Overhaul Rebuild Kit for Yanmar 3TN78 Engine YB221 YB231 YB251 Excavator
SKU: 20076120952

Overhaul Rebuild Kit for Yanmar 3TN78 Engine YB221 YB231 YB251 Excavator

Sale price$254.70 Regular price$283.00
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Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 8 - Jul 13

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Description

Overhaul Rebuild Kit for Yanmar 3TN78 Engine YB221 YB231 YB251 ExcavatorApplication: For Models with Yanmar 3TN78 Engine Refer Yanmar YB221, YB231, YB251 Excavator, not only these models. Notice: Please send us the diameter of your old valve surface and the picture of your old cylinder head gasket when you buy, so that we can check the product information, thank you! The Cylinder Liner is a Semi finished type. Content: 1 Set of Overhaul Gasket Kit 3 Cylinder Liners 3 Pistons, STD 3 Piston Pins 6 Snap Rings 3 Rod Bushings

Application:

For Models with Yanmar 3TN78 Engine Refer Yanmar YB221, YB231, YB251 Excavator, not only these models.

Notice:

Please send us the diameter of your old valve surface and the picture of your old cylinder head gasket when you buy, so that we can check the product information, thank you! The Cylinder Liner is a Semi-finished type.

Content:

1 Set of Overhaul Gasket Kit
3 Cylinder Liners
3 Pistons, STD
3 Piston Pins
6 Snap Rings
3 Rod Bushings
Set Rings For 3 Pistons, STD
1 Set of Main Bearings
1 Set of Rod Bearings
1 Set of Thrust Bearings
3 Intake Valves
3 Exhaust Valves
6 Valve Guides
3 Intake Valves Seats
3 Exhaust Valves Seats

NOTICE:

Please send us your engine's nameplate and your model's nameplate after you order this product([email protected])

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 20076120952

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4.4 ★★★★★
Based on 1995 reviews
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A
Verified Purchase
ashlynnk
Bozeman, US
★★★★★ 4
Cute, comfortable waterproof boots (a little snug to put on)
Size: 7, Color: Velvet Tan/Gum 2
These are really cute Chelsea-style boots and feel very comfortable once they’re on. The waterproof material is great for wet weather and the sole feels sturdy with good traction. They look stylish enough to wear casually but still feel practical for rainy days. The only downside is they can be a little difficult to put on at first because the opening is somewhat snug, but once they’re on they fit well and feel supportive. Overall they’re a great waterproof boot and I’ve enjoyed wearing them.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 17, 2026
A
Verified Purchase
Abby B
Omaha, US
★★★★★ 5
Surprisingly great for my wide feet and high instep!
Size: 10.5, Color: Velvet Tan/Gum 2
So thrilled I took a chance on these. Finding boots is impossible for me. I have wide feet, a super high instep, a bunion on one foot, and I wear a hard to find size (10.5). I ordered the 10.5 and 11 in these expecting I might need to size up for width (if I could even get them on). It was a struggle getting the 10.5s on the first time, and once I did they were somewhat uncomfortable on the top of my left foot. But I read that they would relax so decided to give it a go because I need waterproof boots for an upcoming trip and the 11s felt too long. After two days of light wear, they are already breaking in and I have no more discomfort. Getting them on is already easier and they are plenty wide enough and very comfortable to walk in. These are true to size. Super happy and worth a day of mild discomfort to break them in!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 7, 2026
E
Verified Purchase
EE
Battle Creek, US
★★★★★ 5
Comfortable, sturdy, waterproof
Size: 9.5, Color: Black/Black
Loce, love, love these boots. Have walked ten miles with no foot pain around NYC. They go with everything and and are so comfortable. As they are waterproof/resistant, they get a little warm in high temps, but perfect three-season boots.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 17, 2026
K
Verified Purchase
Kate
Waukegan, US
★★★★★ 5
Super cute, comfortable, practical, love that they are slip on
Size: 10.5, Color: Tobacco/Black
I have worn these 2-3 times already. The first day was a school/work day so I was on my feet 9 hours and the only issue I had was with the side of the boot rubbing against my ankle. I just make sure I wear socks high enough to cover my ankles or jeans that go into the boots now for long wear days. Absolutely love them! They keep my feet dry in this snow( we live in Michigan). I had been looking for a pair like this for awhile now and was getting super frustrated that I couldn't find my size in any that I liked. I saw that they had these available in a 10.5 and I wear 11. I looked at the Sorel website reviews (since the amazon ones weren't super helpful on sizing) and they said that the boots ran big so I took a chance on the 10.5 fitting me. They fit perfect. I have long narrow feet but I could see where they would be tight or uncomfortable on someone with wider feet. I've been trying to find a pair for my mom now since she has boot envy.
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Reviewed in the United States on January 27, 2026
N
Verified Purchase
Nicholle King
Carnegie, US
★★★★★ 5
Worth it.
Size: 8.5, Color: Crushed Clay/Gum 2
Love all my Sorels. These were really cute, good color, comfortable, warm, fit well, good quality and sturdy. I would order again.
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Reviewed in the United States on March 26, 2026

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