20563687 Control Unit | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta D5/D7 Relay Control Unit - Part Number: 20563687

A genuine Volvo Penta relay/control unit used in D5/D7 generator electrical systems, including glow-time control applications. It replaces earlier control-unit references and switches the corresponding electrical load.

⚙️ Key Features

• Application-specific Volvo Penta electronic control hardware

• Current relay/control-unit reference replacing 20518787

• Connector pinout, power supply and software data must match the engine serial number

• Processes sensor inputs and commands the documented relay, fuel or engine-control outputs

• Protected housing is designed for engine vibration and industrial operating conditions

• Programming or parameter transfer may be required after replacement

• Confirm grounds, supply voltage, network wiring and actuator circuits before replacing the unit

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• 20563687 - Current genuine Volvo Penta service reference

OEM / Related Numbers:

• 20563687 → Supersedes 20518787

• 20459871 - Earlier relay reference

• 20563697 - Related Charge Air Pipe

• 20563945 - Related Seal

• 20563999 - Related Screw

• 20564378 - Related Spacer Sleeve

• 20518787 - Earlier control-unit reference

• 20555354 - Related charge-air pipe

• 20405950 / 20585438 - Related charge-air-cooler references

Aftermarket / Verified Equivalents:

• No aftermarket equivalent

🚤 Compatibility

Commonly used on:

• Volvo Penta D5 and D7 industrial diesel engines

• Generator, variable-speed and propulsion packages using the matching serial-controlled assembly

Typically suits:

• Engine models:

• TD420VE

• TAD420VE

• TD520GE

• TAD520GE

• TAD520VE

• TAD530GE EDC4

• TAD530GE MECH

• TAD531GE EDC4

• TAD531GE MECH

• TAD532GE EDC4

• TAD620VE

• TD720GE

• TD720VE

• TAD720GE

• TAD720VE

• TAD721GE

• TAD721VE

• TAD722GE

• TAD722VE

• TAD730GE EDC4

• TAD730GE MECH

• TAD731GE

• TAD732GE

• TAD733GE

• TAD734GE

• TAD750GE

• TAD751GE

• TAD752GE

• TAD753GE

• TAD750VE

• TAD760VE

• Engine Type: Volvo Penta D5/D7 inline industrial diesel 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 model, serial number and exact assembly position

🔌 Function

Processes signals and controls the corresponding electrical, fuel or engine-management function.

Common signs of failure or reasons for replacement:

• The engine will not start or enters a derate condition

• Multiple unrelated electrical or engine-control faults appear

• Communication with diagnostic equipment is lost

• Outputs to injectors, relays or actuators are missing or intermittent

• Water ingress, heat damage or internal electronic failure is present

📦 Condition

• Genuine Volvo Penta part

• Brand new

• Supplied in original or equivalent packaging