21776757 Wiring Harness | Genuine Volvo Penta Part

🔧 Product Description

Engine starting-system wiring harness for D13B-E MG (FE) installations. It provides the factory connector keying, conductor sizing and routing between the starter, relay, diode and engine electrical system.

🚤 Compatibility

• Engine Family: D, TAD

Full model list at the end of this description.

⚙️ Key Features

• OEM connector keying and pinout
• Correct conductor size and insulation
• Factory branch lengths and routing
• Sealed connectors where required
• EVC / voltage configuration controlled

🔌 Function

Distributes power, ground and control signals between the assigned electrical components.

⚠️ Common Signs of Failure

• Intermittent faults when the harness is moved
• Corroded, bent or backed-out terminals
• Damaged insulation or chafed conductors
• Water entry at connector seals

🛠️ Service Notes

• Compare the new harness with the old one before fitting — check the connector types, the number of pins and the branch lengths, and lay it out alongside the old loom to confirm every branch reaches its component
• Disconnect the batteries before unplugging or fitting a harness, and support the loom as you work so its weight never hangs on a connector or a bulkhead grommet
• Route it along the original path and secure it with the original clips and ties, clear of hot exhaust surfaces, sharp edges and anything that moves; leave a service loop at each connector rather than pulling a branch tight
• Push every connector home until the lock latches and protect the joints with a marine dielectric grease — an intermittent electrical fault is far more often a partly seated or salt-corroded pin than a broken wire
• Renewing the harness is the right repair where insulation is chafed, brittle or oil-soaked, or where corrosion has tracked inside the connector bodies; patch repairs in a damp engine bay tend to fail again, and any single conductor that is repaired should be joined with tinned marine cable of the same gauge, a proper crimp and adhesive-lined heat-shrink

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 21776757 → Supersedes 3587424 → Supersedes 881962

OEM / Related Numbers

• 3888621 earlier number superseded by this part
• 3587424 earlier number superseded by this part
• 881962 earlier number superseded by this part
• 3834466 - starter-motor references used in the system
• 21912470 - starter-motor references used in the system
• 22224078 - starter-motor references used in the system
• 22504359 - starter-motor references used in the system
• 873789 - diode
• 873962 - relay

📦 Condition

• Genuine Volvo Penta part
• Brand new
• Supplied in original or equivalent packaging

🔎 Full Model Compatibility

Typically suits:

• Volvo Penta D13B-E MG, D13B-E MG (FE), D13B-F MG, D13B-F MG (FE), D13C2-A MH, D13C2-A MG, D13C1-A MG
• Volvo Penta TAD1341VE, TAD1341GE
• Volvo Penta TAD1342VE, TAD1342GE
• Volvo Penta TAD1343VE, TAD1343GE
• Volvo Penta TAD1344VE, TAD1344GE
• Volvo Penta TAD1345GE, TAD1345VE
• Volvo Penta TAD1350GE, TAD1350VE
• Volvo Penta TAD1340VE
• Volvo Penta TAD1351GE
• Volvo Penta TAD1352GE
• Volvo Penta TAD1353GE
• Volvo Penta TAD1354GE
• Volvo Penta TAD1355GE
• Volvo Penta TAD1360-62VE
• Volvo Penta TAD1363-65VE