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Excavator Starter Motors
24-volt direct-drive starter motor identified by John Deere number AR11138 and Delco number 1113148. Exact starter and service-component records support 7.5 kW, 10 teeth, clockwise rotation and three-hole mounting for John Deere 3010, 3020, 4010 and early 4020 diesel tractors. Serial limits apply to 3020 and 4020 applications.
Fitment status: Verified · Checked 2026-07-28Send the machine model, engine model or nameplate photo so our team can confirm compatibility before shipment.
| Relationship | Reference family | Number |
|---|---|---|
| Primary Equipment Part Number | John Deere starter assembly | AR11138 |
| Manufacturer Part Number | Delco starter number | 1113148 |
| Published Replacement Number | John Deere service reference | AR28053 |
| Published Replacement Number | John Deere service reference | AR40134 |
| Published Replacement Number | John Deere service reference | TY6703 |
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Product fitment guide
Quickly compare the reference number and recorded machine applications. Use the original photos and the checklist before ordering.
Part identification
Formatting aliases are the same number written differently. Related assemblies and remanufactured numbers are not presented as direct interchanges.
Product summary
Before ordering
Machine fitment
6 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
Recorded compatible model references include Machine: John Deere 3010 diesel tractor, Machine: John Deere 4010 diesel tractor, Machine / serial limitation: John Deere 3020 diesel through serial 122999, Machine / serial limitation: John Deere 4020 diesel through serial 200999, Machine family: John Deere 500 / 600, Fitment limitation: Confirm AR11138 or 1113148, 24V, 10-tooth pinion, serial range, flange and terminal layout. Confirm the complete part number and machine serial range before ordering.
Manufacturer number: 1113148.
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.
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