Part-number relationships
| Relationship | Reference family | Number |
|---|---|---|
| Primary Part Number | Exact supplied catalog and source-folder identity | RE54091 |
Excavator Starter Motors
John Deere RE54091 Starter Motor for 4045
3 product photos · Swipe on mobile, or hover and select a thumbnail.
OEM / referenceRE54091
SpecificationStarter Motor
Catalog ID91000058
Exact-number John Deere catalog records identify RE54091 as a starter motor assembly. The supplied catalog contains 2 supporting application records. Recorded machine applications include 4039 and 4045 OEM Engines (ESN -699999). Recorded engine references include 4045. Compare the complete number, electrical rating, terminals, mounting and machine serial range with the original unit before ordering.
- Product Type
- Starter Motor
- Product Brand
- EexcavaStart
- Equipment Brand
- John Deere
- Condition
- New replacement part
Send the machine model, engine model or nameplate photo so our team can confirm compatibility before shipment.
Product fitment guide
Part numbers and compatible models
Quickly compare the reference number and recorded machine applications. Use the original photos and the checklist before ordering.
Part identification
Reference numbers
Primary number
Formatting aliases are the same number written differently. Related assemblies and remanufactured numbers are not presented as direct interchanges.
Product summary
Starter Motor
- Category
- Excavator Starter Motors
- Catalog ID
- 91000058
- Photo views
- 3
Before ordering
Confirm these details
- Confirm voltage and power rating against the original starter nameplate.
- Compare mounting-hole pattern, flange position and overall body orientation.
- Confirm pinion tooth count and rotation where those values are specified.
- Verify the engine model and machine serial range before ordering.
Machine fitment
Compatible model references
3 model references
Compatibility lists identify searchable model families, not every production serial range. Confirm the original part number and machine serial number before purchase.
Quick fitment answers
Common questions about RE54091
Which machines use RE54091?
Recorded compatible model references include Machine models: 4039 and 4045 OEM Engines (ESN -699999), Engine models: 4045, Fitment limitation: Confirm the exact part number, voltage/output or power rating, terminal layout, mounting and machine serial range before shipment. Confirm the complete part number and machine serial range before ordering.
What numbers are documented for RE54091?
No alternate number is listed for RE54091. Send the original nameplate for an alternate-number check.
How do I confirm RE54091 before ordering?
Confirm voltage and power rating against the original starter nameplate. Compare mounting-hole pattern, flange position and overall body orientation. Confirm pinion tooth count and rotation where those values are specified. Send clear photos of the original unit and connector layout when requesting a quote.