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          602-20030 New Small Frame Alternator, 20030 (New 12V, 78-AMP). Fits older OMC 
engines using ALK Prestolite Alternators 
  Fits older OMC engines using ALK Prestolite Alternators Rplc. Prestolite #'s ALK-6207, 6210, 6222, 6223 & 5206 Rplc. OMC #'s 381166, 381519, 383443, 384233, 981186, 981187 & 985964 Internally Regulated 1-Wire Hook-Up w/ Neg. Ground Ignition protected Replacement Voltage Regulator For Original Prestolite Alternator use # 
  VR339These units will not fit on OMC 800 1978-1982 View API Alternator CatalogOEM to API 
Part Number Cross Reference
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          602-20093 Small Frame Alternator, 55 Amp 12v (Volt) 
  (New 12V, 55-AMP) Fits Mercruiser & Volvo Serpentine Pulley Rplc. Merc # 807652T Rplc. Volvo # 3857813 55 AMP, 3-Wire Hook-Up Tachometer Lead Neg. Ground Ignition protected Red Wire is for Sensor Purple Wire is for Excitation Use Replacement Voltage Regulator # VR-54 View API Alternator CatalogOEM to API 
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          602-20053 Small Frame Alternator, 78 Amp 12v (Volt) 
  (New 12V, 78-AMP) Fits Mercury, OMC, Volvo & others Can replace Mando & Motorola Replaces Merc #'s 78477, 78403A 2 Delco Style, 10SI, Ignition Protected 3-Wire Hook-Up w/ Neg. Ground Red Wire is for Sensor Black Wire is for Excitation 20053 can be interchanged with 20054 View API Alternator CatalogOEM to API 
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          602-20037 Small Frame Alternator, 78 Amp, 12v (Volt), 20037. Fits Acadia, Crusader, 
Lathrop, OMC, Owens, Starrett, Universal and Chrysler 
  Replaces: Prestolite #'s ALK 5201, 5202, 5203, 5204, ALF 5201, ANE 5201, 5202
 Universal # 275753
 Chrysler #'s 3527501, 3527502
 OMC # 379761
Internally Regulated 1-Wire Hook-Up w/ Neg. Ground Ignition Protected Replacement Voltage Regulator For original Prestolite Alternator use # 
  VR726 View API Alternator CatalogOEM to API 
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          602-20096 Small Frame Alternator, Caterpillar, 90 Amp, 12v (Volt) 
  (New 12V, 90-AMP) Fits CAT 3208 & many Marine Applications Self Exciting Alternator Heavy Duty Bearings Insulated Ground, 90 AMP Ignition protected Rplc. CAT # 6T1396 Rplc. Motorola # 8MR2070TA Use Replacement Voltage Regulator # VR-3028 View API Alternator CatalogOEM to API 
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          602-20044 Small Frame Alternator, Diesel Only, 20044 78 Amp 12v (Volt) 
  (New 12V, 78-AMP) 10-SI Style Alternator 2" Mounting Foot 1-Wire Hook-Up w/ Tachometer Terminal for Marine Diesel Engines For Diesel Engine Applications Only, NOT ignition protected, NOT SAE J1171 
compliant, NOT for gasoline engine use.  (SAE J1171 compliance specifically 
deals with external ignition protection of marine electrical devices in gasoline 
powered marine engines.) View API Alternator CatalogOEM to API 
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          602-20044-3W Small Frame Alternator, Diesel Only, 20044 78 Amp 12v (Volt) 
  (New 12V, 78-AMP) 10-SI Style Alternator 2" Mounting Foot 3 wire hook-up for faster cut in. 2" pulley w/.5" belt, fits older Perkins 
  4 & 6 cyl. For Diesel Engine Applications Only, NOT ignition protected, NOT SAE J1171 
compliant, NOT for gasoline engine use.  (SAE J1171 compliance specifically 
deals with external ignition protection of marine electrical devices in gasoline 
powered marine engines.) View API Alternator CatalogOEM to API 
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          602-20109 Small Frame Alternator, Diesel Only, 120 Amp 12v (Volt) 
  (New 12V, 120-AMP) Fits Yanmar & Perkins For use on diesel engines Rplc. API Alternator # ALT-107 Rplc. Perkins # NA005129 Rplc. Yanmar # 129772-77200 Supplied with Tachometer & Excitation terminals  For Diesel Engine Applications Only, NOT ignition protected, NOT SAE J1171 
compliant, NOT for gasoline engine use.  (SAE J1171 compliance specifically 
deals with external ignition protection of marine electrical devices in gasoline 
powered marine engines.)
 View API Alternator CatalogOEM to API 
Part Number Cross Reference
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