Product Overview

The RD809-71280 boom cylinder seal kit is a factory-manufactured aftermarket replacement kit cross-referenced against the genuine Kubota part number RD809-71280, described in OEM parts systems as “KIT SEAL, BOOM”. It is designed for the boom cylinders of Kubota KX080-3 series excavators and is intended to restore leak-free sealing performance and reliable hydraulic operation during a boom cylinder overhaul.

DJF Seals produces this kit in-house and supplies it at factory-direct wholesale pricing, making it a dependable stock item for heavy equipment parts suppliers, repair shops and fleet maintenance teams servicing Kubota KX080-3 series machines.

Verified Application

The following application data was cross-checked against public OEM references, dealer parts stores and marketplace listings:

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 for a boom cylinder rebuild, including the rod seal, piston seal, wiper (dust seal), O-rings and supporting backup or guide elements for the RD809-71280 cylinder configuration. 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:

• Messicks (Kubota dealer): genuine Kubota RD809-71280 “KIT SEAL, BOOM”.
• Kubota US OEM parts shop (shop.kubotausa.com): RD809-71280 KIT SEAL BOOM, genuine Kubota Tractor OEM part.
• Hoober (Kubota dealer): KUB-RD809-71280 “KIT SEAL, BOOM”.
• eBay aftermarket listings: “RD809-71280 Boom Cylinder Seal Kit fits Kubota KX080-3T KX080-4” and “RD809-72090 RD809-71280 Cylinder Seal Kit For Kubota KX080-3”.
• Ruijueparts: RD809-71280 boom cylinder seal kit for Kubota KX080 excavators.
• Fitment note: the current page additionally lists KX080-4S and KX080-4S2; these two model codes could not be independently verified in public sources and are therefore not claimed on this page. Confirm your machine model before ordering.
• Materials, pressure, temperature, piece counts, certifications and service life are not independently verified.

Factory Inspection & Packing

Each RD809-71280 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 RD809-71280 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 RD809-71280 seal kit fit?
A: Verified fitments are the Kubota KX080-3, KX080-3T and KX080-4 excavators, for the boom cylinder. Confirm with your machine serial number and parts book before ordering.

Q: Is RD809-71280 a genuine Kubota part number?
A: Yes. The OEM number RD809-71280 is listed as “KIT SEAL, BOOM” in Kubota OEM dealer parts systems. This page sells a factory-made aftermarket replacement cross-referenced to that number.

Q: Does this kit fit the KX080-4S or KX080-4S2?
A: These two codes appear on the current listing but could not be independently verified in public sources. Please confirm your machine model and cylinder before ordering.

Q: What is the minimum order quantity?
A: MOQ: 5 kits.