John Deere O-Ring – part no. MIU804788 is a precision-moulded sealing ring designed to provide reliable fluid and air sealing in hydraulic, fuel, engine or hydraulic oil systems on compatible John Deere equipment. Manufactured to meet John Deere OEM specifications, this O-ring offers excellent resistance to oil, fuel, hydraulic fluid and engine service environments, helping prevent leaks, retain system pressure, and support long-term component durability.

Ideal for scheduled maintenance, repair work, or as part of a gasket and seal kit, this O-ring helps ensure tight, dependable sealing where hose ends, fittings, pumps, and housings meet — reducing downtime and protecting expensive machinery.

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Key Features

• Genuine John Deere OEM Part – Designed and tested to match original equipment specifications

• Durable Elastomer Material – Provides reliable resistance against oils, fuels, hydraulic fluids, and heat

• Precision Fit – Ensures leak-free sealing in mating surfaces and junctions

• Wide Service Compatibility – Suitable for engines, hydraulics, and fluid-body connections

• Essential Maintenance Component – Ideal for routine rebuilds and overhauls

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Typical Applications — Fits These Machines

The MIU804788 O-Ring is used widely across John Deere equipment where a sealing O-ring of its size and specification is required. Typical machine types include:

John Deere Tractors & Utility Vehicles:

• Compact utility tractors such as 1xxx, 2xxx, 3xxx Series (various models)

• Utility tractors in the 4xxx and 5xxx Series

• Specialty tractors used for orchard, vineyard, or farm applications

Commercial & Turf Mowers:

• Wide-area commercial lawn mowers (e.g., Z-Trak, Zero-Turn units)

• Large residential or commercial riding mowers with corresponding fluid systems

Construction & Industrial Equipment:

• Loaders, backhoes, skid-steers and similar diesel-powered units

• Hydraulically actuated implements that share John Deere engine/hydraulic platforms

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Product Details

• Product Type: Sealing O-Ring

• Part Number: MIU804788

• Brand: John Deere Genuine OEM

• Material: Elastomeric compound compatible with oils, fuels and hydraulic fluids

• Application: Sealing joint, fluid, and air passages on compatible John Deere engines, hydraulic systems, and gearboxes

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Why Choose the John Deere MIU804788 O-Ring

The John Deere MIU804788 O-Ring delivers reliable sealing performance essential to maintaining pressure and preventing fluid leaks within engine, hydraulic, or fuel systems. Using genuine John Deere O-rings ensures the correct size, material, and durability required for long-lasting service under field and worksite conditions, supporting overall machine reliability and reducing the risk of premature wear or failure.