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Description
4236057 Boom Arm Cylinder Seal Kit Fits Hitachi EX400Hitachi Aftermarket Style 4236057 Hydraulic Cylinder Seal Kit This is a New Seal Kit that fits the following Models and Cylinder part numbers Model Num. Application Cyl Part# Code Rod Size (in) Bore (in) Size Misc Serial Number Part # EX400, EX400LC, EX400H, EX400LCH BOOM LH 4206479 P UB 10 115 mm 170 mm 115 X 170 02001 HIT 4236057 EX400, EX400LC, EX400H, EX400LCH BOOM RH 4206478 P UB 10 115 mm 170 mm 02001 HIT 4236057 EX400, EX400LC, EX400H, EX400LCH
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- Free Standard Shipping on $100+ Orders to the USA.
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
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Best in 7 days
4.1 ★★★★★
Based on 1034 reviews
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Product Reviews
★★★★★ 5
How was the item? K&N Select Oil Filter: Designed to Protect
Easy to use
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 18, 2026
★★★★★ 5
.
GREAT
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 19, 2026
★★★★★ 5
Well worth it
Worked out perfectly, smooth install, supplied all gaskets and most important the low price.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 18, 2025
★★★★★ 4
Easy to Install - Good Value for the Money
This is my first experience with K&N engine oil filters. I purchased one through AMZN and it was cheaper than expected. I may have purchased it on sale, because it was only $10. K&N is known to have great products, so I will update this review after I've used this filter for a while. So far, it seems to be working fine.
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Reviewed in the United States on June 25, 2024
★★★★★ 5
Great plug
Style: Single
My car goes through these every 30,000 miles or so. But fantastic plug all around. Performs flawlessly even at almost 9000 rpm.
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Reviewed in the United States on September 11, 2015
