O-Ring for hydraulic lift piston, 3A111-09830, 5-27-101-78, Kubota L4508, Kubota M5000, Kubota M6040, Seal ring
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  • O-Ring for hydraulic lift piston, 3A111-09830, 5-27-101-78, Kubota L4508, Kubota M5000, Kubota M6040, Seal ring
  • O-Ring for hydraulic lift piston, 3A111-09830, 5-27-101-78, Kubota L4508, Kubota M5000, Kubota M6040, Seal ring
  • O-Ring for hydraulic lift piston, 3A111-09830, 5-27-101-78, Kubota L4508, Kubota M5000, Kubota M6040, Seal ring
  • O-Ring for hydraulic lift piston, 3A111-09830, 5-27-101-78, Kubota L4508, Kubota M5000, Kubota M6040, Seal ring

O-Ring / 5.80 x 78.80 m / Kubota L4508/L4708/L5018/M5000/M6040 / 3A111-09830 / 5-27-101-78

Product code: 5-27-101-78
Brand 4FARMER
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zł36.59 netto
zł45.00
Includes VAT 23%

Lowest price from 30 days: zł45.00

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Available
10 pieces
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Product description

O-Ring of the three-point linkage hydraulic lift piston (backup ring 5-18-107-05, 04810-00800, 31391-37330) with an inner diameter of 78.80 mm and a thickness of 5.80 mm for Kubota tractors of the Kubota L4508, Kubota L4708, Kubota L5018, Kubota M5000, Kubota M6040 series and others.

An O-ring is a type of circular seal available in a wide range of sizes and diameters. The primary purpose of an O-ring is to seal in areas where high pressure is not present, but also where it is subjected to high pressure. Under high pressure , an O-ring adopts fluid-like properties (surface tension, plasticity, etc.), providing excellent sealing properties.

Dimensions :

  • inner diameter: 78.80,
  • thickness: 5.80 mm,
  • original part numbers: 04810-00800, 3A111-09830,
  • comparison numbers: 5-18-107-05,
  • part numbers: 5-27-101-78.

Tractor models :

Kubota :

  • Kubota L4508,
  • Kubota L4708,
  • Kubota L5018,
  • Kubota M5000,
  • Kubota M6040.

An O-ring seal is also resistant to high operating temperatures, and the selection of the appropriate one depends on its intended use and the material from which it is made. O-ring seals in high-pressure devices require the use of a special back-up ring.

Warehouse :
K18:F11:S01

Specifications

Condition
New

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Questions & Answers

Why is regular filter replacement (oil, air, fuel) crucial for a mini tractor?

User
Traktor.com.pl Expert – Technical Advisor • 17.02.2026
Regular filter replacement is the easiest way to extend the life of an engine from brands like Kubota or Yanmar. The oil filter removes metallic contaminants generated during operation, the air filter protects the cylinders from field dust, and the fuel filter prevents water and dirt from damaging the precision injection system. We recommend replacing filters every 50-100 operating hours or at least once per season to ensure optimal engine performance.

How to properly select and sharpen mower blades for a Japanese tractor?

User
Traktor.com.pl Expert – Technical Advisor • 17.02.2026
When selecting mower blades, consider the mower deck model and the blade length and center bore diameter. Maintaining blade balance is crucial when sharpening – an unbalanced blade causes vibrations that damage the hub bearings. Remember that sharp blades mean healthier grass, a cleaner cut, and less strain on the engine of your Iseki or Mitsubishi tractor.

How to identify the correct V-belt size and how to care for it?

User
Traktor.com.pl Expert – Technical Advisor • 17.02.2026
It's best to read the markings on the side of the old V-belt. If they are illegible, measure the belt width and its outer length (La). On Shibaura and Hinomoto tractors, it's important to regularly check the belt tension – too loose a belt will cause slippage and faster wear, while too tight a belt can cause alternator or water pump bearing failure.

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