Yanmar cylinder head gaskets

Yanmar cylinder head gaskets

What is the purpose of the cylinder head gasket on a Yanmar marine engine?

The Yanmar cylinder head gasket seals the connection between the cylinder head and the engine block. On a marine diesel engine, it must withstand high combustion pressures while keeping the oil passages, cooling circuits and combustion chambers separate.

Depending on the engine type, the cooling circuit may contain fresh water with coolant, seawater, or both in the case of indirect cooling with a heat exchanger. A failed cylinder head gasket can lead to loss of compression, overheating, oil contamination, coolant consumption or serious internal damage if the engine continues to run.

When replacing it, you can choose an original Yanmar cylinder head gasket or a high-quality equivalent aftermarket gasket, provided that compatibility is checked precisely. The reference, thickness, number of notches or identification holes, engine serial number and block generation must be verified before ordering.

Important: never order a cylinder head gasket based only on the engine power or commercial series. Two similar Yanmar engines may use different gaskets depending on year, type, cooling system, repair size or piston protrusion.

  • - test
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33 item(s)

JOINT DE CULASSE YANMAR 2GM/F

RÉF. ORB63028

Joint de culasse pour moteur YANMAR 2GM - 2GMF.

Livraison express Wednesday 15 July
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Livraison classique Friday 17 July
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00 h 00 m 00 s
Disponible
€67.08 VAT included
€55.90 VAT excluded
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JOINT DE CULASSE YANMAR SERIE 4JH2 1.3MM

RÉF. DM_MA_129573-01341 | YANMAR

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€165.13 VAT included
€137.61 VAT excluded
YANMAR YANMAR
Quantity
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Free quote with no obligation
Response within 24 business hours

YANMAR 1.0MM HEAD GASKET

RÉF. ORB63056

1mm thick cylinder head gasket for Yanmar engines:

6LP-STE

6LP-STP

6LP-STZE

6LP-STZE1

6LPA-STE

6LPA-STP

6LPA-STZP

Pièce non en stock.

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On demand
€234.00 VAT included
€195.00 VAT excluded
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Free quote with no obligation
Response within 24 business hours

YANMAR 1.1MM CYLINDER HEAD GASKET

RÉF. ORB63057

1.1mm thick cylinder head gasket with 3 Mark 3 notches for Yanmar engines:

6LP-STE

6LP-STP

6LP-STZE

6LP-STZE1

6LPA-STE

6LPA-STP

6LPA-STZP

Pièce non en stock.

Demandez le délai de réapprovisionnement et le tarif en cliquant sur le bouton « Ask for a quote ».

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On demand
€234.00 VAT included
€195.00 VAT excluded
Quantity
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Free quote with no obligation
Response within 24 business hours

YANMAR 1.2MM CYLINDER HEAD GASKET

RÉF. ORB63053

Cylinder head gasket for Yanmar engine thickness 1.2mm for Yanmar engines:

6LP-DTE

6LP-DTP

6LP-DTZE,

6LP-DTZE1

6LP-DTZP

6LP-DTZP1

6LPA-DTE

6LPA-DTP,

6LPA-DTZE

6LPA-DTZP

Pièce non en stock.

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On demand
Quantity
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Free quote with no obligation
Response within 24 business hours

YANMAR 1.2MM CYLINDER HEAD GASKET

RÉF. ORB63058

Cylinder head gasket thickness 1.2mm for Yanmar engines:

6LP-STE

6LP-STP

6LP-STZE

6LP-STZE1

6LPA-STE

6LPA-STP

6LPA-STZP

Pièce non en stock.

Demandez le délai de réapprovisionnement et le tarif en cliquant sur le bouton « Ask for a quote ».

Un conseiller traitera votre demande dans la journée.

On demand
€234.00 VAT included
€195.00 VAT excluded
Quantity
Voir le produit
Free quote with no obligation
Response within 24 business hours

YANMAR 1.3MM CYLINDER HEAD GASKET

RÉF. ORB63054

Cylinder head gasket thickness 1.3mm for Yanmar engines:

6LP-DTE

6LP-DTP

6LP-DTZE,

6LP-DTZE1

6LP-DTZP

6LP-DTZP1

6LPA-DTE

6LPA-DTP,

6LPA-DTZE

6LPA-DTZP

Pièce non en stock.

