Mercedes Sprinter Turbocharger Coolant Line – OEM | VS30 2.0L OM654 Diesel | #654203680164 (2023+)

A cracked or leaking turbocharger coolant line on a VS30 Sprinter starves the turbo of the coolant flow it needs to manage heat — leading to accelerated bearing wear, oil coking inside the turbo, and eventually a turbo failure that costs far more than the line itself. This is the OEM turbocharger coolant line for VS30 Sprinters equipped with the 2.0L OM654 diesel engine, a direct replacement that restores proper coolant circulation through the turbocharger.

What This Part Does

The turbocharger coolant line routes engine coolant directly to the turbocharger housing, where it absorbs heat from the turbo's center section — particularly the bearing cartridge, which operates at extreme temperatures under boost. This coolant flow is critical not just during operation but especially after engine shutdown, when exhaust heat soaks into the turbo without airflow to carry it away. Without adequate coolant circulation, oil in the bearing housing overheats and cokes, forming carbon deposits that restrict lubrication passages and accelerate bearing wear. A damaged or blocked coolant line removes this thermal protection entirely and shortens turbo life dramatically.

Common Symptoms of a Failing Turbocharger Coolant Line

• Visible coolant leak in the turbocharger area or dried coolant residue on nearby components
• Unexplained coolant loss with no obvious external source
• Turbocharger noise, bearing wear, or reduced boost after periods of high-load operation
• Overheating or elevated coolant temperature warning, particularly after extended highway driving
• Oil coking or carbon deposits found in the turbo center section during inspection

When to Replace

Replace when the line shows cracking, weeping, or any sign of coolant seepage at the connection points. Also replace when performing a turbocharger replacement — a compromised coolant line on a new turbo will accelerate failure of the new unit.

VS30 OM654 Specific — VIN Verification Required

This coolant line 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+ Mercedes-Benz Sprinter 1500 – 2.0L OM654 Diesel (VS30)
• 2023+ Mercedes-Benz Sprinter 2500 – 2.0L OM654 Diesel (VS30)
• 2023+ Mercedes-Benz Sprinter 3500 – 2.0L OM654 Diesel (VS30)
• 2023+ Mercedes-Benz Sprinter 3500XD – 2.0L OM654 Diesel (VS30)

Part Numbers

• Mercedes OEM: 654203680164 / A6542036801 / 654-203-68-01
• Manufacturer: Genuine Mercedes-Benz
• SKU: 654203680164OE