4364915 Boom Cylinder Seal Kit for Hitachi EX200-5 EX200LC-5 EX210H-5 EX210LCH-5 Excavators
Product Overview
The 4364915 boom cylinder seal kit is a factory-manufactured aftermarket replacement kit cross-referenced against the Hitachi part number 4364915 (listed as “KIT;SEAL” for Hitachi by avspare.com). The Hercules Sealing Products catalog identifies it as the boom cylinder (LH and RH) hydraulic seal kit with an 85 mm rod x 120 mm bore, used on the Hitachi EX200-5, EX200LC-5, EX210H-5 and EX210LCH-5 excavators from serial 050001 onward.
DJF Seals manufactures and supplies the 4364915 kit at factory-direct wholesale pricing for Hitachi equipment dealers, independent repair shops and fleet maintenance programs.
Verified Application
The following application data was cross-checked against the Hercules Sealing Products catalog, parts resellers and marketplace listings:
| Part Number | 4364915 (aftermarket variants written 4364915-EX / HIT-4364915-EX) |
| OEM Reference | Hitachi KIT;SEAL 4364915 (avspare.com lists it as a Hitachi genuine reference); Hercules HIT-4364915, catalog code M-SK-P-UB-10-85X120 |
| Cylinder Position | Boom cylinder LH and RH (per Hercules) |
| Verified Fitments | Hitachi EX200-5, EX200LC-5, EX210H-5, EX210LCH-5 (serial 050001 and after per Hercules); EX225USR per one eBay listing |
| Rod / Bore (per Hercules) | 85 mm / 120 mm |
| Boom Cylinder Groups (per Hercules) | 4317394 / 4372913 (boom LH); 4317393 / 4372912 (boom RH) |
| Condition | New, aftermarket replacement |
Note: specific material grades, pressure rating, temperature range, exact piece counts, certifications and service life are factory data and are not independently verified. Confirm these details with the factory before ordering.
Replacement Scope
This kit covers the sealing elements required to reseal the boom cylinder in the 85 mm rod x 120 mm bore configuration, applied to the LH and RH boom cylinders of the verified Hitachi models. Hercules maps the kit to boom cylinder groups 4317394 and 4372913 (LH) and 4317393 and 4372912 (RH). Exact kit contents and piece counts should be confirmed with the factory against your cylinder before ordering.
Fitment Verification
The part number, cylinder position and fitments were verified through multiple independent sources:
- Hercules Sealing Products (HIT-4364915, code P-UB-10): rod 85.000 x bore 120.000; fitment table maps EX200-5, EX200LC-5, EX210H-5, EX210LCH-5 (serial 050001 and after) to Boom LH (cylinders 4317394, 4372913) and Boom RH (cylinders 4317393, 4372912).
- WQC Parts (HIT-4364915-EX): Hercules catalog code M-SK-P-UB-10-85X120, catalog data source “2026 US Mobile Kit Catalog”.
- Amazon (RAParts): “4364915 Boom Cylinder Seal Kit Fits Hitachi EX200LC-5, EX210H-5, EX210LCH” — LH/RH boom cylinder kit.
- eBay (multiple listings): “4364915 Boom Cylinder Seal Kit For Hitachi EX200-5 210H-5 EX225USR Excavator” — one listing adds EX225USR.
- topsealkit.com: “4364915 Hydraulic Cylinder Seal Kit For Hitachi EX200-5”.
- avspare.com: Hitachi part 4364915, “KIT;SEAL”.
- Conflict note: the current page and URL claim ZX200-5, ZX210-5 and ZX225-5 (plus “EX225-5”); no independent source confirms the ZX models or an “EX225-5”, and the one eBay listing that covers the larger model writes it as EX225USR. The ZX fitments are therefore not claimed on this page.
- Conflict note: the current page writes “EX210-5”; the Hercules catalog and Amazon listings write “EX210H-5”. Verify your exact machine model and serial number before ordering.
- Conflict note: the current page claims rod 85 mm / bore 120 mm and boom LH/RH position — these match the Hercules catalog and are confirmed.
- Materials, pressure, temperature, piece counts, certifications and service life are not independently verified.
Factory Inspection & Packing
Each 4364915 kit is assembled and checked at the DJF factory before packing. Sealing elements are placed in labeled poly bags marked with the part number, then packed into export cartons for protection during international shipping. Kits can be packed under DJF branding, neutral packaging, or your own private label for distribution.
Wholesale Ordering
DJF Seals supplies the 4364915 kit at factory-direct wholesale pricing for distributors, dealers and repair shops. To request a quotation, send your part number and quantity to [email protected] or [email protected]. OEM/ODM service, custom packaging and bulk container shipping are available for regular programs.
MOQ
MOQ: 5 kits.
FAQ
Q: Which machines does the 4364915 seal kit fit?
A: Verified fitments are the Hitachi EX200-5, EX200LC-5, EX210H-5 and EX210LCH-5 excavators (serial 050001 and after per the Hercules catalog), with EX225USR added by one eBay listing. Confirm your machine model and serial number before ordering.
Q: Which cylinder does this kit service?
A: The boom cylinder, LH and RH positions, per the Hercules Sealing Products catalog. Hercules maps it to boom cylinder groups 4317394/4372913 (LH) and 4317393/4372912 (RH).
Q: What are the cylinder dimensions for this kit?
A: The Hercules catalog lists HIT-4364915 as 85 mm rod x 120 mm bore.
Q: Does this kit fit Hitachi ZX200-5, ZX210-5 or ZX225-5 models?
A: Those models appear on the current page but could not be confirmed in any independent source, so we do not claim them. Please confirm your machine model and cylinder part number with us before ordering.
Q: What is the minimum order quantity?
A: MOQ: 5 kits.
