SKU: 74659518545

For Hitachi Excavator ZX270 ZX270LC ZX280LC ZX280LCN Arm Cylinder Seal Kit 4639938 9180579

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Description

For Hitachi Excavator ZX270 ZX270LC ZX280LC ZX280LCN Arm Cylinder Seal Kit 4639938 9180579Part Number: 4639938,9180579 Application: For Cyl Part# Code Rod Size (in) Bore (in) Size Misc Serial Number Part # ZX270, ZX270LC, ZX280LC, ZX280LCN ARM 4628581 P UB 10 100 mm 145 mm Mono Boom D04 08 , D05 01 HIT 4639938 EX270 5, EX270LC 5, EX280H 5, EX280LCH 5 ARM 9147237 P UB 14 100 mm 145 mm 100 X 145 10001 HIT 9180579 ZX270, ZX270LC, ZX280LC, ZX280LCN ARM 9186598 P UB 14 100 mm 145 mm Mono Boom 020001 D04 07, 020001 D04 12 HIT 9180579 ZX270,

Part Number:

4639938,9180579

Application:

For
Cyl Part#
Code
Rod Size (in)
Bore (in)
Size/Misc
Serial Number
Part #


ZX270, ZX270LC, ZX280LC, ZX280LCN
ARM
4628581
P-UB-10
100 mm
145 mm
Mono Boom
D04/08-, D05/01-
HIT-4639938


EX270-5, EX270LC-5, EX280H-5, EX280LCH-5
ARM
9147237
P-UB-14
100 mm
145 mm
100 X 145
10001-
HIT-9180579


ZX270, ZX270LC, ZX280LC, ZX280LCN
ARM
9186598
P-UB-14
100 mm
145 mm
Mono Boom
020001-D04/07, 020001-D04/12
HIT-9180579


ZX270, ZX270LC, ZX280LC, ZX280LCN
ARM
9232345
P-UB-14
100 mm
145 mm
2P-Boom
020001-D04/07, 020001-D04/12
HIT-9180579


Detail:



Model Num.

Shipping Notes
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Exchange/Return Notes
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SKU: 74659518545

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4.8 ★★★★★
Based on 24 reviews
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Product Reviews
J
Verified Purchase
jinju jiang
Draper, US
★★★★★ 5
This chair is amazing
Color: Sky Blue, Size: Pack of 1, Color: Sky Blue, Size: Pack of 1
⭐⭐⭐⭐⭐ Absolutely love this chair! It was super easy to assemble—I had it set up in no time with clear instructions and minimal effort. The comfort level is fantastic; the seat cushion is just right and the back support makes it great for longer sitting sessions. The color is beautiful in person—clean, modern, and adds a fresh pop to the room without being overwhelming. I also really like the smooth wheels and sturdy build; it feels stable and well-made. Overall, this is a great combination of style, comfort, and value. Highly recommend!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 4, 2026
C
Verified Purchase
Chockalingam Ravi Sundaram
Lake Worth, US
★★★★★ 5
Excellent Ergonomic Chair
Color: Black, Size: Pack of 1
I am incredibly impressed with this chair. The setup was a breeze and took me less than 20 minutes from start to finish. It is exceptionally comfortable, offering fantastic ergonomic support that keeps my back pain-free during long hours of sitting. The materials feel premium and highly durable. Plus, the included 5-year warranty is incredibly helpful and provides great peace of mind. I highly recommend it to anyone looking for a reliable workspace upgrade!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 25, 2026
M
Verified Purchase
Maria Velasco
Pawtucket, US
★★★★★ 5
Comfortable, Sturdy, and Great for Long Hours
Color: Black, Size: Pack of 1
I am very happy with this office chair. It was easy to assemble, feels sturdy, and is very comfortable to sit in for long periods of time. The ergonomic design provides good back support, and the adjustable features make it easy to find the perfect position. The mesh back keeps me cool throughout the day, and the chair rolls smoothly. Overall, it offers great quality for the price and has made working at my desk much more comfortable. I would definitely recommend it to anyone looking for a reliable office chair. ⭐⭐⭐⭐⭐
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 30, 2026
C
Verified Purchase
Camryn
Port Orchard, US
★★★★★ 5
Great Chair! Worth the Price!
Color: Sky Blue, Size: Pack of 1
LOVE my new desk chair! I got the Sky Blue which is a really pretty blue in person. I work from home in tech, and had been getting constant headaches no matter what position I was in. I finally decided to invest in a better desk chair, and I'm SO glad I did! It's much more supportive and comfortable. I really like that I can flip the arms up or down, and the height is easy to adjust. Also, because I can flip the arms up, I can keep the chair out of the way when I'm not working by putting it right up against the desk. Very much worth the price! Assembly was simply and quick. Not even 30 minutes. Also, when I had a question about the chair, their support team was quick to respond and very helpful. Highly recommend!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 2, 2026
D
Verified Purchase
David Miller
Lowell, US
★★★★★ 5
Great quality chair, regardless of price.
Color: Black+white, Size: Pack of 1, Color: Black+white, Size: Pack of 1
Great quality chair, regardless of the price, period. So well packaged that it took almost as long to unwrap as assemble. Assembly was easy (loved the Allen wrench with sturdy handle). I am 6'2" and the fit and height adjustments work well for my height. Comfort is personal, so I like the semi-firmness of the seat. While the chair is constructed of heavy gauge plastic the base is solid metal with enamel finish: I love the look. The arm rests line up perfectly to my computer keyboard. I expect many, many years of service.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 17, 2026

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