SKU: 25280059102

Caterpillar 8T4939 Replacement Hydraulic Cylinder Seal Kit

$173.25 $192.50
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Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 19 - Jul 24

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Description

Caterpillar 8T4939 Replacement Hydraulic Cylinder Seal KitCaterpillar 8T4939 Replacement Hydraulic Cylinder Seal Kit *Photo Is For Representative Purposes Only And Are Not The Exact Seals* *This Is A Special Order Seal Kit And May Take Up To 7 Days To Ship, Please Plan Accordingly* *Please Verify Kit Before Ordering* *Please Verify All Measurements And Model Numbers (The WHOLE Model Number). It Is Up To You To Decide For Sure If This Item Fits Your Machine. If You Need Help, Please Call Or Email Us.* Use

Caterpillar 8T4939 Replacement Hydraulic Cylinder Seal Kit

*Photo Is For Representative Purposes Only And Are Not The Exact Seals*

*This Is A Special Order Seal Kit And May Take Up To 7 Days To Ship, Please Plan Accordingly*

*Please Verify Kit Before Ordering*

*Please Verify All Measurements And Model Numbers (The WHOLE Model Number). It Is Up To You To Decide For Sure If This Item Fits Your Machine. If You Need Help, Please Call Or Email Us.*

Use With OEM Cylinder Number: 4T5931

Insert Wiper
Rod Seal: Special -3
Piston Seal: Piston Seal

Rod: 7.25", 10.50"
Bore: 9.25", 11.50"

Fits Caterpillar® Dump Truck Applications:

783B Dump Truck (Hoist - S/N: 8GB, 6HK, 8YM, 1HW, 5AZ, APX, Unspecified Application)

784B Dump Truck (Hoist - S/N: 8GB, 6HK, 8YM, 1HW, 5AZ, APX, Unspecified Application)

784C Dump Truck (Hoist - S/N: 8GB, 6HK, 8YM, 1HW, 5AZ, APX, Unspecified Application)

785 Dump Truck (Hoist - S/N: 8GB, 6HK, 8YM, 1HW, 5AZ, APX, Unspecified Application)

785B Dump Truck (Hoist - S/N: 8GB, 6HK, 8YM, 1HW, 5AZ, APX, Unspecified Application)

785C Dump Truck (Hoist - S/N: 8GB, 6HK, 8YM, 1HW, 5AZ, APX, Unspecified Application)

This Item Is A Brand New Aftermarket Hydraulic Cylinder Seal Kit. Matches OEM Kit, All Parts And Seals Are Included.

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: 25280059102

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4.8 ★★★★★
Based on 7 reviews
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Product Reviews
C
Verified Purchase
Courtney A.
Fort Morgan, US
★★★★★ 5
Decent quality for the price
Color: Grey
Decent quality for the price. Other privacy screens were extremely out of my budget, but this looks and works just fine- I just needed something simple to place behind my couch to hide some clutter. It took me about a half hour to assemble, but it was easy enough. It might be due to my carpeting, but I don't trust that the screen would be stable enough to stand freely without falling. Thankfully my plan all along was to wedge the screen between the couch and a box of clutter anyway, so for me it works as l'd planned!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 10, 2026
M
Verified Purchase
Madi R.
Bozeman, US
★★★★★ 4
Overpriced but effective.
Color: Cream
I happened to get lucky and get a warehouse deal at an additional 30% discount. Even at $25, it feels a little overpriced. But it was easy to assemble and serves its purpose. If you line the Velcro up exactly, the panels sag, if you stretch past even, but where it still grips, they look pretty ok. It is very light and does fold very compact for easy storage.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 3, 2026
S
Verified Purchase
Sunny in AZ
Houston, US
★★★★★ 5
Great price for a great product
Color: Coal Black
Excellent quality and great price to boot. Easy to assemble and folds up easily to be stored. We are using it as a privacy screen when we have company that needs to sleep on the couch and also to block off a hallway leading to a guest suite. It looks great and is as described in the ad
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 16, 2025
C
Verified Purchase
Carissa L
Belleville, US
★★★★★ 1
No.
Color: Coal Black, Color: Coal Black
This was horribly made and a nightmare to put together. You have to basically bend the bars to get the coverings attached. The sizes don't match. The stickers that label the parts are impossible to remove and if you do get them off theres a lot of residue left behind. On top of that once it was put together I noticed theres a big dirty foot print on it which is definitely not mine.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 5, 2026
D
Verified Purchase
Duckie mom
Birmingham, US
★★★★★ 3
You have to add weight to it
Color: Coal Black
It does its job and it was easy to put together but it's a little on the flimsy side and it will easily be knocked down. So you're going to have to figure out a way to make the legs heavier? I used cinder blocks, single cinder blocks and it works just fine. Just know that it will knock over super easy
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 22, 2026

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