Heavy Duty Alternator

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Equivalent Replacement Parts for AC DELCO Part Number 321-737

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Part Number	Description	Brochure (English)	Brochure (Spanish)
10459186 10459186 21SI Reman Alternator Status: Obsolete Type: Reman Voltage: 12 Rated Output: 145 Amps Mount Type: J180 Hinge B+ Output: 5/16 R Terminal: PIN Remote Sense: No Polarity: Negative	21SI Reman Alternator
10459187 10459187 21SI Reman Alternator Status: Obsolete Type: Reman Voltage: 12 Rated Output: 145 Amps Mount Type: J180 Hinge B+ Output: 5/16 R Terminal: PIN Remote Sense: No Polarity: Negative	21SI Reman Alternator
19010180 19010180 21SI New Alternator Status: Private Brand Type: New Voltage: 12 Rated Output: 145 Amps Mount Type: J180 Hinge B+ Output: 5/16 R Terminal: PIN Remote Sense: No Polarity: Negative	21SI New Alternator
19010180 19010180 21SI New Alternator Status: Private Brand Type: New Voltage: 12 Rated Output: 145 Amps Mount Type: J180 Hinge B+ Output: 5/16 R Terminal: PIN Remote Sense: No Polarity: Negative	21SI New Alternator
10459187 10459187 21SI Reman Alternator Status: Obsolete Type: Reman Voltage: 12 Rated Output: 145 Amps Mount Type: J180 Hinge B+ Output: 5/16 R Terminal: PIN Remote Sense: No Polarity: Negative	21SI Reman Alternator
10459186 10459186 21SI Reman Alternator Status: Obsolete Type: Reman Voltage: 12 Rated Output: 145 Amps Mount Type: J180 Hinge B+ Output: 5/16 R Terminal: PIN Remote Sense: No Polarity: Negative	21SI Reman Alternator
10459186 10459186 21SI Reman Alternator Status: Obsolete Type: Reman Voltage: 12 Rated Output: 145 Amps Mount Type: J180 Hinge B+ Output: 5/16 R Terminal: PIN I Terminal: NULL Remote Sense: No Polarity: Negative	21SI Reman Alternator
10459187 10459187 21SI Reman Alternator Status: Obsolete Type: Reman Voltage: 12 Rated Output: 145 Amps Mount Type: J180 Hinge B+ Output: 5/16 R Terminal: PIN I Terminal: NULL Remote Sense: No Polarity: Negative	21SI Reman Alternator
19010180 19010180 21SI New Alternator Status: Private Brand Type: New Voltage: 12 Rated Output: 145 Amps Mount Type: J180 Hinge B+ Output: 5/16 R Terminal: PIN I Terminal: NULL Remote Sense: No Polarity: Negative	21SI New Alternator

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Part Number	Description	Amps	Feature	Brochure (English)	Brochure (Spanish)	Notes
19020310 19020310 22SI New Alternator Status: Active Type: New Voltage: 12 Rated Output: 150 Amps Mount Type: J180 Hinge B+ Output: 1/4 R Terminal: #10 I Terminal: #10 Remote Sense: No Polarity: Negative	22SI New Alternator	150
8600310 8600310 24SI New Alternator Status: Active Type: New Voltage: 12 Rated Output: 160 Amps Mount Type: J180 Hinge B+ Output: 5/16 R Terminal: #10 I Terminal: #10 Remote Sense: No Polarity: Negative	24SI New Alternator	160		Download PDF	Download PDF	Dual Internal Fans / Tech Tip Video Dual Internal Fan Alternators When replacing an external fan alternator with an internal fan alternator DO NOT take the external fan from the original model and apply to the internal fan alternator. This will result in pulley and belt misalignment. Tech Tip Video: Dual Internal Fans
8600312 8600312 28SI New Alternator Status: Active Type: New Voltage: 12 Rated Output: 160 Amps Mount Type: J180 Short Hinge B+ Output: 5/16 R Terminal: #10 I Terminal: #10 Remote Sense: Yes Polarity: Negative	28SI New Alternator	160	High Output	Download PDF	Download PDF	Dual Internal Fans / Tech Tip Video Dual Internal Fan Alternators When replacing an external fan alternator with an internal fan alternator DO NOT take the external fan from the original model and apply to the internal fan alternator. This will result in pulley and belt misalignment. Tech Tip Video: Dual Internal Fans