OE 6421800165 — Oil Cooler for Mercedes-Benz

Every shipment of 6421800165 leaves with a packing list, photo documentation and a QC report. Warranty terms are agreed per contract and reference that inspection record; claims are settled in writing against the documentation.

For a short distance at reduced load, usually yes — but the risk compounds. A degraded oil cooler transfers stress to neighbouring components, so a small repair can grow into a full engine & fuel system rebuild. Book the replacement once the symptom is repeatable.

Match three things: the code on the part you are removing, the build-year range in the Applications table, and the mounting points visible in the reference photo. If all three line up, 6421800165 is a confirmed fit. Send your VIN and our export desk will double-check the ambiguous cases.

Standard minimum order is 10 pieces per part number. Mixed orders that combine 6421800165 with other engine & fuel system references are welcome — that is how most clients fill an LCL or FCL container without over-stocking a single line.

Yes, if the alternate shares the same engineering envelope. Shortlist candidates from the Related OE References table, then check bolt pattern, electrical pinout and material grade. A difference in any of those three means it is a different part, not a substitute.

OEM means the part was produced for the vehicle maker's assembly line; aftermarket means it is made independently to the same engineering drawing. For a oil cooler the practical gap is usually tooling age and packaging rather than fit, provided the tolerance class matches.