Cylinder head gasket, MM409-815, Ø 78 mm, Mitsubishi K3E, Mitsubishi MT18, Case 254, Case 255, Case 1120, MM409815, Mitsubishi
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  • Cylinder head gasket, MM409-815, Ø 78 mm, Mitsubishi K3E, Mitsubishi MT18, Case 254, Case 255, Case 1120, MM409815, Mitsubishi
  • Cylinder head gasket, MM409-815, Ø 78 mm, Mitsubishi K3E, Mitsubishi MT18, Case 254, Case 255, Case 1120, MM409815, Mitsubishi
  • Cylinder head gasket, MM409-815, Ø 78 mm, Mitsubishi K3E, Mitsubishi MT18, Case 254, Case 255, Case 1120, MM409815, Mitsubishi
  • Cylinder head gasket, MM409-815, Ø 78 mm, Mitsubishi K3E, Mitsubishi MT18, Case 254, Case 255, Case 1120, MM409815, Mitsubishi

Head gasket / Mitsubishi K3E / Mitsubishi MT18 / MT2001 / D2501 / Case 1120 / 254 / 255

Product code: MM409-815
7 people purchased this product
zł195.12 netto
zł240.00
Includes VAT 23%

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Product description

Engine head gasket (piston 5-23-201-38) with dimensions 153 x 303 mm , piston hole diameter 78 mm and thickness 1.30 mm for Mitsubishi tractors of the Mitsubishi MT18, Mitsubishi MT2001, Mitsubishi D2501 , Case series Case 254, Case 255, Case 1120 with Mitsubishi K3E engines and others.

The cylinder head gasket is a gasket installed at the junction between the cylinder head and the engine block. The connection between the block and the cylinder head must be airtight for the engine to function properly. The cylinder head gasket seals the cylinders, coolant passages, and lubrication channels, and prevents the two fluids from mixing. The gasket's second purpose is thermal insulation, as part of the engine block can heat up to 2000 degrees Celsius from the combustion chambers.

Dimensions :

  • length: 303 mm,
  • width: 153 mm,
  • piston hole diameter: 78 mm,
  • part numbers: MM409-815, MM409815.

Engine models :

  • Mitsubishi K3E.

Tractor models:

  • Mitsubishi MT18,
  • Mitsubishi MT2001,
  • Mitsubishi D2501,
  • Case 254,
  • Case 255,
  • Case 1120.

The first signs of head gasket wear, gasket burnout, or gasket blowout are uneven operation of the warm engine, loss of coolant or oil, presence of oil in the coolant and coolant in the engine oil, or air bubbles visible to the naked eye in the coolant (expansion tank).

Magazine : M01 D13 S01

*Photos are for illustrative purposes only and may differ in detail from the delivered product due to differences in production over the years.

Specifications

Condition
New
Engine model
- Mitsubishi K3E
Seal type
Head gasket
Width (mm)
153
Production
Substitute
Parts
Engine
Tractor models
Mitsubishi MT18, Case 254, Case 255, Case 1120, Mitsubishi D2501, - Mitsubishi MT2001
Length (mm)
303
Diameter of piston holes (mm)
78
Part number
MM409-815

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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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