Starter Motors

EexcavaStart S108-78 12V 0.8kW 9T Starter for POLARIS 400 398cc

Q: What numbers are documented for S108-78?

Primary Manufacturer Reference: S108-78. Search Format Alias: S10878. Cross-reference (fitment check required): 410-44111. Cross-reference (fitment check required): S108-78A. Cross-reference (fitment check required): 3083189. Cross-reference (fitment check required): 150-70501-10. Relationship labels distinguish formatting aliases, direct interchanges, remanufactured references and related assemblies.

Q: How do I confirm S108-78 before ordering?

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

EexcavaStart packaging illustration · Not a photograph of this exact part. Exact-unit photo availability is not confirmed; send your original part number and unit photos with your inquiry.

OEM / referenceS108-78

Specification12V 0.8kW 9T CW Starter; original-unit verification required

Catalog ID929291030

Product Type: Starter Motor
Product Brand: EexcavaStart
Primary Reference: S108-78
Equipment Scope: POLARIS 400; exact catalog-listed engine/year rows only
Voltage: 12 V
Rated Power: 0.8 kW
Pinion Teeth: 9
Rotation: CW
Configuration Restriction: Confirm the original Subaru/Fuji engine and starter identification; the listing does not certify every Polaris 400 configuration.
Availability: Quote only; stock not confirmed
Image Disclosure: Brand packaging illustration; exact-unit photograph not confirmed

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

Quotation details: MOQ, availability, lead time, item condition (new or remanufactured) and warranty coverage must be confirmed in your quotation before ordering.

Part-number relationships

Relationship	Reference family	Number
Primary Manufacturer Reference	HITACHI	S108-78
Search Format Alias	Formatting only	S10878
Cross-reference (fitment check required)	ARROWHEAD	410-44111
Cross-reference (fitment check required)	HITACHI	S108-78A
Cross-reference (fitment check required)	POLARIS	3083189
Cross-reference (fitment check required)	SUBARU ROBBINS	150-70501-10

Product fitment guide

Part numbers and compatible models

Quickly compare the reference number and recorded machine applications. Use photos of your original unit and the checklist before ordering.

Part identification

Reference numbers

Primary number

S108-78

Formatting alias

S10878

Cross-reference (fitment check required)

410-44111
S108-78A
3083189
150-70501-10

Formatting aliases are the same number written differently. Cross-references require a specification and fitment check; they do not by themselves confirm direct interchangeability. Related assemblies and remanufactured numbers are separate relationship types.

Product summary

12V 0.8kW 9T CW Starter; original-unit verification required

Category: Starter Motors
Catalog ID: 929291030
Illustration views: 1

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

POLARIS 400 1987 / 398cc: Catalog-listed; verify original unit number, pinion engagement, mounting and electrical connections; Confirm the original Subaru/Fuji engine and starter identification; the listing does not certify every Polaris 400 configuration.
POLARIS 400 1988 / 398cc: Catalog-listed; verify original unit number, pinion engagement, mounting and electrical connections; Confirm the original Subaru/Fuji engine and starter identification; the listing does not certify every Polaris 400 configuration.
POLARIS 400 1989 / 398cc: Catalog-listed; verify original unit number, pinion engagement, mounting and electrical connections; Confirm the original Subaru/Fuji engine and starter identification; the listing does not certify every Polaris 400 configuration.

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 S108-78

Which machines use S108-78?

Recorded compatible model references include POLARIS 400 1987 / 398cc: Catalog-listed; verify original unit number, pinion engagement, mounting and electrical connections; Confirm the original Subaru/Fuji engine and starter identification; the listing does not certify every Polaris 400 configuration., POLARIS 400 1988 / 398cc: Catalog-listed; verify original unit number, pinion engagement, mounting and electrical connections; Confirm the original Subaru/Fuji engine and starter identification; the listing does not certify every Polaris 400 configuration., POLARIS 400 1989 / 398cc: Catalog-listed; verify original unit number, pinion engagement, mounting and electrical connections; Confirm the original Subaru/Fuji engine and starter identification; the listing does not certify every Polaris 400 configuration.. Confirm the complete part number and machine serial range before ordering.

What numbers are documented for S108-78?

Cross-references are listed in the relationship table above. Compare specifications and the original unit before treating a reference as interchangeable. Formatting aliases for the same number: S10878.

How do I confirm S108-78 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.