21475228 Spare Parts Kit | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta Alfdex Crankcase Ventilation Oil Separator Replacement Kit - Part Number: 21475228

A genuine Volvo crankcase-ventilation centrifugal oil-separator replacement kit used on Volvo Penta, Volvo, Mack and other heavy-duty engines equipped with the Alfdex closed-crankcase ventilation system. The complete separator removes oil mist from blow-by gases before the gases return to the intake or atmosphere.

Kit Contents:

• 1 × complete centrifugal crankcase oil-separator assembly - 21475228

• 1 × integrated separator / breather filter assembly - serviced with 21475228

• Mounting seal or gasket required by the installation - confirm against engine serial number

• Hoses and external mounting hardware are serviced separately unless specifically supplied

⚙️ Key Features

• Genuine Volvo complete crankcase oil-separator kit

• Correct Volvo part number 21475228

• Direct cross-reference to Alfdex and multiple Volvo / Mack service numbers

• Complete replacement assembly rather than a gasket-only kit

• Aftermarket heavy-duty equivalents are available

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• 21475228 current / later complete separator reference

• 21122541 earlier Volvo separator reference

• 21122539 earlier Volvo separator reference

• 21098264 earlier Volvo / Mack reference

• 20763721 → superseded within the separator family

• 20707295 → superseded within the separator family

• 20566628 → superseded within the separator family

• 20499419 earlier separator reference

OEM / Related Numbers:

• 21475228

• VOE21475228

• 21475226

• 21122541

• 21122539

• 21098264

• 20763721

• 20707295

• 20566628

• 20499419

• Volvo Penta 3588982

• Mack 3888808

• Alfdex 9009483

Aftermarket / Verified Equivalents:

• Dorman HD Solutions: 996-1001

• Alfdex: 9009483

• DT Spare Parts: 2.91315

• Sampa: 030.938

• Aftermarket heavy-duty reference: 05-240002

🚤 Compatibility

Commonly used on:

• Volvo Penta D11, D12, D13 and D16 closed-crankcase ventilation systems

• Volvo and Mack heavy-duty engines using the corresponding Alfdex separator

Typically suits:

• Engine models:

• Volvo Penta D11 marine and industrial engine families

• Volvo Penta D12 marine and industrial engine families

• Volvo Penta D13 marine and industrial engine families

• Volvo Penta D16 marine and industrial engine families

• Volvo / Mack D13 and MP8 engines, approximately 2007-2014 where 21475228 / 21122541 is specified

• Selected John Deere applications using RE537155, RE555331 or RE538740

• Selected Deutz applications using 04910336

• Engine Type: Heavy-duty diesel with closed crankcase ventilation

• Year Range: Approximately mid-2000s onward

• Serial Range: Engine and breather-housing serial-number controlled

🔌 Function

The centrifugal separator spins blow-by gases so oil droplets collect and drain back to the engine while cleaned gas leaves the breather. This reduces oil consumption, intake contamination and external emissions.

Common signs of failure:

• High crankcase pressure or oil leakage

• Excessive oil mist from the breather

• Oil collecting in charge-air pipes or intake components

• Whistling, restriction or breather fault codes

• Separator housing leakage or internal rotor failure

📦 Condition

• Genuine Volvo Penta part

• Brand new

• Supplied in original or equivalent packaging