Demandez le délai de réapprovisionnement et le tarif en cliquant sur le bouton « Ask for a quote ».

Un conseiller traitera votre demande dans la journée.

On demand
Quantity
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Free quote with no obligation
Response within 24 business hours

YANMAR 1.4MM CYLINDER HEAD GASKET

RÉF. ORB63055

Cylinder head gasket thickness 1.4mm for Yanmar engines:

6LP-DTE

6LP-DTP

6LP-DTZE,

6LP-DTZE1

6LP-DTZP

6LP-DTZP1

6LPA-DTE

6LPA-DTP,

6LPA-DTZE

6LPA-DTZP

Pièce non en stock.

Demandez le délai de réapprovisionnement et le tarif en cliquant sur le bouton « Ask for a quote ».

Un conseiller traitera votre demande dans la journée.

On demand
€234.00 VAT included
€195.00 VAT excluded
Quantity
Voir le produit
Free quote with no obligation
Response within 24 business hours

YANMAR 1GM CYLINDER HEAD GASKET

RÉF. ORB63023

Cylinder head gasket for YANMAR 1GM engine.

Livraison express Wednesday 15 July
|
Livraison classique Friday 17 July
Commandez dans les
00 h 00 m 00 s
Disponible
€45.60 VAT included
€38.00 VAT excluded
Quantity
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YANMAR 1GM10 CYLINDER HEAD GASKET

RÉF. ORB63024

Cylinder head gasket for YANMAR 1GM10 engine.

Livraison express Wednesday 15 July
|
Livraison classique Friday 17 July
Commandez dans les
00 h 00 m 00 s
Disponible
€48.00 VAT included
€40.00 VAT excluded
Quantity
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YANMAR 2GM20/F CYLINDER HEAD GASKET

RÉF. ORB63029

Cylinder head gasket for YANMAR 2GM20 - 2GM20F engine.

Livraison express Wednesday 15 July
|
Livraison classique Friday 17 July
Commandez dans les
00 h 00 m 00 s
Disponible
€54.00 VAT included
€45.00 VAT excluded
Quantity
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YANMAR 2QM15 CYLINDER HEAD GASKET

RÉF. 124060-01331 | YANMAR
Livraison express Wednesday 15 July
|
Livraison classique Friday 17 July
Commandez dans les
00 h 00 m 00 s
Disponible
€65.09 VAT included
€54.24 VAT excluded
YANMAR YANMAR
Quantity
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YANMAR 2QM20 CYLINDER HEAD GASKET

RÉF. 124772-01331 | YANMAR
Livraison express Wednesday 15 July
|
Livraison classique Friday 17 July
Commandez dans les
00 h 00 m 00 s
Disponible
€198.42 VAT included
€165.35 VAT excluded
YANMAR YANMAR
Quantity
Voir le produit

YANMAR 3GM CYLINDER HEAD GASKET

RÉF. ORB63033

Cylinder head gasket for YANMAR 3GM engine.

Livraison express Wednesday 15 July
|
Livraison classique Friday 17 July
Commandez dans les
00 h 00 m 00 s
Disponible
€78.00 VAT included
€65.00 VAT excluded
Quantity
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YANMAR 3GM30/F CYLINDER HEAD GASKET

RÉF. ORB63034

Cylinder head gasket for YANMAR 3GM30 - 3GM30F engine.

Livraison express Wednesday 15 July
|
Livraison classique Friday 17 July
Commandez dans les
00 h 00 m 00 s
Disponible
€66.00 VAT included
€55.00 VAT excluded
Quantity
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YANMAR 3HM/F CYLINDER HEAD GASKET

RÉF. ORB63036 | YANMAR

Cylinder head gasket for YANMAR 3HM - 3HMF engine.

Livraison express Wednesday 15 July
|
Livraison classique Friday 17 July
Commandez dans les
00 h 00 m 00 s
Disponible
€94.61 VAT included
€78.84 VAT excluded
YANMAR YANMAR
Quantity
Voir le produit
33 item(s)
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How can you identify a faulty Yanmar cylinder head gasket?

The symptoms below may indicate a damaged cylinder head gasket, but they are not a definitive diagnosis. Overheating, a clogged heat exchanger, a faulty water pump, a blocked exhaust elbow or a defective injector can cause similar signs.

