Mercedes Sprinter Crankshaft Thrust Washer Set – Kolbenschmidt | NCV3 3.0L OM642 | #6420300062 (2007–2022)

Excessive crankshaft end play on a Sprinter OM642 — caused by worn or missing thrust washers — allows the crankshaft to walk axially in the block, generating a rhythmic thud under load changes, accelerating thrust bearing wear, and in severe cases contacting the block and causing catastrophic internal damage. This is the Kolbenschmidt crankshaft thrust washer set for NCV3 and VS30 Sprinters equipped with the 3.0L OM642 V6, a direct replacement that restores correct axial crankshaft end play.

What This Part Does

The crankshaft thrust washers — also called thrust bearings or half-moon thrust shims — are semi-circular flat bearing elements installed in grooves in the engine block at the thrust main bearing position. They contact the crankshaft's thrust flanges and limit the crankshaft's axial movement to within the specified end play range. On the OM642, the thrust washers work in conjunction with the main bearing shells at the thrust journal to handle both radial and axial loads. When the thrust faces wear from high mileage, clutch slip, or torque converter pressure, axial end play increases beyond specification — causing the characteristic thud on gear engagement and accelerating wear on the flywheel, torque converter, and associated drivetrain components.

Common Symptoms of Worn Thrust Washers

• Rhythmic thud or knock when engaging a gear or during clutch engagement
• Crankshaft end play measured beyond factory specification during inspection
• Unusual wear on the flywheel face or torque converter contact surface
• Thrust bearing debris found in the oil during engine teardown

When to Use

Use whenever crankshaft end play is found out of specification, or as a standard replacement item during any OM642 bottom-end rebuild. Always measure end play after installation with a dial indicator — the thrust washers come in various thickness grades and the correct grade must be selected to achieve the specified end play range.

NCV3 & VS30 OM642 Specific — Engine Verification Required

This thrust washer set is for NCV3 and VS30 Sprinters equipped with the 3.0L OM642 V6 diesel engine. Always verify your engine code before ordering.

Fitment

• 2007–2018 Mercedes-Benz / Dodge / Freightliner Sprinter 2500 / 3500 – 3.0L OM642 (NCV3)
• 2019–2022 Mercedes-Benz Sprinter 2500 / 3500 – 3.0L OM642 (VS30)

✔ Always measure crankshaft end play with a dial indicator after installation
✔ Select correct thickness grade to achieve specified end play range
✔ Replace as standard procedure during any OM642 bottom-end rebuild

Part Numbers

• Mercedes OEM: 6420300062 / A6420300062 / 642-030-00-62
• Manufacturer: Kolbenschmidt
• SKU: 6420300062