20873253 Gasket Kit | Genuine Volvo Penta Part

🔧 Product Description

A genuine Volvo Penta two-piece gasket kit containing an O-ring and supporting back-up ring for selected D6 and D7 engine assemblies. The back-up ring supports the elastomer O-ring under pressure and prevents extrusion from the sealing groove.

🚤 Compatibility

Typically suits:

• Volvo Penta TAD650VE
• Volvo Penta TAD660VE
• Volvo Penta TAD750GE
• Volvo Penta TAD751GE
• Volvo Penta TAD750VE
• Volvo Penta TAD760VE

• Engine Family: TAD
• Year Range: Approximately early-mid 2000s

⚙️ Key Features

• Genuine Volvo Penta OEM two-piece gasket kit
• Correct Volvo Penta part number 20873253
• Contains one O-ring and one back-up ring
• Used in pressure-sealed engine component assemblies
• Engine type: Volvo Penta six-cylinder turbocharged industrial or generating-set diesel
• Also supersedes Volvo part number 20805529

📋 Kit Contents

• O-ring - supplied under kit number 20873253 - quantity 1; no separate Volvo service number
• Back-up ring - supplied under kit number 20873253 - quantity 1; no separate Volvo service number

🔌 Function

The O-ring forms the pressure seal while the back-up ring supports it against extrusion and deformation under operating pressure.

⚠️ Common Signs of Failure

• Oil, fuel or coolant leakage at the sealed joint
• O-ring cut or flattened
• Back-up ring split or omitted
• Seal extruded from its groove
• Leak returns after only the O-ring is replaced

🛠️ Service Notes

• Check the kit contents against the joints you are actually opening before you start, and lay the parts out so nothing is left in the bag
• Renew every gasket in the kit as a set; a used gasket has already taken its crush and will not seal a second time
• Clean the mating faces properly without gouging them — a plastic or hardwood scraper and a solvent are safer than a steel blade, especially on aluminium
• Fit gaskets dry unless the workshop manual for your engine specifies a sealant, and then use only the sealant it names
• Tighten the joint evenly in the sequence and to the figures given in the manual for your engine, and re-check after the first heat cycle where the manual calls for it

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 20873253 → Supersedes 20805533

OEM / Related Numbers

• 20805531 earlier number superseded by this part
• 20805533 earlier number superseded by this part

Other-Brand OEM Numbers

• VOE20873253

Aftermarket / Verified Equivalents

• SLP: RK-253

📦 Condition

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