It is a 145 amp unit (option code KG3) and features a 2-wire connector.
Condition: Excellent (A)
Mileage: 191,000 miles
It is rated for 125 amps. This part fits vehicles with option code KG7 or K76.
Condition: Excellent (A)
Mileage: 101,100 miles
It is a 220 amp unit (option code KW5).
Condition: Excellent (A)
Mileage: 169,900 miles
It is a 220 amp alternator for vehicles with option code KW5.
Condition: Good (B)
Mileage: 174,000 miles
Condition: Excellent (A)
Mileage: 16,000 miles
For vehicles equipped with a 220 amp alternator.
Condition: Good (B)
Mileage: 79,000 miles
It is a 125 amp alternator for vehicles with the 6.6L engine and 6-speed Allison automatic transmission. It fits vehicles with option code KG7 or K76.
Condition: Good (B)
Mileage: 170,000 miles
It is a 105 amp alternator for vehicles with the 6.0L engine. It also fits vehicles with the 105 amp option (option code K68).
Condition: Excellent (A)
Mileage: 160,000 miles
It is for vehicles with a 160 amp system (option code KW1).
Condition: Excellent (A)
Mileage: 127,600 miles
It is a 150 amp alternator for vehicles with the 6.6L engine. It fits vehicles with option code KG4 or option code KHB (dual alternators, 150 and 220 amp).
Condition: Excellent (A)
Mileage: 64,000 miles
GM Original Equipment; 2015 1/2 MODEL YEAR BREAK POINT (AVF), 220 AMP GENERATOR (KW5)
It is a 150 amp unit (option code KG4).
Condition: Excellent (A)
Mileage: 120,700 miles
For vehicles with the 6.2L engine. This alternator is rated at 170 amps (option code KW7). Please verify your part identification number matches.
Condition: Excellent (A)
Mileage: 15,000 miles
It is a 145-amp unit (option code KG3). This part fits vehicles with a gasoline engine, a dual generator setup (option code KD9), or the Special Equipment Option (option code 8C6).
Condition: Good (B)
Mileage: 174,000 miles
Built for vehicles with the 6.0L engine and a 150 amp alternator (option code KG4).
Condition: Excellent (A)
Mileage: 244,200 miles
It is a 220 amp unit.
Condition: Good (B)
Mileage: 126,000 miles
It is a 145 amp unit (option code KG3). This part is for vehicles without a dual generator.
Condition: Excellent (A)
Mileage: 149,000 miles
It is a 150 amp alternator (option code KG4) for vehicles with the 6.0L engine.
Condition: Excellent (A)
Mileage: 121,000 miles
It is a 145 amp alternator.
Condition: Excellent (A)
Mileage: 141,700 miles
It is for vehicles with a 220 amp system (option code KW5 or option code KHB). This fits vehicles with dual alternators (150 and 220 amp).
Condition: Excellent (A)
Mileage: 138,200 miles
It is a 150 amp alternator for vehicles with the 6.6L engine. Fits vehicles with option code KG4 or option code KHB (dual alternators, 150 and 220 amp).
Condition: Good (B)
Mileage: 167,000 miles
It is a 150 amp alternator (option code KG4).
Condition: Good (B)
Mileage: 102,000 miles
Condition: Good (B)
Mileage: 153,000 miles
It is a 170-amp alternator for vehicles with option code KW7.
Condition: Good (B)
Mileage: 128,000 miles
It is an auxiliary unit with a 170-amp output.
Condition: Excellent (A)
Mileage: 52,000 miles
Delco Unit Std DR44 Type 145 Amps
Delco Unit Std DR44 Type 145 Amps
w/2 pin plug, w/ 57mm diameter pulley, w/3:00 plug
Delco Unit Std DR44 Type 145 Amps
Delco Unit Opt 160 Amps Superseded
It is for vehicles with a 220 amp system (option code KW5 or option code KHB).
Condition: Good (B)
Mileage: 132,000 miles
This alternator is for vehicles with a 220 amp charging system and is compatible with 4.3L or 6.6L engines.
