Mercedes Sprinter Catalytic Converter (DOC) – Genuine OEM | NCV3 3.0L OM642 BlueTec | #9064906181 (2010–2018)

A failed or clogged catalytic converter on a BlueTec Sprinter disrupts the first stage of the exhaust aftertreatment chain — causing exhaust backpressure, emissions fault codes, DPF regeneration failures, and eventually a limp mode that won't clear until the converter is replaced. This is the Genuine Mercedes-Benz OEM catalytic converter for NCV3 Sprinters equipped with the 3.0L OM642 BlueTec diesel engine, a direct replacement that restores proper oxidation catalyst function and exhaust aftertreatment performance.

What This Part Does

On the 2010–2018 BlueTec Sprinter, the diesel oxidation catalyst (DOC) is the first component in the exhaust aftertreatment system, positioned upstream of the diesel particulate filter (DPF) and SCR catalyst. The DOC uses a platinum and palladium-coated ceramic substrate to oxidize carbon monoxide (CO) and unburned hydrocarbons (HC) in the exhaust stream into carbon dioxide and water. It also raises exhaust gas temperature during active DPF regeneration by oxidizing additional diesel fuel injected into the exhaust post-combustion — providing the thermal energy needed to burn off accumulated soot in the DPF. When the DOC's catalyst substrate becomes contaminated by oil, coolant, excessive fuel fouling, or simple age-related depletion of its precious metal coating, it loses oxidation efficiency — causing regeneration failures, DPF loading, rising backpressure, and the cascade of fault codes that accompany a failing aftertreatment system.

Common Symptoms of a Failing Catalytic Converter

• Check engine light with catalytic converter efficiency or aftertreatment system fault codes
• DPF regeneration failures — the DPF loads with soot because the DOC can no longer provide adequate heat
• Increasing exhaust backpressure causing power loss under load
• Repeated soot accumulation in the DPF after cleaning or replacement
• Rattling from the converter body — a sign of internal substrate damage or fracturing

When to Replace

Replace when the converter is confirmed clogged, physically damaged, or no longer achieving adequate oxidation efficiency during aftertreatment system evaluation. Also replace when the DPF requires repeated forced regeneration or continues to load rapidly after cleaning — an inefficient DOC upstream is one of the most common causes of premature DPF failure. Always inspect and address the root cause of converter contamination (oil consumption, coolant leak, chronic misfires) before installing a replacement.

NCV3 OM642 BlueTec Specific — VIN Verification Required

This catalytic converter is for 2010–2018 NCV3 Sprinters with the 3.0L OM642 BlueTec diesel engine. It does not fit 2007–2009 NCV3 Sprinters with the earlier exhaust system, or VS30 Sprinters. Exhaust aftertreatment configurations vary by build date — always verify by VIN and existing part number before ordering. Contact us and we'll confirm fitment before you buy.

Fitment

• 2010–2018 Mercedes-Benz Sprinter 2500 – 3.0L OM642 BlueTec (NCV3/W906)
• 2010–2018 Mercedes-Benz Sprinter 3500 – 3.0L OM642 BlueTec (NCV3/W906)
• 2010–2018 Freightliner Sprinter 2500 / 3500 – 3.0L OM642 BlueTec (NCV3)

✔ BlueTec models only — 2010 and later
✔ Always address root cause of contamination before installing a replacement converter
✔ This part is VIN specific — always verify existing part number before ordering

Part Numbers

• Mercedes OEM: 9064906181 / A9064906181 / 906-490-61-81
• Manufacturer: Genuine Mercedes-Benz
• SKU: 9064906181OE