  • Bubbles in the cooling circuit: combustion gases may pass into the water circuit. On an engine with a heat exchanger, this can create overpressure or visible bubbles in the expansion tank.
  • Persistent white smoke from the exhaust: water or coolant may enter a cylinder and vaporise. However, light vapour during a cold start is not enough to conclude that the head gasket has failed.
  • Abnormal overheating: a rise in temperature under load, with no visible external leak, may come from the head gasket, but also from a water pump, thermostat, heat exchanger or seawater circulation fault.
  • Emulsified oil or “mayonnaise” appearance: water in the engine oil is a serious sign. It may come from a head gasket, but also from a heat exchanger, oil cooler or external water ingress depending on the engine.
  • Unexplained drop in coolant level: on an indirectly cooled engine, regular loss with no visible leak should raise suspicion of an internal leak or passage towards the exhaust.
  • Difficult starting or low compression: a gasket failure between two cylinders or towards the outside can cause compression loss and rough running.
  • Black marks or seepage at the gasket surface: combustion deposits or visible leaks between the block and the cylinder head may indicate a loss of sealing.

What are the golden rules for reliable reassembly?

  • Identify the correct gasket before installation: compare the old and new gasket: bores, oil passages, water passages, thickness marks, notches, holes and reference.
  • Check cylinder head flatness: a removed cylinder head must be checked with a straight edge and feeler gauges. A warped cylinder head can quickly destroy a new gasket.
  • Check the condition of the block: the block gasket surface must be clean, free of scratches, corrosion and deposits around the water passages.
  • Clean the gasket surfaces carefully: remove residue from the old gasket with a suitable tool, without digging into or scratching aluminium or cast iron. Aggressive abrasives should be avoided because they can alter flatness.
  • Do not install the gasket upside down: check markings, installation direction and alignment of all passages before fitting the cylinder head.
  • Follow the manufacturer’s tightening procedure: use a calibrated torque wrench and follow the tightening order, torque values and any angles specified in the Yanmar workshop manual.
  • Replace bolts or studs if required by the manual: some engines may require cylinder head bolts to be replaced or their condition to be checked precisely.
  • Do not generalise retightening after running-in: on some older engines, a check or retightening may be scheduled after warm-up. On others, it must not be done. Always follow the procedure for the relevant engine manual.
  • Bleed and check the cooling system after reassembly: fill the circuit correctly, bleed air if necessary and monitor the temperature during the first tests.

What are the compatibilities and references for Yanmar cylinder head gaskets?

The references below come from the DAM Marine catalogue for Yanmar cylinder head gaskets. Some are OEM Yanmar references, while others are DAM/ORB catalogue references. Before ordering, always check the exact engine model, type, serial number, gasket thickness and identification marks present on the old gasket.

