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 Part Number
Cummins equipment number
4094998
Cross-reference (fitment check required)
Cummins equipment number
3631678
Cross-reference (fitment check required)
Cummins equipment number
3964745
Manufacturer Part Number
Prestolite manufacturer number
66021491
Manufacturer Part Number
Prestolite manufacturer number
66021544
Equipment Manufacturer Number
Perkins equipment number
OE52770
Equipment Manufacturer Number
Perkins equipment number
CV70291
Equipment Manufacturer Number
JCB equipment number
71434900
Cross-reference (fitment check required)
Arrowhead
PL66021626A
Cross-reference (fitment check required)
Cummins
3634778
Cross-reference (fitment check required)
Leece Neville
66021497
Cross-reference (fitment check required)
Leece Neville
66021497S
Cross-reference (fitment check required)
Leece Neville
66021616
Cross-reference (fitment check required)
Leece Neville
66021616A
Cross-reference (fitment check required)
Leece Neville
66021616CS
Cross-reference (fitment check required)
Leece Neville
66021616S
Cross-reference (fitment check required)
Leece Neville
66021626A
Cross-reference (fitment check required)
Leece Neville
66021638A
Cross-reference (fitment check required)
Leece Neville
859673S
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
4094998
Manufacturer number
66021491
66021544
OE52770
CV70291
71434900
Cross-reference (fitment check required)
3631678
3964745
PL66021626A
3634778
66021497
66021497S
66021616
66021616A
66021616CS
66021616S
66021626A
66021638A
859673S
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
Alternator
Category
Alternators
Catalog ID
50560331
Photo views
5
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
3 model references
Engine family: Selected Cummins K19, K38 and K50 engines
Engine family: Selected Cummins L10, N14, NH/NT855 and G5.9 engines
Cross-reference application: Selected Perkins-numbered installations using the same confirmed alternator family
Fitment / evidence notes
Fitment limitation: Confirm complete number, mounting, pulley, connector and engine serial range
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 4094998
Which machines use 4094998?
Recorded compatible model references include Engine family: Selected Cummins K19, K38 and K50 engines, Engine family: Selected Cummins L10, N14, NH/NT855 and G5.9 engines, Cross-reference application: Selected Perkins-numbered installations using the same confirmed alternator family. Recorded fitment/evidence notes: Fitment limitation: Confirm complete number, mounting, pulley, connector and engine serial range. Confirm the complete part number and machine serial range before ordering.
What numbers are documented for 4094998?
Cross-references are listed in the relationship table above. Compare specifications and the original unit before treating a reference as interchangeable. Manufacturer number: 66021491, 66021544, OE52770, CV70291, 71434900.
How do I confirm 4094998 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.
