3886374 Waste Gate Actuator | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta wastegate actuator from the Inlet and Exhaust System group, weighing 0.99 kg and appearing on 5 applications across the D series in the cost records. It supersedes part number 3819648, which was catalogued earlier as a by-pass valve, so an engine documented with a by-pass valve at this position takes this actuator.

⚙️ Key Features

• 0.99 kg
• Supersedes 3819648, catalogued earlier as a by-pass valve
• 5 applications across the D series
• Inlet and Exhaust System group

🔌 Function

Senses boost pressure and opens the turbocharger wastegate to bleed exhaust past the turbine, capping maximum boost.

⚠️ Common Signs of Failure

• Overboost or underboost fault logged against the turbo
• Power down at high load, or an unexpectedly hard surge of boost
• Actuator rod seized, bent or with no free movement by hand
• Diaphragm leaking so the actuator will not hold vacuum or pressure
• Control hose to the actuator perished, split or off its spigot

🛠️ Service Notes

• Check the control hose and the wastegate linkage for free movement before condemning the actuator, as a seized gate gives the same fault
• Turbocharger 3886223 is listed as including its wastegate, so establish whether the actuator alone is the right repair
• Do not alter the actuator rod setting, as boost control is set by design and overboosting will damage the engine

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 3886374 → Supersedes 3819648

OEM / Related Numbers

• 3819648 earlier number superseded by this part

📦 Condition

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