12Si Series Alternator



1983-1986 Delco Remy Type 12Si Series Internal Regulator, External Fan Alternator

The 12Si series alternator has the same outside dimensions as the 10Si series alternator (shown below) and will fit in it's place without modification. The 12Si series alternator has several design improvements over the 10Si series that make it the better choice between the two.

Improvements include:
  • Larger Rectifier to handle higher amperage
  • Wider Stator and Rotor:
    • Improved Magnetism for better Low End Output
    • Increased Mass for better Heat Dissipation
  • Larger Cooling Holes at back for better cooling of Rectifier, Stator and Other Internal Components
  • High Volume Axial Turbo Fan for Greater Air Flow through the alternator
12si series alternator
Available in several amperage levels both standard hookup and self exciting (one wire) voltage regulators.


Displaying products 1 - 9 of 9 results
Part # D112Si94MSE - 12Si 94M Amp Marine type 12Si Series SE (One Wire) Alternator
Price: $139.95
Part #  D112Si94MSE  - 12Si 94M Amp Marine type 12Si Series SE (One Wire) Alternator
Delco Remy type 12Si series 94 amp single bridge rectifier alternator, with self exciting (one wire) voltage regulator.
Part # 7294M 94 Amp 12Si Series Alternator
Price: $109.95
Part # 7294M 94 Amp 12Si Series Alternator
7294M 94 Amp 12Si Series Alternator 94 Amp/12 Volt, CW, 3-Wire System. Lester Nos: 7272, 7272-3, 7273, 7273-3, 7294, 7294-3
Part # D17273MA105 105 Amp 12Si Series Standard Voltage Regulator Alternator
Price: $109.95
Part # D17273MA105      105 Amp 12Si Series Standard Voltage Regulator Alternator
105 Amp Delco Remy type 12Si series alternator with standard, internal voltage regulator.
Part # D17273MA140 - Delco Remy type 140 Amp 12Si High Output Alternator with Standard Hook up Voltage Regulator Alternator
Price: $149.95
Part # D17273MA140  -  Delco Remy type 140 Amp 12Si High Output  Alternator with Standard Hook up Voltage Regulator Alternator
Part # D17273MA140 - Delco Remy type 140 Amp 12Si High Output Alternator with Standard Hook up Voltage Regulator Alternator
7273M A170 Amp 12Si Series Standard Voltage Regulator Alternator
Price: See CS144-A170
7273M A170 Amp 12Si Series Standard Voltage Regulator Alternator
170 Amp Delco Remy type 12Si series alternator with standard, internal voltage regulator.
7273M SE105 Amp 12Si Series Self Exciting (One-Wire) Alternator
Price: $129.95
7273M SE105 Amp 12Si Series Self Exciting (One-Wire) Alternator
105 Amp Delco Remy type 12Si series alternator with self exciting, internal voltage regulator.
Part # 7273M-A105 Delco Type 12Si Series, Standard Voltage Regulator, 105 Amp Alternator
Price: $109.95
Part # 7273M-A105 Delco Type 12Si Series, Standard Voltage Regulator, 105 Amp Alternator
7273M-A105 Delco Type 12Si Series, Standard Voltage Regulator, 105 Amp Alternator
7273M SE140 Amp 12Si Series Self Exciting (One-Wire) Alternator
Price: $169.95
7273M SE140 Amp 12Si Series Self Exciting (One-Wire) Alternator
140 Amp Delco Remy type 12Si series alternator with self exciting, internal voltage regulator.
7273M SE170 Amp 12Si Series Self Exciting (One-Wire) Alternator
Price: See part # CS144-A170SE
7273M SE170 Amp 12Si Series Self Exciting (One-Wire) Alternator
170 Amp Delco Remy type 12Si series alternator with self exciting, internal voltage regulator.

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