Mercedes Sprinter Left Cylinder Head Cover – OEM | NCV3 3.0L OM642 | #6420107167 (2007–2016)

A cracked, warped, or oil-fouled left cylinder head cover on a Sprinter OM642 leaves the left bank valve train exposed and creates oil leaks that track down the left side of the engine onto hot exhaust components below. This is the OEM left cylinder head cover for NCV3 Sprinters equipped with the 3.0L OM642 V6 diesel engine, a direct replacement that restores a proper sealed enclosure over the left bank camshafts and valve train.

What This Part Does

The left cylinder head cover — also called the left valve cover — is the plastic/aluminum housing that mounts to the top of the left cylinder head and encloses the left bank's DOHC camshafts, valve train, and the upper portion of the hydraulic lifters. It forms the sealed upper boundary of the left bank's oiling circuit, keeping pressurized oil inside the camshaft gallery and preventing external contamination from reaching the valve train. The OM642's cylinder head covers also provide mounting points for the crankcase ventilation system connections and wiring harness brackets. When the cover cracks, warps at its sealing flange, or has its bolt bosses damaged, it cannot maintain a seal against the cylinder head.

Common Symptoms of a Damaged Left Cylinder Head Cover

• Oil seeping or dripping from the left side of the engine at the cylinder head cover perimeter
• Burning oil smell from oil dripping onto the left exhaust manifold
• Visible cracking, warping, or physical damage to the cover body
• Oil accumulation on the left side of the engine block below the valve cover area

When to Replace

Replace when the cover is confirmed cracked, warped beyond sealing, or physically damaged. Always use a new cover gasket or specified RTV sealant to the OEM specification when reinstalling.

NCV3 OM642 Specific — VIN Verification Required

This left cylinder head cover is for NCV3 Sprinters equipped with the 3.0L OM642 V6 diesel engine. The OM642 is a V6 with separate left and right cylinder head covers — they are not interchangeable. Always verify your engine code and VIN before ordering. Contact us and we'll confirm fitment before you buy.

Fitment

• 2007–2016 Mercedes-Benz Sprinter 2500 – 3.0L OM642, left bank (NCV3/W906)
• 2007–2016 Mercedes-Benz Sprinter 3500 – 3.0L OM642, left bank (NCV3/W906)
• 2007–2009 Dodge Sprinter 2500 / 3500 – 3.0L OM642, left bank (NCV3)
• 2007–2016 Freightliner Sprinter 2500 / 3500 – 3.0L OM642, left bank (NCV3)

✔ Left (driver) bank only — right bank requires #6420103667
✔ Always use new gasket or specified RTV sealant when reinstalling

Part Numbers

• Mercedes OEM: 6420107167 / A6420107167 / 642-010-71-67
• SKU: 6420107167