1542780 Sealing Ring | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta sealing ring, part number 1542780, forming part of the cooling system group. It seals a joint within the coolant circuit to prevent leakage and maintain system pressure. Supplied as a single ring and commonly renewed whenever the associated cooling component is disturbed or overhauled.

🚤 Compatibility

Typically suits:

• Volvo Penta TAD840GE
• Volvo Penta TAD853VE
• Volvo Penta TAD880-84VE
• Volvo Penta TAD580-83VE
• Volvo Penta TAD570-72VE
• Volvo Penta TAD570-71VE-B
• Volvo Penta TID120FPP
• Volvo Penta TID120FG
• Volvo Penta TID120HPP
• Volvo Penta TID121FG
• Volvo Penta TAD840-43VE
• Volvo Penta TAD850-52VE
• Volvo Penta TAD870-73VE
• Volvo Penta TADH880-84VE

• Engine Family: TAD, TID, TADH
• Year Range: Approximately 1970s-2010s

⚙️ Key Features

• OEM Volvo Penta part number 1542780
• System group: Cooling System
• Fits TAD and TID series industrial and generator-set diesel engines
• Single-piece service item, recommended for replacement whenever the joint is disturbed
• Engine type: Volvo / Volvo Penta turbocharged heavy-duty diesel
• Quantity varies by assembly, most commonly three

🔌 Function

The sealing ring creates a leak-tight joint between mating components in the engine's coolant circuit. It maintains cooling system pressure and prevents coolant loss at the sealing face.

⚠️ Common Signs of Failure

• Visible coolant weeping or dripping at the joint
• Loss of coolant level with no other identifiable leak source
• Hardened, cracked or flattened ring on inspection
• Loss of cooling system pressure or difficulty holding a pressure test
• Coolant residue or staining around the mating surfaces

🛠️ 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

• Renault 74 01 542 780 corresponding reference

OEM / Related Numbers

• 1542776 related V-clamp
• 1542735 related intercooler
• 476828 related charge-air hose

Other-Brand OEM Numbers

• VOE1542780
• Renault: 74 01 542 780
• Victor Reinz: 70-42927-00

Aftermarket / Verified Equivalents

• DT Spare Parts: 2.15026
• SLP: SR-2780
• Auger: 105013
• Febi Bilstein: 11926
• Sampa: 115.A558
• DPH: 1248436

📦 Condition

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