20450739 O-Ring | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta D5/D7 O-Ring - Part Number: 20450739

A genuine Volvo Penta o-ring used in the thermostat housing and coolant-outlet assembly. It is supplied as an individual service component under part number 20450739 and is intended to restore the original fit, alignment, sealing, support or operating function of the specified assembly. This listing supplies the named part only; adjoining components shown in an exploded view are serviced separately unless explicitly stated.

⚙️ Key Features

• Genuine Volvo Penta service component

• Designed for the thermostat housing and coolant-outlet assembly

• Designed to restore the specified fluid, pressure or gas seal

• Suitable for maintenance, repair or overhaul of the matching serial-controlled assembly

• Exact engine and serial-number confirmation is recommended before installation

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• 20450739 - Current genuine Volvo Penta service reference

OEM / Related Numbers:

• 20450739 - Current genuine Volvo Penta service reference

Aftermarket / Verified Equivalents:

• No aftermarket equivalent

🚤 Compatibility

Commonly used on:

• Volvo Penta D5 and D7 industrial diesel cooling and auxiliary systems

• Engine installations using the matching serial-controlled assembly

Typically suits:

• Engine models:

• D5A-A TA

• D5A-B TA

• D7A-T

• D7A-TA

• D7A-B TA

• D7C-A TA

• D7C-B TA

• TD420VE

• TAD420VE

• TD520VE

• TAD520VE

• TAD620VE

• TAD650VE

• TAD660VE

• TD720VE

• TAD720VE

• TAD734GE

• TAD750VE

• TAD760VE

• TAD761VE

• TAD762VE

• TAD763VE

• TAD764VE

• TAD765VE

• Engine Type: Volvo Penta D5/D7 inline diesel engine family

• HP Range: Determined by the exact engine model and rating

• Year Range: Engine-generation and serial-number controlled

• Serial Applicability: Confirm the complete engine or product serial number and the exact assembly position before ordering

🔌 Function

Creates an elastomeric seal between mating surfaces to prevent fluid, air or pressure leakage.

Common signs of failure or reasons for replacement:

• Fluid, air, exhaust gas or pressure leakage develops at the joint

• The sealing material is flattened, cut, brittle, swollen or heat-damaged

• Contamination enters the assembly or two fluid circuits begin to mix

• The joint no longer maintains the specified pressure or vacuum

• Replacement is required whenever the mating components are dismantled and the seal cannot be safely reused

📦 Condition

• Genuine Volvo Penta part

• Brand new

• Supplied in original or equivalent packaging