71400282 Hydraulic Cylinder Seal Kit for Fiat-Hitachi FH300-1 / FH300-2 Excavators
71400282 is an aftermarket hydraulic seal kit for the Fiat-Hitachi FH300-1 / FH300-2 excavators. Independent catalogs identify it as a 165 mm bore kit (HerculesUS: FH-71400282, bore 165 mm, application arm; some eBay listings describe the same number as a 165 mm piston boom cylinder kit). Because the application differs between listings, confirm the cylinder position on your machine and measure the piston/bore before ordering.
No pressure, temperature or service-life ratings are claimed for this listing — such values require verified material and design data. Request the material data sheet and confirmed component list from our sales team at [email protected] with your order.
Verified Specs
| Parameter | Value / Verification |
| Part Number | 71400282 — HerculesUS, eBay, Amazon |
| Brand / Machine | Fiat-Hitachi FH300-1 / FH300-2 — HerculesUS, eBay, Amazon |
| Bore Size | 165 mm — HerculesUS |
| Application | Arm per HerculesUS; boom per some eBay listings — confirm — HerculesUS / eBay |
| Rod Size | Not stated by sources — confirm |
| Condition | New, aftermarket replacement — Multiple suppliers |
Confirmed / Reference Fitment
•Confirmed: Fiat-Hitachi FH300-1 / FH300-2 (HerculesUS, eBay, Amazon).
•Reference: cylinder position (arm or boom) — confirm with your machine.
Fitment Checklist
1.Machine model: Fiat-Hitachi FH300-1 or FH300-2 (not “Hitachi” — confirm the Fiat-Hitachi joint-series badge).
2.Cylinder position: identify whether your leaking cylinder is the arm or boom cylinder.
3.Measure the bore: ≈ 165 mm per catalog; confirm with calipers.
4.Note the machine S/N and send it with your order.
When to Inspect / Replace
•Oil film or drips on the arm or boom cylinder rod.
•Cylinder drift or slow, jerky movement under load.
•Scored rod, milky oil, or visible contamination.
Identify the leaking cylinder before ordering — this number covers more than one position depending on the source.
Wholesale & MOQ
Factory-direct supply for distributors, repair shops and fleet operators. Wholesale MOQ: 5 kits. Email [email protected] with your quantity, shipping port and destination for a same-day quote. Custom packaging and private labeling available.
FAQ
Is this for “Hitachi” or “Fiat-Hitachi” FH300? — Fiat-Hitachi FH300-1 / FH300-2 (the Fiat-Hitachi joint-production series). The page title previously said “Hitachi FH300” — the correct brand is Fiat-Hitachi.
Arm or boom cylinder? — Sources differ: HerculesUS lists it as arm, some eBay listings as boom (165 mm piston). Measure your cylinder and confirm with our team before ordering.
What is the bore size? — 165 mm per HerculesUS. Measure your cylinder to confirm.
Fiat-Hitachi FH300 seal kit
71400282
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