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You are here: Home » Products » Rotating Electrical » Heavy Duty Starter Motors » Starter Motors by OE Brand » DENSO Replacement Starter Motors » 20R-4878 Caterpillar 2570C C7.1 24V 7.8kW Starter Motor Wholesale

20R-4878 Caterpillar 2570C C7.1 24V 7.8kW Starter Motor Wholesale

20R-4878 is a 24V 7.8kW 10T clockwise starter motor for Caterpillar 2570C forestry equipment and related C7.1 applications. It gives remote-equipment suppliers a recognized Cat identity, defined three-ear dimensions and a practical route for downtime-driven wholesale enquiries.
  • 20R-4878

  • 20R-4878 / 387-9639 / 438000-0100 / 438000-0101 / STN3165

  • Elecdura

  • Available for qualified orders

  • 20 pcs

  • 7 - 15 Days

  • Neutral packaging / private-label review

  • 18 Months

  • 20R-4878 / 387-9639 / 438000-0100 / 438000-0101 / STN3165

  • Caterpillar 2570C forestry equipment and related C7.1 applications requiring the stated 24V 7.8kW 10T CW starter

  • Confirm 24V, 7.8kW, 10T, CW, 3 × Ø13 mounting holes, Ø92 drive-end locating reference, 47 mm and 18 mm side references, mounting orientation and terminal layout against the removed starter before volume supply.

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20R-4878 Caterpillar 2570C Starter Motor for Forestry Dealers

A disabled forestry machine can make identification speed as important as price. Pair 20R-4878 with the 2570C model, C7.1 engine and machine serial details so the response can address the exact starter and the buyer's jobsite delivery window.

C7.1 is used across more than one equipment family. Confirm the 7.8kW rating, 10T module-3.175 pinion, three Ø13 holes, Ø146 face and cable orientation before dispatching a starter to a remote forestry operation.


 

20R-4878 24V 7.8kW Starter Motor Drawing for C7.1 Supply

The electrical and drive definition is 24V, 7.8kW, 10T, module 3.175 and clockwise rotation. This combined description should remain visible from the original enquiry through the branch transfer so urgency does not reduce the product to one Cat number.

Primary OE / Reference

20R-4878

Application

Caterpillar 2570C forestry equipment and related C7.1 applications requiring the stated 24V 7.8kW 10T CW starter

Voltage

24V

Rated Power

7.8kW

Pinion Teeth

10T

Pinion Module

3.175

Rotation

CW

OE / Cross Reference

20R-4878 / 387-9639 / 438000-0100 / 438000-0101 / STN3165

Mounting Face

3 × Ø13 mounting holes; Ø146 mounting-face reference

Drive-End References

Ø92 drive-end locating reference; 47 mm and 18 mm side references; triangular three-ear orientation shown in the drawing

20R-4878 Caterpillar 2570C 24V 7.8kW 10T starter dimensions

20R-4878 Caterpillar 2570C Starter Motor Dimensions for Fleet Buyers — compare the drawing with the removed starter before placing a volume order.

Check three Ø13 mounting holes, the Ø146 face, Ø92 locating reference and the 47 mm and 18 mm side dimensions. Photographs should be taken before the old starter leaves the machine, with the flange square and every terminal visible.


 

20R-4878 and 387-9639 Matching for Caterpillar Parts Buyers

Use 20R-4878 with 387-9639, 438000-0100, 438000-0101 and STN3165 as supporting numbers. Preserve the 2570C or other C7.1 equipment identity because the reference group alone does not describe the machine's service context.

Forestry dealers can divide inventory between emergency site support and planned maintenance. Machine-specific consumption, operating location and required delivery date should remain on the request even after several matched 20R-4878 units are combined into one purchase.


 

20R-4878 Starter Stock Planning for Remote Forestry Fleets

Receiving should count ten teeth, compare the three-ear face and inspect the pinion, housing and terminals for transit impact. For remote branches, include clear outer identification and inner supports strong enough to keep the high-output starter from moving inside the carton.

Elecdura's video shows starter assembly and electrical testing for export supply. Caterpillar forestry buyers can use it when evaluating production support, test requirements, rugged packing and replenishment schedules for 20R-4878 fleet coverage.


 

20R-4878 Starter Motor FAQs for B2B Buyers

What confirms 20R-4878 for a Caterpillar 2570C request?

Provide the 2570C model, machine serial, C7.1 engine information and the complete 20R-4878 or 387-9639 marking. Add square mounting and terminal-side photographs. The combination connects the Cat number to the forestry machine and gives purchasing enough detail to compare the 24V 7.8kW 10T starter before urgent dispatch.


 

How do 20R-4878 and 387-9639 relate for parts searching?

Treat 20R-4878 and 387-9639 as the primary Cat search pair, with 438000-0100, 438000-0101 and STN3165 as supporting references. Keep the 2570C or other C7.1 machine beside those numbers. Reference agreement speeds identification, while the high-output rating and three-ear match determine the actual forestry-service item. Keep the confirmed 20R-4878 comparison in the buyer's purchasing notes.


 

Which details matter most when a 2570C is down at a remote site?

Send the machine serial, location, required delivery date, old-starter numbers and clear photographs before discussing freight. Confirm 24V 7.8kW, 10T and the three-hole face. This lets Elecdura address both product identity and the operational deadline instead of offering a fast shipment based on an incomplete Cat number.


 

What mounting measurements define the 20R-4878 drive end?

Check three Ø13 holes around the Ø146 face, the Ø92 locating reference and the 47 mm and 18 mm side positions. Photograph the flange parallel to the camera before the old starter leaves the machine. The full view gives a remote branch a repeatable comparison if another 20R-4878 is needed later.


 

How should a 20R-4878 carton be prepared for a forestry jobsite?

Use shaped supports that hold the heavy body and drive housing, isolate the pinion and studs, and prevent rotation during rough transport. Place the machine or customer allocation and 20R-4878 on the outer label. Jobsite receiving can then identify the urgent unit without exposing it before installation.


 

What should a dealer inspect before shelving 20R-4878 units?

Sample more than one carton, count ten teeth, compare all three mounting ears and inspect the locating face, solenoid links and terminals for impact. Record the lot and sampled electrical result. These checks give forestry branches a consistent baseline before stock is transferred to distant service locations.


 

What field readings are useful after repeated C7.1 start failures?

Measure battery-bank voltage, positive and ground voltage drop under load, start-signal voltage and cranking speed, then inspect cable connections and grounds. Add the 2570C serial and installation history. The resulting information helps separate a truck-side electrical issue, harsh operating condition or starter concern before parts are returned.


 

What belongs in an urgent 20R-4878 wholesale enquiry?

Email the Caterpillar machine and serial, C7.1 details, all readable starter numbers, mounting, pinion and terminal photographs, quantity, jobsite destination and required arrival date. Elecdura can compare the 7.8kW three-ear starter and respond with product feedback, available price breaks, packing approach, lead time and practical freight options.


 

Request 20R-4878 Caterpillar Starter Motor B2B Pricing

Send the Caterpillar 2570C or C7.1 machine details, serial information, complete 20R-4878 or 387-9639 marking, mounting and terminal photographs, quantity, required date and destination to info@elecdurauto.com. Elecdura will review the configuration and provide wholesale pricing and delivery choices.


 

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