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Thank you [ Home > Industrial Electrical Units > Delco Industrial Alternators > 21SI Series Alternators ]

21SI Series Alternators

Please Note - On Industrial Units, you must match OE numbers from your old unit to be sure of correct replacement.OE numbers are for reference only, units listed are aftermarket replacements.
OE units available upon request, call for a price quote.


		Delco OE# 1117880, 894, 906, 925, 931 & Others Alternator - Delco 21SI Series 115 Amp/12 Volt, 1-Wire System, Neg. Grd. Used On: Cummins, Detroit Diesel, Ford Truck, International-Navistar, Mack, Volvo White-GMC Replaces: Delco 1117880, 894, 906, 925, 931, 942, 947, 950, 951, 953, 954, 955, 956 19010155 Dimensions: 1/4-28 Batt. Term. Universal R-Term. 10-24 I-Term. Notes: With fan, without pulley 100% New Availability: Usually ships the next business day 7670NRegular price: $166.99Sale price:


		Delco OE# 1117885, 1117886, 1117887, 1117890 Alternator - Delco 21SI Series 115 Amp/12 Volt, 1-Wire System, Neg. Grd. Used On: Freightliner, Kenworth, Mack, Peterbilt, Volvo Truck, Western Star Replaces: Delco 1117885, 1117886, 1117887, 1117890, 1117892, 1117910, 1117923, 1117941 Dimensions: 5/16-18 Batt. Term. Universal R-Term. 10-24 I-Term. Notes: Universal R-terminal, 10-24 I-terminal. With fan, without pulley. 100% New Availability: Usually ships the next business day 7683NRegular price: $166.99Sale price:


		Delco OE# 1117895, 1117903, 1117927 Alternator - Delco 21SI Series 100 Amp/12 Volt, 3-Wire System, Neg. Grd. Used On: Chevrolet Kodiak, GMC Topkick 6.6L, 8.2L Replaces: Delco 1117895, 1117903, 1117927 Dimensions: 5/16-18 Batt. Term. Notes: 10-24 R-terminal located in I-term. hole. With fan, without pulley. 100% New Availability: Usually ships the next business day 7666NRegular price: $169.99Sale price:


		Delco OE# 1117896, 1117904, 1117928 Alternator - Delco 21SI Series 130 Amp/12 Volt, 3-Wire System, Neg. Grd. Used On: Chevrolet Truck B6, B7 Series, Kodiak; GMC Topkick 6.6L, 8.2L Replaces: Delco 1117896, 1117904, 1117928 Dimensions: 5/16-18 Batt. Term. Notes: 10-24 R-terminal located in I-term. hole. With fan, without pulley. 100% New Availability: Usually ships the next business day 7971NRegular price: $159.99Sale price:


		Delco OE# 1117897, 1117900, 19010111, 19010182 Alternator - Delco 21SI Series 70 Amp/24 Volt, 1-Wire System, Neg. Grd. Used On: Cummins, Timberjack w/ Cummins 5.9L, 8.3L Diesel Replaces: Delco 1117897, 1117900, 19010111, 19010182 Dimensions: M6 x 1.0 Batt. Term. Universal R-Term. M4 I-Term. Notes: With fan, without pulley 100% New Availability: Usually ships the next business day 8003NRegular price: $159.99Sale price:


		Delco OE# 1117905, 1117909, 1117937, 1117943 Alternator - Delco 21SI Series 130 Amp/12 Volt, 1-Wire System, Neg. Grd. Used On: AGCO AG, Caterpillar Tractor, Ford AG, Freightliner, John Deere, Kenworth, Mack, New Holland, Peterbilt, Volvo Truck, Western Star Replaces: Delco 1117905, 1117909, 1117937, 1117943, 1117965, 1117966, 19010147, 19010196 Dimensions: 5/16-18 Batt. Term. Universal R-Term. 10-24 I-Term. Notes: With fan, without pulley 100% New Availability: Usually ships the next business day 7681NRegular price: $129.99Sale price:


		Delco OE# 1117911, 914, 929, 932, 946 & Others Alternator - Delco 21SI Series 130 Amp/12 Volt, 1-Wire System, Neg. Grd. Used On: Ford Truck, International-Navistar Replaces: Delco 1117911, 914, 929, 932, 946, 949, 957, 958, 959, 962 Dimensions: 1/4-28 Batt. Term. Universal R-Term. 10-24 I-Term. Notes: With fan, without pulley 100% New Availability: Usually ships the next business day 8027NRegular price: $159.99Sale price:


		Delco OE# 1117915 Alternator - Delco 21SI Series 70 Amp/24 Volt, 1-Wire System, Neg. Grd. Used On: Fiatallis Equipment Replaces: Delco 1117915 Dimensions: 5/16-18 Batt. Term. 10-24 I-Term. Notes: With fan, without pulley 100% New Availability: Usually ships the next business day 8030NRegular price: $155.99Sale price:


		Delco OE# 1117916, 1117924, 1117933, 1117948 Alternator - Delco 21SI Series 145-160 Amp/12 Volt, 1-Wire System, Neg. Grd. Used On: Ford Truck, International-Navistar Replaces: Delco 1117916, 1117924, 1117933, 1117948, 1117952, 19010156 Dimensions: 1/4-28 Batt. Term. Universal R-Term. 10-24 I-Term. Notes: With fan, without pulley 100% New Availability: Usually ships the next business day 7644NRegular price: $159.99Sale price:


		Delco OE# 1117917, 1117919, 1117920, 1117921 Alternator - Delco 21SI Series 145-160 Amp/12 Volt, 1-Wire System, 14.0 Vset, Neg. Grd. Used On: Freightliner, Kenworth, Mack, Peterbilt, Volvo Truck Replaces: Delco 1117917, 1117919, 1117920, 1117921, 1117922, 1117934, 1117964, 19010202 Dimensions: 5/16-18 Batt. Term. Universal R-Term. 10-24 I-Term. Notes: With fan, without pulley 100% New Availability: Usually ships the next business day 7685NRegular price: $149.99Sale price:


		Delco OE# 19010101, 19010105, 19010181 Alternator - Delco 21SI Series 100 Amp/12 Volt, 1-Wire System, Neg. Grd. Used On: Freightliner, Kenworth, Volvo Trucks, Western Star Replaces: Delco 19010101, 19010105, 19010181 Dimensions: 5/16-18 Batt. Term. Universal R-Term. 10-24 I-Term. Notes: With fan, without pulley 100% New Availability: Usually ships the next business day 7662NRegular price: $169.99Sale price: