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Description
Main Bearing Set 6610-21-8070 for Komatsu Engine N-855-1Replacement part number: 6610 21 8070, 6610218070 Fit for Engine: Komatsu N 855 1, NTO 6 B 1A, NTO 6 CI 1D, NTO 6 CI 1C, NTO 6 G 1G, NTO 6 CI 1G, NTO 6 CI 1B, NTO 6 CI 1N, NTO 6 CI 1H, NTC 743 1B, NTC 743 1C, NTC 743 1E, NTC 743 1D, NT 855 1J, NT 855 1E, NT 855 1B, NT 855 1D, NT 855 1F, NT 855 1A, NH 220 CI 1K, NH 220 CI 2V, NH 220 CI 2W, NH 220 CI 2R, NH 220 CI 2D, NH 220 CI 2AA, NH 220 CI 2E, NH 220 CI 2G, NH 220 CI 2Q, NH 220 CI 2F, NH 220 CI 2H,
Replacement part number:
6610-21-8070, 6610218070Fit for Engine: Komatsu N-855-1, NTO-6-B-1A, NTO-6-CI-1D, NTO-6-CI-1C, NTO-6-G-1G, NTO-6-CI-1G, NTO-6-CI-1B, NTO-6-CI-1N, NTO-6-CI-1H, NTC-743-1B, NTC-743-1C, NTC-743-1E, NTC-743-1D, NT-855-1J, NT-855-1E, NT-855-1B, NT-855-1D, NT-855-1F, NT-855-1A, NH-220-CI-1K, NH-220-CI-2V, NH-220-CI-2W, NH-220-CI-2R, NH-220-CI-2D, NH-220-CI-2AA, NH-220-CI-2E, NH-220-CI-2G, NH-220-CI-2Q, NH-220-CI-2F, NH-220-CI-2H, NH-220-CI-2JJ, NH-220-CI-2K, NH-220-CI-2KK, NH-220-CI-2LL, NH-220-CI-1G, NH-220-CI-1Q, NH-220-CI-2B, NH-220-CI-1H, NH-220-CI-2N, NH-220-CI-1N, NH-220-CI-2T, NH-220-CI-1F, NH-220-CI-2U, NH-220-CI-1E, NH-220-CI-1D, NH-220-CI-1B, NH-220-CI-2L, NH-220-CI-1L, NTO-6-CI-1M
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4.4 ★★★★★
Based on 6 reviews
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Product Reviews
★★★★★ 4
Dog ball
Color: A) Small 2.5" Ball
My dog enjoys but smaller than expected
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Reviewed in the United States on May 20, 2026
★★★★★ 5
Great tough ball
Color: A) Small 2.5" Ball
Great ball for dogs who like to destroy most any ball. Our girl loves this. Yay!!!
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Reviewed in the United States on March 17, 2026
★★★★★ 3
Not Quite So Durable...
Color: B) Medium 3" Ball, Color: B) Medium 3" Ball
Maybe I have a SUPER aggressive chewer...he went through this ball in under a week. I originally bought the ball because of a review that stated the owner's Pitbull had the same ball for two years; not so much for my Rottweiler. He started chewing off and swallowing small crumbs from the ball within a day or two. By the end of the week, it was chunks so I had to toss it in the trash to prevent an intestinal obstruction. On the up side, my Rottweiler LOVED the ball while it lasted. However, I can't, in good conscience, give this ball a rave review based on this experience. Please take this review with a grain of salt as I have yet to find ANY toy that my boy won't DESTROY in a week or two. I hope that someone finds this informative when searching for chew toys for SUPER aggressive chewers like mine.
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Reviewed in the United States on March 16, 2026
★★★★★ 5
loud but in a good way
Size: 4.5"
Love these crazy loud squeeky balls. I bought two a bit too big but the dogs still love them. Yes, they will drive you insane but the dogs love them so much it's worth it watching the pups enjoy the balls. They are strong and safe as long as they aren't too small for your dogs mouth.
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Reviewed in the United States on May 2, 2026
★★★★★ 5
Great for aggressive chewers - Great for clean teeth
I never thought these would stand up to my 60lb pittie puppy's chewing. But they are far and away her favorite toy and are holding up beautifully. One squeaker insert bit the dust -- which is not bad since it gives us one silent one. But otherwise they are holding up superbly to her powerful jaws. We have tried a lot of toys. So far, all the "for aggressive chewers" toys have been torn apart within days if we are lucky -- usually it's minutes. But these balls show little-to-no sign of wear. The squeakers are very loud which she loves can get a bit tiresome. So, as I mentioned, having one silent one is a great option. And she really likes the texture. She loves them so much, we bought a second set and will probably buy a third to have in reserve. (We are realistic and don't expect them to last forever.) All I have to say is "where's spiky ball" and she instantly stops what she is doing and goes on the hunt. A great buy!! (NOTE: It's been almost three months and one is just beginning to show some damage. Given that she plays with them non-stop, they've showed amazing durability. And everyone comments on how clean and beautiful her teeth are. I don't brush them or give her dental treats. So it has to be these balls!!)
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Reviewed in the United States on June 23, 2025