PART NUMBER GUIDE
Use OEM and aftermarket reference numbers as identification clues, then confirm the electrical and physical details before ordering.
What is a starter motor cross-reference?
A starter motor cross-reference connects two or more part numbers that may describe comparable units. The numbers can come from an equipment manufacturer, engine manufacturer, starter manufacturer, rebuilder or aftermarket catalogue. A cross-reference is useful for narrowing a search, but it is not an automatic fitment guarantee.
Production changes, regional specifications and superseded numbers can create differences within the same equipment family. Treat the number as the first checkpoint and compare the existing unit before ordering.
Record every readable number
Photograph the data plate and record the complete number, including prefixes, suffixes and separators. Avoid dropping a final letter or assuming two similar-looking digits are interchangeable. When a label is damaged, provide clear photos of the housing, mounting flange, pinion and terminals.
Compare the specification in a fixed order
- System voltage: normally 12V or 24V for the applications represented on this site.
- Rated power: compare the kW rating when it is available.
- Rotation and pinion: confirm rotation direction and tooth count from reliable information.
- Mounting: compare flange shape, hole count, spacing and nose length.
- Electrical connections: compare solenoid position, terminal type and cable clearance.
For worked examples, review the RE533976 starter reference and the Cummins 4BT/6BT starter reference.
Resolve conflicts before quotation
If the part number suggests one unit but the photos or specification suggest another, stop the selection process and request additional information. The equipment model, engine model and serial range may explain the difference. Never force a fitment conclusion from appearance alone.
Information to send for a B2B check
- Existing starter and OEM reference numbers.
- Equipment model, engine model and serial information when available.
- Voltage, power, rotation and tooth count.
- Photos of the label, full unit, mounting face, pinion and terminals.
- Required quantity and destination country or region.
Browse the starter motor capability page or send the identification details to EexcavaStart.
Quick answers
01 FAQDoes one matching part number confirm starter motor fitment?+
No. A matching number is strong identification evidence, but voltage, rotation, tooth count, mounting and terminal details should still be checked against the existing unit.
02 FAQWhat if the starter motor label cannot be read?+
Send the equipment and engine models plus clear photos of the full starter, mounting flange, pinion area and terminals. Measurements may be requested when the number is unavailable.
03 FAQWhy can the same equipment model use different starters?+
Production year, engine option, serial range and regional specification can change the starting system. The complete application details help separate these variants.
FITMENT SUPPORT
Need help identifying a part?
Send us your OEM number, equipment model, engine details or a clear photo of the existing part.