less, and this one has held up surprisingly well against her super-chewing habits. The material the ball part is made of is very durable (we have a couple other toys with the same type of shell) and she's chewed on them all a lot without any damage.
The toy keeps her entertained and happy...when it's not on the charger.
I wish it was a good-enough value for the money to be able to justify buying two of them so I could have one charging while she was playing with the other.
=================
I'm adding 1 star, because the company customer service is outstanding. They emailed me about my concerns vis-a-vis the short battery life, and it seemed that they really listened and cared about my input.
I don't know what, if anything, can be done to extend the battery life given that it's spinning some substantial pieces of rope around, but I think they'll do as much as they can.
In the meantime, my dog's love for this toy has not diminished in the least. She still gets very excited when she sees me starting to put it together after it's done charging, and she ignores everything else (sometimes even offers of treats) to play with it.
I have a second one now, and I can almost keep them going full-time, but the few minutes every couple hours when both of them are on the charger is probably good for her anyway...she'd probably be over-stimulated if she had one of these to chase non-stop.
Summary: Great toy, lots of fun, my dog loves it. However, you really need two the way things are right now unless you are okay with your dog being able to play less than half the time.
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Reviewed in the United States on March 13, 2026