In StockNew Alternator Replacement For 1970-1989 Mercruiser Marine 2.5L 3.0M GM 20104, 1100186, 1102938, 1102939, 1103113, 1103114, 1103193, 1105064, 1105065, 1105078, 1105088, 1105097, ADR0106, 40012089
For Allis ChalmersAlternator

Alternator 20104 for Allis Chalmers Model 898 77-82

OEM / REF: 20104SKU: pilotpart405383

New Alternator Replacement For 1970-1989 Mercruiser Marine 2.5L 3.0M GM 20104, 1100186, 1102938, 1102939, 1103113, 1103114, 1103193, 1105064, 1105065, 1105078, 1105088, 1105097, ADR0106, 40012089 is a Alternator replacement part indexed for Part Number and MERCRUISER Model 898 77-82, with 3 application records on fi...

Stock
In stock
Condition
New
Fitment
Allis Chalmers Engine Spare Parts
Category
Alternator
  • Fitment support before you order
  • Worldwide delivery options

Alternator Description

This Alternator is indexed for Part Number; MERCRUISER Model 898 77-82; MERCRUISER Model 460 TRS (Cyclone) 83-86; MERCRUISER Model 440 TRS (Cyclone) 83-86. Compare reference number 20104 against the label on your existing Allis Chalmers component before ordering.

Additional cross references on file: 1100186, 1102938, 1102939. If your machine plate shows a different number, submit a fitment inquiry with photos before checkout.

Applications

  • Part Number
  • MERCRUISER Model 898 77-82
  • MERCRUISER Model 460 TRS (Cyclone) 83-86
  • MERCRUISER Model 440 TRS (Cyclone) 83-86
  • MERCRUISER Model 400 TRS (Cyclone) 80-86
  • MERCRUISER Model 370 TRS 78-87
  • MERCRUISER Model 330 MIE 77-80
  • MERCRUISER Model 330 77-81
  • MERCRUISER Model 3.0 / 3.0LX 87-89
  • MERCRUISER Model 260 78-81
  • MERCRUISER Model 255 MIE 75-80
  • MERCRUISER Model 228 MIE 77-80
  • MERCRUISER Model 228 77-81
  • MERCRUISER Model 2.5L 87-89
  • MERCRUISER Model 198 MIE 77-77
  • MERCRUISER Model 165 70-82
  • MERCRUISER Model 140 73-86
  • MERCRUISER Model 120 73-89
  • ALLIS CHALMERS AC-S 70D 81-85
  • ALLIS CHALMERS AC-S 70 79-85
  • ALLIS CHALMERS AC-S 100D / 120D 79-81
  • ALLIS CHALMERS AC-S 100 / 120 79-81
  • ALLIS CHALMERS AC-P 60D / 70D / 80D 82-85
  • ALLIS CHALMERS AC-P 60 / 70 / 80 79-85
  • ALLIS CHALMERS AC-P 40D / 50D 81-85
  • ALLIS CHALMERS AC-P 40 / 50 78-85
  • ALLIS CHALMERS AC-P 20 / 25 / 30 81-85
  • ALLIS CHALMERS AC-P 165 / 185 / 225 81-85
  • ALLIS CHALMERS AC-P 150D 79-81
  • ALLIS CHALMERS AC-P 150 79-81
  • ALLIS CHALMERS AC-P 130D 79-81
  • ALLIS CHALMERS AC-P 130 79-81
  • ALLIS CHALMERS AC-P 110D 79-81
  • ALLIS CHALMERS AC-P 110 79-81
  • ALLIS CHALMERS AC-P 100D 79-85
  • ALLIS CHALMERS AC-P 100 82-85
  • ALLIS CHALMERS AC-C 60D / 70D / 80D / 100D / 120D 79-85
  • ALLIS CHALMERS AC-C 60C / 70C / 100C 79-81
  • ALLIS CHALMERS AC-C 60 / 70 / 80 / 100 / 120 79-85
  • ALLIS CHALMERS AC-C 35 / 40 / 45 / 50 / 55 79-86

Specifications

VOLTAGE12V
AMPERAGE61A
ROTATIONCW
PULLEY CLASSV1
Part NumberGM 20104, 1100186, 1102938, 1102939, 1103113, 1103114, 1103193, 1105064, 1105065, 1105078, 1105088, 1105097, ADR0106, 40012089

Fitment Notes

Brand or application signal
Allis Chalmers Engine Spare Parts
Product family
Alternator
System category
Engine Spare Parts > Engine Auxiliary Components > Alternator
Recommended verification
OEM number, engine model, serial number, old part photos, and dimensions.

Shipping & Returns

Availability
InStock
Shipping
Shipping quotes can be confirmed before payment for heavy or urgent orders.
Returns
Returns are easier when fitment is confirmed before ordering.
B2B support
Bulk, fleet, and repair-shop requests can be handled through the inquiry form.

Frequently Asked Questions

How do I confirm this part fits my machine?

Match the OEM or reference number first, then verify machine model, engine model, serial number, connector layout, mounting points, and old part photos.

Can I order if my part number is not listed?

Yes. Send the old part number, machine plate, and photos through the fitment inquiry form. Support can review possible replacements or alternatives.

Is this an OEM part?

Products are indexed as replacement parts unless explicitly marked otherwise. Always compare reference numbers and confirm fitment before purchase.

Confirm fitment

Send machine details before ordering high-risk parts.