21271237 Wiring Harness | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta D4 / D6 Engine-Side Wiring Harness - Part Number: 21271237

Genuine Volvo Penta engine wiring harness used on a serial-controlled D4 or D6 marine diesel electrical installation. It provides the factory connector branches, protective sleeving and circuit routing between the engine control system, sensors, actuators and power components.

⚙️ Key Features

• Genuine Volvo Penta engine-side harness

• Used in specified D4/D6 marine electrical systems

• OEM connector coding and branch lengths

• Marine abrasion and heat protection

• Match EVC generation, voltage and engine serial before ordering

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• 21271237 (current listed OEM reference)

OEM / Related Numbers:

• 21271237 - current OEM reference

Aftermarket / Verified Equivalents:

• No aftermarket equivalent

🚤 Compatibility

Commonly used on:

• Volvo Penta D4 and D6 common-rail marine-engine electrical systems

Typically suits:

• Engine models:

• D4 or D6 engine product number whose electrical schematic lists wiring harness 21271237

• Serial / Specification Control: Exact D4/D6 model, EVC generation, system voltage, connector revision and engine serial number must match.

• HP Range: D4/D6 rating dependent

• Engine Type: Volvo Penta D4 inline-four or D6 inline-six common-rail marine diesel

• Year Range: Harness and EVC revision controlled

🔌 Function

Carries power, ground and control signals between the ECU, engine sensors, actuators, charging circuit and starting system.

Common signs of failure:

• Intermittent operation or faults that change when the harness is moved

• Open-circuit, short-circuit or communication diagnostic codes

• Corroded, loose or heat-damaged terminals

• Chafed insulation, broken conductors or water entry

• Several related sensors or actuators failing together

📦 Condition

• Genuine Volvo Penta part

• Brand new

• Supplied in original or equivalent packaging