20577189 Retainer | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta Retainer - Part Number: 20577189

A genuine Volvo Penta retainer used in the engine component retention assembly. It is supplied as an individual service component under part number 20577189 and is intended to restore the original fit, sealing, alignment, retention or operating function of the specified assembly. This listing supplies the named component only; adjoining parts are serviced separately.

⚙️ Key Features

• Mounting-hole pattern and formed geometry match the documented installation

• Maintains component position, routing and clearance under engine vibration

• Designed for the load and temperature at the assigned engine location

• Prevents unsupported movement of pipes, cables, filters or cooling components

• Use the specified fasteners, washers and isolators

• Check for distortion and correct alignment before final tightening

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• 20577189 - Current genuine Volvo Penta service reference

OEM / Related Numbers:

• 20576909 - Related D12 Camshaft

• 20578384 - Related Connector

• 20576874 - Related Cap Plug

• 20578566 - Related Cap Plug

• 20576626 - Related Sensor

• 20576617 - Related Sensor

• 3802190 - Related Volvo Penta turbocharger reference

• 318815 / 318754 / 56209880009 - BorgWarner/Schwitzer turbo references

• 21033328 - Flywheel starter ring

• 20405654 - Flywheel retaining screw

• 20405643 - Expansion plug

• 20459927 - Stud

• 20459928 - Washer

• 20405765 - Hexagon nut

Aftermarket / Verified Equivalents:

• No aftermarket equivalent

🚤 Compatibility

Commonly used on:

• Volvo Penta D7 industrial diesel engines

• TAD520/TAD720-series turbocharger, charging and flywheel installations

Typically suits:

• Engine models:

• TAD520VE

• TD720GE

• TAD720GE

• TAD720VE

• TAD721GE

• TAD721VE

• TAD722GE

• TAD722VE

• TAD730GE EDC4

• TAD730GE MECH

• TAD731GE MECH

• TAD750VE

• TAD760VE

• Engine Type: Volvo Penta D7 inline-six industrial diesel

• HP Range: Determined by the exact D7 engine rating

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

• Serial Applicability: Confirm the turbocharger, alternator, flywheel or belt configuration by engine serial number

🔌 Function

Holds the associated component in its designed position.

Common signs of failure or reasons for replacement:

• The part is worn, distorted, cracked, corroded or missing

• The joint loosens or develops excessive movement

• Threads, locking features or bearing surfaces are damaged

• The adjoining components no longer align or clamp correctly

• Replacement is required after removal when secure reuse cannot be confirmed

📦 Condition

• Genuine Volvo Penta part

• Brand new

• Supplied in original or equivalent packaging