Displayed referenceReference typeIndicated applicationsPoints to check
119415-01330 OEM Yanmar Yanmar cylinder head gasket — application to be confirmed depending on engine Check the exact model and serial number
ORB63056 DAM/ORB catalogue reference 6LP-STE, 6LP-STP, 6LP-STZE, 6LP-STZE1, 6LPA-STE, 6LPA-STP, 6LPA-STZP — thickness 1.0 mm Check the gasket thickness and identification marks
ORB63057 DAM/ORB catalogue reference 6LP-STE, 6LP-STP, 6LP-STZE, 6LP-STZE1, 6LPA-STE, 6LPA-STP, 6LPA-STZP — thickness 1.1 mm, Mark 3 Check the notches/marks and the original thickness
ORB63053 DAM/ORB catalogue reference 6LP-DTE, 6LP-DTP, 6LP-DTZE, 6LP-DTZE1, 6LP-DTZP, 6LP-DTZP1, 6LPA-DTE, 6LPA-DTP, 6LPA-DTZE, 6LPA-DTZP — thickness 1.2 mm Do not confuse 6LP-DT and 6LP-ST versions
ORB63058 DAM/ORB catalogue reference 6LP-STE, 6LP-STP, 6LP-STZE, 6LP-STZE1, 6LPA-STE, 6LPA-STP, 6LPA-STZP — thickness 1.2 mm Check the engine version and gasket thickness
ORB63054 DAM/ORB catalogue reference 6LP-DTE, 6LP-DTP, 6LP-DTZE, 6LP-DTZE1, 6LP-DTZP, 6LP-DTZP1, 6LPA-DTE, 6LPA-DTP, 6LPA-DTZE, 6LPA-DTZP — thickness 1.3 mm Check the thickness marks before ordering
ORB63055 DAM/ORB catalogue reference 6LP-DTE, 6LP-DTP, 6LP-DTZE, 6LP-DTZE1, 6LP-DTZP, 6LP-DTZP1, 6LPA-DTE, 6LPA-DTP, 6LPA-DTZE, 6LPA-DTZP — thickness 1.4 mm Check the original thickness, piston protrusion and gasket marks
ORB63023 DAM/ORB catalogue reference Yanmar 1GM Do not confuse 1GM and 1GM10
ORB63024 DAM/ORB catalogue reference Yanmar 1GM10 Check the engine type and serial number
ORB63028 DAM/ORB catalogue reference Yanmar 2GM, 2GMF Do not confuse with 2GM20 / 2GM20F
ORB63029 DAM/ORB catalogue reference Yanmar 2GM20, 2GM20F Check the exact variant: F, YEU, C or another installation
124060-01331 OEM Yanmar Yanmar 2QM15 Confirm with the engine serial number
124772-01331 OEM Yanmar Yanmar 2QM20 Confirm with the engine serial number
ORB63033 DAM/ORB catalogue reference Yanmar 3GM Do not confuse 3GM, 3GMF, 3GM30 and 3GM30F
ORB63034 DAM/ORB catalogue reference Yanmar 3GM30, 3GM30F Check the generation and cooling type
ORB63036 DAM/ORB catalogue reference / marked Yanmar on the page Yanmar 3HM, 3HMF Do not confuse with 3HM35
ORB63035 DAM/ORB catalogue reference Yanmar 3HM35 Check the 3HM35 / 3HM35F version
ORB63039 DAM/ORB catalogue reference / marked Yanmar on the page Yanmar 3JH4 / 3JH5 Check the exact version: 3JH4E, 3JH5E, 3JH5AE, etc.
121370-01332 OEM Yanmar Yanmar 3QM30 Confirm with the exact engine type
119515-01331 OEM Yanmar Yanmar 3YM20 Check serial number and generation
119717-01331 OEM Yanmar Yanmar 3YM30 Check serial number and generation
129693-01341 OEM Yanmar Yanmar 4JH4 Check the exact version: 4JH4E, 4JH4-TE, 4JH4-HTE, etc.
ORB63050 DAM/ORB catalogue reference Yanmar 3JH2 series: 3JH2, 3JH2BE, 3JH2E, 3JH2Z Check the exact 3JH2 variant
ORB63038 DAM/ORB catalogue reference Yanmar 3JH3, 3JH3E, 3JH3CE Check the exact variant and engine generation
ORB63045 DAM/ORB catalogue reference Yanmar 4JH, 4JH-HT, 4JH-HTE, 4JH-T, 4JH-TE, 4JHE Check the thickness and engine version
DM_MA_129573-01341 DAM reference associated with a Yanmar reference Yanmar 4JH2 series — thickness 1.3 mm Check the thickness: 1.3 mm or another variant
ORB63046 DAM/ORB catalogue reference Yanmar 4JH2-DTE, 4JH2-HTE, 4JH2-TE, 4JH2-UTB, 4JH2-UTE, 4JH2E — thickness 1.4 mm Do not confuse with the 4JH2 1.3 mm gasket
ORB63043 DAM/ORB catalogue reference Yanmar 4JH3-DTE / 4JH3-HTE series Check the exact 4JH3 version
ORB63041 DAM/ORB catalogue reference Yanmar 4JH3, 4JH3E, 4JH3CE, 4JH3ZA, 4JH3-TCE, 4JH3-TE Check whether it is a naturally aspirated or turbo version
ORB63042 DAM/ORB catalogue reference Yanmar 4JH4 series Check compatibility with OEM reference 129693-01341 if necessary
ORB63047 DAM/ORB catalogue reference Yanmar 4LH series — thickness 1.3 mm Check the 4LH / 4LHA version and gasket thickness
ORB63026 DAM/ORB catalogue reference Yanmar YSM12, YSB12, YSE12 Check the exact engine generation
ORB63025 DAM/ORB catalogue reference Yanmar YSM8, YSB8, YSE8 Also indicated as included in the ORB61002 decarbonizing gasket set
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