Alternators

EexcavaStart 10463003 12V 100A Alternator for Buick SKYLARK 2.5L L4

Q: What numbers are documented for 10463003?

Primary Manufacturer Reference: 10463003. Cross-reference (fitment check required): 321-282. Cross-reference (fitment check required): 321-283. Cross-reference (fitment check required): 321-302. Cross-reference (fitment check required): 321-303. Cross-reference (fitment check required): 334-2326. Cross-reference (fitment check required): 334-2328. Cross-reference (fitment check required): ADR0031. Cross-reference (fitment check required): 400-12431. Cross-reference (fitment check required): 112630. Cross-reference (fitment check required): 10463004. Cross-reference (fitment check required): 10497118. Relationship labels distinguish formatting aliases, direct interchanges, remanufactured references and related assemblies.

Q: How do I confirm 10463003 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 / reference10463003

Specification12V 100A Alternator; original-unit verification required

Catalog ID929290516

Product Type: Alternator
Product Brand: EexcavaStart
Primary Reference: 10463003
Equipment Scope: Buick SKYLARK; exact catalog-listed engine/year rows only
Voltage: 12 V
Rated Output: 100 A
Rotation: CW
Regulator: Internal
Pulley: 4 grooves; 52 mm outside diameter
Pulley Classification Code: 1253; arrangement and diameter require original-unit confirmation
Configuration Restriction: Buick Skylark 2.5L 1986-1987 rows only; CS130 configuration with regulator reference 411, 3:00 connector and 4-groove 52 mm pulley. Match original mounts and connector.
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	DELCO	10463003
Cross-reference (fitment check required)	AC DELCO	321-282
Cross-reference (fitment check required)	AC DELCO	321-283
Cross-reference (fitment check required)	AC DELCO	321-302
Cross-reference (fitment check required)	AC DELCO	321-303
Cross-reference (fitment check required)	AC DELCO	334-2326
Cross-reference (fitment check required)	AC DELCO	334-2328
Cross-reference (fitment check required)	ARROWHEAD	ADR0031
Cross-reference (fitment check required)	ARROWHEAD	400-12431
Cross-reference (fitment check required)	CARGO	112630
Cross-reference (fitment check required)	DELCO	10463004
Cross-reference (fitment check required)	DELCO	10497118
Cross-reference (fitment check required)	DELCO	10497119
Cross-reference (fitment check required)	DELCO	1101123
Cross-reference (fitment check required)	DELCO	1101124
Cross-reference (fitment check required)	DELCO	1105669
Cross-reference (fitment check required)	DELCO	1105670
Cross-reference (fitment check required)	DELPHI	RM1124
Cross-reference (fitment check required)	LESTER	7801-3
Cross-reference (fitment check required)	LESTER	7872-3
Cross-reference (fitment check required)	LESTER	7809-3
Cross-reference (fitment check required)	LESTER	7810
Cross-reference (fitment check required)	LESTER	7871-3
Cross-reference (fitment check required)	LESTER	7877-3
Cross-reference (fitment check required)	NSA	ALT-1330A
Cross-reference (fitment check required)	WAI	1-1630-11DR
Cross-reference (fitment check required)	WAI	1-1631-11DR
Cross-reference (fitment check required)	WAI	1-1660-11DR
Cross-reference (fitment check required)	WAI	1-1661-11DR

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

10463003

Cross-reference (fitment check required)

321-282
321-283
321-302
321-303
334-2326
334-2328
ADR0031
400-12431
112630
10463004
10497118
10497119
1101123
1101124
1105669
1105670
RM1124
7801-3
7872-3
7809-3
7810
7871-3
7877-3
ALT-1330A
1-1630-11DR
1-1631-11DR
1-1660-11DR
1-1661-11DR

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 100A Alternator; original-unit verification required

Category: Alternators
Catalog ID: 929290516
Illustration views: 1

Before ordering

Confirm these details

Confirm voltage and rated amperage against the original alternator label.
Compare mounting ears, pulley type and pulley-groove count.
Check plug shape, terminal position and regulator connection.
Verify the engine model and machine serial range before ordering.

Machine fitment

Compatible model references

2 model references

Buick SKYLARK 1986 / 151cu in 2.5L L4: Catalog-listed; verify original unit number, mounting, pulley and electrical connections; Buick Skylark 2.5L 1986-1987 rows only; CS130 configuration with regulator reference 411, 3:00 connector and 4-groove 52 mm pulley. Match original mounts and connector.
Buick SKYLARK 1987 / 151cu in 2.5L L4: Catalog-listed; verify original unit number, mounting, pulley and electrical connections; Buick Skylark 2.5L 1986-1987 rows only; CS130 configuration with regulator reference 411, 3:00 connector and 4-groove 52 mm pulley. Match original mounts and connector.

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 10463003

Which machines use 10463003?

Recorded compatible model references include Buick SKYLARK 1986 / 151cu in 2.5L L4: Catalog-listed; verify original unit number, mounting, pulley and electrical connections; Buick Skylark 2.5L 1986-1987 rows only; CS130 configuration with regulator reference 411, 3:00 connector and 4-groove 52 mm pulley. Match original mounts and connector., Buick SKYLARK 1987 / 151cu in 2.5L L4: Catalog-listed; verify original unit number, mounting, pulley and electrical connections; Buick Skylark 2.5L 1986-1987 rows only; CS130 configuration with regulator reference 411, 3:00 connector and 4-groove 52 mm pulley. Match original mounts and connector.. Confirm the complete part number and machine serial range before ordering.

What numbers are documented for 10463003?

Cross-references are listed in the relationship table above. Compare specifications and the original unit before treating a reference as interchangeable.

How do I confirm 10463003 before ordering?

Confirm voltage and rated amperage against the original alternator label. Compare mounting ears, pulley type and pulley-groove count. Check plug shape, terminal position and regulator connection. Send clear photos of the original unit and connector layout when requesting a quote.