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Yanmar cylinder head gaskets

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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
another test

33 item(s)

JOINT DE CULASSE YANMAR 1.0MM

RÉF. ORB63056

Joint de culasse épaisseur 1mm pour moteurs Yanmar :

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

JOINT DE CULASSE YANMAR 1.1MM

RÉF. ORB63057

Joint de culasse épaisseur 1.1mm disposant de 3 encoches Mark 3 pour moteurs Yanmar :

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

JOINT DE CULASSE YANMAR 1.2MM

RÉF. ORB63053

Joint de culasse pour moteur yanmar épaisseur 1.2mm pour moteurs Yanmar :

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

JOINT DE CULASSE YANMAR 1.2MM

RÉF. ORB63058

Joint de culasse épaisseur 1.2mm pour moteurs Yanmar :

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

JOINT DE CULASSE YANMAR 1.3MM

RÉF. ORB63054

Joint de culasse épaisseur 1.3mm pour moteurs Yanmar :

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

JOINT DE CULASSE YANMAR 1.4MM

RÉF. ORB63055

Joint de culasse épaisseur 1.4mm pour moteurs Yanmar :

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

JOINT DE CULASSE YANMAR 2GM/F

RÉF. ORB63028

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

Livraison express → Thursday 27 August

Livraison classique → Monday 31 August

Commandez dans les

00 h 00 m 00 s

Disponible

€67.08 VAT included

€55.90 VAT excluded

JOINT DE CULASSE YANMAR SERIE 4JH2 1.3MM

RÉF. DM_MA_129573-01341 | YANMAR

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

€165.13 VAT included

€137.61 VAT excluded

YANMAR 1GM CYLINDER HEAD GASKET

RÉF. ORB63023

Cylinder head gasket for YANMAR 1GM engine.

Livraison express → Thursday 27 August

Livraison classique → Monday 31 August

Commandez dans les

00 h 00 m 00 s

Disponible

€45.60 VAT included

€38.00 VAT excluded

YANMAR 1GM10 CYLINDER HEAD GASKET

RÉF. ORB63024

Cylinder head gasket for YANMAR 1GM10 engine.

Livraison express → Thursday 27 August

Livraison classique → Monday 31 August

Commandez dans les

00 h 00 m 00 s

Disponible

€48.00 VAT included

€40.00 VAT excluded

YANMAR 2GM20/F CYLINDER HEAD GASKET

RÉF. ORB63029

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

Livraison express → Thursday 27 August

Livraison classique → Monday 31 August

Commandez dans les

00 h 00 m 00 s

Disponible

€54.00 VAT included

€45.00 VAT excluded

YANMAR 2QM15 CYLINDER HEAD GASKET

RÉF. 124060-01331 | YANMAR

Livraison express → Thursday 27 August

Livraison classique → Monday 31 August

Commandez dans les

00 h 00 m 00 s

Disponible

€65.09 VAT included

€54.24 VAT excluded

YANMAR 2QM20 CYLINDER HEAD GASKET

RÉF. 124772-01331 | YANMAR

Livraison express → Thursday 27 August

Livraison classique → Monday 31 August

Commandez dans les

00 h 00 m 00 s

Disponible

€198.42 VAT included

€165.35 VAT excluded

YANMAR 3GM CYLINDER HEAD GASKET

RÉF. ORB63033

Cylinder head gasket for YANMAR 3GM engine.

Livraison express → Thursday 27 August

Livraison classique → Monday 31 August

Commandez dans les

00 h 00 m 00 s

Disponible

€78.00 VAT included

€65.00 VAT excluded

YANMAR 3GM30/F CYLINDER HEAD GASKET

RÉF. ORB63034

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

Livraison express → Thursday 27 August

Livraison classique → Monday 31 August

Commandez dans les

00 h 00 m 00 s

Disponible

€66.00 VAT included

€55.00 VAT excluded

YANMAR 3HM/F CYLINDER HEAD GASKET

RÉF. ORB63036 | YANMAR

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

Livraison express → Thursday 27 August

Livraison classique → Monday 31 August

Commandez dans les

00 h 00 m 00 s

Disponible

€94.61 VAT included

€78.84 VAT excluded

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 reference	Reference type	Indicated applications	Points 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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Yanmar cylinder head gaskets

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

33 item(s)

JOINT DE CULASSE YANMAR 1.0MM

JOINT DE CULASSE YANMAR 1.1MM

JOINT DE CULASSE YANMAR 1.2MM

JOINT DE CULASSE YANMAR 1.2MM

JOINT DE CULASSE YANMAR 1.3MM

JOINT DE CULASSE YANMAR 1.4MM

JOINT DE CULASSE YANMAR 2GM/F

JOINT DE CULASSE YANMAR SERIE 4JH2 1.3MM

YANMAR 1GM CYLINDER HEAD GASKET

YANMAR 1GM10 CYLINDER HEAD GASKET

YANMAR 2GM20/F CYLINDER HEAD GASKET

YANMAR 2QM15 CYLINDER HEAD GASKET

YANMAR 2QM20 CYLINDER HEAD GASKET

YANMAR 3GM CYLINDER HEAD GASKET

YANMAR 3GM30/F CYLINDER HEAD GASKET

YANMAR 3HM/F CYLINDER HEAD GASKET

How can you identify a faulty Yanmar cylinder head gasket?

What are the golden rules for reliable reassembly?

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