1543572 Sealing Ring | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta sealing ring, part number 1543572, used as a sealing element within the cooling system on a broad span of inline-six marine and industrial diesel engines. It supersedes the earlier thermostat housing pipe 1543869 and water pump rear section 1543809, and two of these rings are called for when building up that replacement assembly. The ring is also included in the relevant gasket kit.

🚤 Compatibility

• Engine Family: TAMD, TWD, TID, TD, TAD

Full model list at the end of this description.

⚙️ Key Features

• OEM Volvo Penta part number 1543572
• Sealing ring supplied as an individual service item
• Included in the gasket kit for the assembly it serves
• Supersedes previous part numbers 1543809 and 1543869
• Two pieces are required in the replacement assembly for the superseded thermostat housing pipe and water pump rear section
• Associated with the cooling system group through the thermostat housing and water pump components it seals
• Net weight approximately 0.007 kg
• Fits TID162, TD164, TWD1620, TWD1630, TAD1630, TAD1631, TAMD63, TAMD71, TAMD73, TAMD74, TAMD75, TAMD162, TAMD163 and TAMD165 series engines
• Engine type: Volvo Penta heavy-duty inline-six diesel engine
• Quantity varies by assembly, most commonly two

📋 Kit Contents

• Included in gasket kit.

🔌 Function

The sealing ring forms a leak-tight joint between mating cooling system components, keeping coolant contained under operating pressure. It compensates for minor surface irregularities at the joint face and must be renewed whenever the assembly is disturbed.

⚠️ Common Signs of Failure

• Coolant weeping or dripping from the joint face
• Loss of coolant level with no other identifiable leak point
• Pressure loss during a cooling system pressure test
• Hardened, flattened, cracked or split ring on inspection
• Corrosion staining or deposit trails around the sealing surface

🛠️ Service Notes

• Always fit a new sealing ring rather than reusing the old one — a ring that has been compressed once has taken a set and will not seal reliably a second time
• Clean the groove or seat and check it for scoring, corrosion and old sealant before fitting; a mark across the sealing face will leak however good the ring is
• Ease the ring into place without stretching, twisting or dragging it over sharp edges or threads, and check it is seated squarely all the way round before closing the joint
• Do not add sealant or jointing compound unless the workshop manual for your engine calls for it, and tighten the joint or union to the figure given in that manual
• Check the joint for weeping once the engine has been run up to temperature and allowed to cool, as many sealing rings only show a leak after a heat cycle

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 1543572 → Supersedes 1543809

OEM / Related Numbers

• 1543869 earlier number superseded by this part
• 1543809 earlier number superseded by this part
• 1543577 - Related oil-cooler and housing sealing ring
• 1543608 - Oil valve housing
• 1543615 - Oil-cooler bypass spring
• 471634 - Related coolant pipe
• 1543539 - Water-pump seal retainer

Aftermarket / Verified Equivalents

• SLP: EPL-572

📦 Condition

• Genuine Volvo Penta part
• Brand new
• Supplied in original or equivalent packaging

🔎 Full Model Compatibility

Typically suits:

• Volvo Penta TAMD74P-A, TAMD74P-B, TAMD74A, TAMD74C-A, TAMD74C-B, TAMD74L-A, TAMD74L-B
• Volvo Penta TAMD162C-C, TAMD162A, TAMD162B, TAMD162C, TAMD162C-B
• Volvo Penta TAD1630G, TAD1630GE, TAD1630P, TAD1630PB
• Volvo Penta TID162AG, TID162AGP, TID162AP, TID162APB
• Volvo Penta TWD1630G, TWD1630P, TWD1630PP, TWD1630V
• Volvo Penta TAMD165A, TAMD165C, TAMD165P
• Volvo Penta TAD1631GE, TAD1631G
• Volvo Penta TAMD163A-A, TAMD163P-A
• Volvo Penta TAMD63L-A, TAMD63P-A
• Volvo Penta TAMD71B
• Volvo Penta TAMD73WJ-A
• Volvo Penta TAMD75P-A
• Volvo Penta TD164KAE
• Volvo Penta TWD1620G