21571778 Catalytic Converter | Genuine Volvo Penta Part

🔧 Product Description

Catalytic converter for later Volvo Penta 6.0L and 6.2L V8 marine petrol engines. The converter is integrated into the freshwater-cooled catalyst exhaust system and is monitored by the engine management system through oxygen sensors.

🚤 Compatibility

Typically suits:

• Volvo Penta V8-380-CE-A
• Volvo Penta V8-380-C-B
• Volvo Penta V8-380-CE-B
• Volvo Penta V8-380-C-D
• Volvo Penta V8-380-CE-D
• Volvo Penta V8-430-CE-D
• Volvo Penta V8-350-C-D
• Volvo Penta V8-350-CE-D
• Volvo Penta V8-380-C-A

• Engine Family: V
• HP Range: 350-430 HP

⚙️ Key Features

• Exact official fitment to V8-380 catalyst variants
• Also catalogued on V8-350-C-D and V8-430-CE-D systems
• Factory catalyst coating and flow capacity
• Side/revision-specific housing
• Works with Volvo Penta catalyst diagnostics
• Engine type: Freshwater-cooled V8 marine petrol engine
• 2 used per assembly

🔌 Function

Treats regulated exhaust emissions while allowing the ECU to monitor catalyst efficiency.

⚠️ Common Signs of Failure

• Catalyst-efficiency fault code
• Rattle from a fractured substrate
• Restricted exhaust flow and loss of power
• Excessive housing temperature
• Persistent oxygen-sensor or rich-mixture faults

🛠️ Service Notes

• Handle it carefully and never drop or knock it; the element inside is brittle and can break up with no external damage to show for it
• Establish why the old one failed before fitting a new one — oil, coolant or unburnt fuel reaching the exhaust will poison a converter quickly, so engine faults get fixed first
• Renew the gaskets, sealing rings and fasteners at both joints and check the whole run for leaks; air drawn in at a leaking joint upsets both the converter and the sensors reading through it
• Refit all mountings and brackets so the converter is properly carried and its joints are not taking the strain of the pipework
• Use only the fuel and lubricant specifications the manual for your engine calls for, and after fitting run up and check for exhaust leaks and for stored fault codes

🔄 Supersession & Cross Reference

Other-Brand OEM Numbers

• VOE21571778

Aftermarket / Verified Equivalents

• Paired/related catalyst: 21321980
• Earlier related catalyst references: 3889994 and 3889995

📦 Condition

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