20580795 Voltage Regulator | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta D5/D7 Alternator Voltage Regulator - Part Number: 20580795

A genuine Volvo Penta voltage regulator used in the alternator output-control system. It is supplied as an individual service component under part number 20580795 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

• Dedicated output regulator for Volvo Penta 28V 140A alternator 20580794

• Controls field current to stabilise charging voltage as load and engine speed change

• Designed for the alternator's internal electrical and brush arrangement

• Helps protect batteries and electrical equipment from undercharge and overvoltage

• Requires sound battery cables, grounds and alternator windings for accurate diagnosis

• Check charging voltage and ripple before condemning the regulator

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• 20580795 - Current genuine Volvo Penta service reference

OEM / Related Numbers:

• 20580795 - Matching regulator for alternator 20580794

• 20580795 - Voltage regulator for alternator 20580794

• 20580794 / 20460893 - Matching alternator references

• 20580794 - Related D5/D7 28V 140A Alternator

• 20580876 - Related Spacer

• 20580933 - Related Hose

• 20460893 - Earlier alternator reference

• 3803960 - Volvo Penta remanufactured alternator

• 20460371 - Alternator fan

• 20460369 - Washer

• 20460368 - Nut

• 20460370 - Woodruff key

• 20460359 - Pulley

• 978774 - V-belt set

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

Controls alternator field current to maintain the specified charging voltage.

Common signs of failure or reasons for replacement:

• Charging voltage is consistently too high or too low

• Battery voltage fluctuates with engine speed

• The battery overheats or remains undercharged

• Alternator output becomes intermittent despite sound wiring

• Testing shows incorrect field-current control

📦 Condition

• Genuine Volvo Penta part

• Brand new

• Supplied in original or equivalent packaging