Mercedes Sprinter Engine Oil Cooler – Nissens | VS30 2.0L OM654 Diesel | #6541800265 (2023–2024)

A leaking or internally blocked engine oil cooler on a VS30 Sprinter is one of the most damaging failures in the cooling system — it either contaminates the oil with coolant, contaminates the coolant with oil, or simply stops cooling the oil entirely, pushing lubrication temperatures past the point where the oil film can protect bearings, camshaft lobes, and the turbocharger. This is the Nissens engine oil cooler for VS30 Sprinters equipped with the 2.0L OM654 diesel engine, a direct replacement that restores proper oil temperature regulation and system integrity.

What This Part Does

The engine oil cooler is a compact heat exchanger that routes engine oil through a matrix of passages surrounded by engine coolant. As oil circulates through the cooler, heat transfers from the oil to the cooler coolant, keeping oil temperature within its operating range regardless of ambient temperature or engine load. On the OM654, the oil cooler is integrated into the engine's oil filter housing assembly — meaning it also serves as the interface between the oil circuit and the coolant circuit at one of the most thermally stressed points in the engine. When the cooler's internal passages corrode, crack, or develop a seal failure, oil and coolant mix — creating a milky contamination in the oil or a greasy film in the coolant reservoir that signals an internal failure requiring immediate attention.

Common Symptoms of a Failing Engine Oil Cooler

• Milky or creamy appearance of engine oil on the dipstick or oil filler cap — a sign of coolant contamination
• Oily film, bubbles, or discoloration in the coolant reservoir — a sign of oil contamination
• Unexplained coolant loss or repeated low coolant warnings with no external leak
• Engine oil temperature running higher than normal, particularly under sustained load
• Oil cooler housing weeping coolant or oil externally at the cooler seals or housing joints

When to Replace

Replace immediately when oil-coolant mixing is confirmed — continued operation with contaminated oil destroys bearings and can cause catastrophic engine failure. Also replace when the cooler shows external leakage at its sealing surfaces, or when oil cooler housing seals are being renewed and the core itself shows corrosion or internal restriction. When replacing the oil cooler, always flush both the oil and coolant circuits, replace the oil filter, and renew all cooler seals and o-rings.

VS30 OM654 Specific — VIN Verification Required

This engine oil cooler is for VS30 Sprinters equipped with the 2.0L OM654 diesel engine. It is not compatible with VS30 models equipped with the 3.0L OM642 or NCV3 Sprinters equipped with the 2.1L OM651. Always verify your engine code and VIN before ordering. Contact us and we'll confirm fitment before you buy.

Fitment

• 2023–2024 Mercedes-Benz Sprinter 2500 – 2.0L OM654 Diesel (VS30)
• 2023–2024 Mercedes-Benz Sprinter 3500 – 2.0L OM654 Diesel (VS30)
• 2023–2024 Mercedes-Benz Sprinter 3500XD – 2.0L OM654 Diesel (VS30)

Part Numbers

• Mercedes OEM: 6541800265 / A6541800265 / 654-180-02-65
• Manufacturer: Nissens — 91472
• SKU: 6541800265