Excavator Starter Motors

340-8308 0001107078 12V 9T PMGR Starter for Cat C1.1 301.5 301.8 303CR

Q: What numbers are documented for 340-8308?

Primary Cat Part Number: 340-8308. Same-number Formatting Variant: 3408308. Bosch Manufacturer Cross-Reference: 0001107078. Bosch Manufacturer Cross-Reference: 0001108181. Bosch Manufacturer Cross-Reference: 0-986-022-480. Same-number Formatting Variant: 0986022480. Related Cat Catalog Reference - Relationship Not Established: 319-7351. Relationship labels distinguish formatting aliases, direct interchanges, remanufactured references and related assemblies.

Q: How do I confirm 340-8308 before ordering?

Match the complete part number, compare the connector or mounting arrangement with the product photos, and confirm the machine or engine model and serial range. Send clear photos of the original unit when requesting a quote.

340-8308 0001107078 12V 9T PMGR Starter for Cat C1.1 301.5 301.8 303CR, OEM/reference 340-8308, Starter Motor, product view 1

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OEM / reference340-8308

SpecificationStarter Motor

Catalog ID77301784

Cat identifies 340-8308 as an electric starting motor and lists C1.1 engines plus 301.5, 301.6, 301.7CR, 301.8, 302CR, 302.7CR, 303CR, 303 SR and 304SR mini excavators. J&N's specialist electrical catalog links 340-8308 to Bosch 0001107078, 0001108181 and 0-986-022-480 and records 12 volts, 9 teeth, clockwise rotation and PMGR construction. Five selected owned photographs show the same starter from its mounting, drive and terminal sides. Confirm the primary number, voltage, tooth count, flange and terminal orientation before ordering.

Product Type: Electric Starter Motor
Voltage: 12 V
Pinion Teeth: 9
Rotation: Clockwise
Starter Design: Permanent Magnet Gear Reduction (PMGR)
Mounting: Two oblong unthreaded mounting holes
Condition: New replacement starter

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Send the machine model, engine model or nameplate photo so our team can confirm compatibility before shipment.

Part-number relationships

Relationship	Reference family	Number
Primary Cat Part Number	Official electric starting motor identity	340-8308
Same-number Formatting Variant	Search alias only	3408308
Bosch Manufacturer Cross-Reference	Specialist-catalog-supported reference	0001107078
Bosch Manufacturer Cross-Reference	Specialist-catalog-supported reference	0001108181
Bosch Manufacturer Cross-Reference	Specialist-catalog-supported reference	0-986-022-480
Same-number Formatting Variant	Search alias only	0986022480
Related Cat Catalog Reference - Relationship Not Established	Not presented as direct interchange	319-7351

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

340-8308

Manufacturer number

0001107078
0001108181
0-986-022-480

Formatting alias

3408308
0986022480

Related assembly

319-7351

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: 77301784
Photo views: 4

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

4 model references

Official Cat engine family: C1.1
Official Cat mini excavators: 301.5 / 301.6 / 301.7CR / 301.8 / 302CR / 302.7CR / 303CR / 303 SR / 304SR
Additional official Cat equipment: C1.1DE9.5 generator sets; CB1.7, CB1.8 and CB-14 compactors; 3003, 3011C and 3013C industrial engines
Fitment limitation: Confirm 340-8308, 12 V, 9-tooth pinion, flange geometry, terminal orientation and machine serial range before shipment

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 340-8308

Which machines use 340-8308?

Recorded compatible model references include Official Cat engine family: C1.1, Official Cat mini excavators: 301.5 / 301.6 / 301.7CR / 301.8 / 302CR / 302.7CR / 303CR / 303 SR / 304SR, Additional official Cat equipment: C1.1DE9.5 generator sets; CB1.7, CB1.8 and CB-14 compactors; 3003, 3011C and 3013C industrial engines, Fitment limitation: Confirm 340-8308, 12 V, 9-tooth pinion, flange geometry, terminal orientation and machine serial range before shipment. Confirm the complete part number and machine serial range before ordering.

What numbers are documented for 340-8308?

Manufacturer number: 0001107078, 0001108181, 0-986-022-480. Formatting aliases for the same number: 3408308, 0986022480. Related assembly numbers (not direct interchanges): 319-7351.

How do I confirm 340-8308 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.