Compatibility tool

Part serial number fitment checker

Check a part number against a machine model and, when Deere publishes a structured serial range, test the serial number against that range.

Verified model fitment found

Verified model fitment found. No structured serial-number restriction is recorded for this fitment.

PartDZ123153 · Alternator - 90 A

MachineJohn Deere 5120M

Configuration90 A · 14 V

Fitment note5120M 90 A alternator option.

SourceJohn Deere 5120M Tractors North America Replacement Parts Guide

This tool only confirms rules already stored from cited sources. A missing fitment or missing serial rule is not proof that a part is incompatible. Always verify the complete machine PIN and configuration before ordering.