Condition: Excellent (A)
Mileage: 49,000 miles
It is a 220 amp alternator. This part fits vehicles with option code KW5 or option code KHB (dual alternators, 150 and 220 amp).
Condition: Excellent (A)
Mileage: 99,000 miles
160 Amp.
It is a 170 amp unit.
Condition: Good (B)
Mileage: 99,000 miles
Delco Unit Opt 160 Amps
Delco Unit Opt 160 Amps
w/ Delco 160 amp alt.
Delco Unit Std 145 Amps
It fits 4-wheel drive vehicles with a 6.6L engine and automatic transmission. It is a 170-amp alternator.
Condition: Excellent (A)
w/ Delco 145 amp alt.
Delco Unit Std 145 Amps
For vehicles with the 6.6L turbo diesel engine. This is a 150-amp alternator manufactured by Denso.
Condition: Excellent (A)
Mileage: 45,400 miles
For vehicles with the 6.6L engine (L8T) and a 170-amp alternator.
Condition: Excellent (A)
Mileage: 15,500 miles
For vehicles with the 6.6L turbo diesel engine. This is a 170 amp auxiliary alternator.
Condition: Excellent (A)
Mileage: 47,100 miles
To 145 Amp Alternator
Bosch Unit 125 Amps
Bosch Unit 125 Amps
Remanufactured; With 145 amp ALTERNATOR; Family DE-DR237; Unit MFR DE; Amps 145; Pulley 6S; Internal Fan; Internal Regulator; Clock 3:00
w/ 145 Amp Alternator
Remanufactured; With Delco 160 amp ALTERNATOR; Family DE-AD244; Unit MFR DE; Amps 160; Pulley 6S; Internal Fan; Internal Regulator; Clock 3:00
w/2 pin plug, w/ 57mm diameter pulley, w/3:00 plug
160 Amp; Delco Unit; with 156mm 6 1/8" dia Case First Time Fit
Dual Alternators, 150 & 220 Amp Alternator, 150 Amp.
w/ 145 Amp Alternator (RPO KG3)
w/ 2 Wire Generator
Delco Unit Std DR44 Type 145 Amps
Delco Unit Opt 160 Amps
160 Amp
To 150 Amp Alternator with Single Alternator
Professional; With Remy Alt; With High Output Alt; 160 Amps
w/ 145 Amp Alternator
Bosch Unit 125 Amps
125 Amp
Std 150 Amps
Std 150 Amps
w/ Delco 160 amp alt.
w/ 150 amp alt.
w/ 145 Amp Alternator (RPO KG3)
w/ 2 Wire Generator
Delco 145 Amp, Exc. Dual Alternator
Delco Unit Opt 160 Amps
Std 150 Amps
160 Amp.
Std 150 Amps
w/ 150 amp alt.
GM Original Equipment; 150 AMP GENERATOR (KG4); 150 AMP-STEEL PULLEY; LABELED 84143542
w/ 125 Amps Dual Alternator (RPO K76)
Opt 220 Amps
GM Original Equipment; 125 AMP DUAL GENERATOR (K76)
w/ 220 amp alt.
160 Amp.
w/ 145 Amp Alternator (RPO KG3)
w/ 2 Wire Generator
150 Amp; 6-Groove Serpentine Pulley OE
w/ 220 amp alt.
GM Original Equipment; 150 AMP GENERATOR (KG4); DECOUPLED PULLEY; LABELED 84143543
w/ 125 Amps Dual Alternator (RPO K76)
Denso IR/IF, 150 Amp, S6 Pulley
w/ 125 Amps Dual Alternator (RPO K76)
GM Original Equipment; 150 AMP & 220 AMP DUAL GENERATOR (KHB), 220 AMP GENERATOR (KW5); LABELED 84143541
Dual Alternators, 150 & 220 Amp Alternator, 150 Amp.
160 Amp.
150 Amp., Stamped #22747894
AD244; Offset 2 in. Spools; 220 Amp; 150 Idle; w/4 pin Voltage Regulator; Natural
AD244; Offset 2 in. Spools; 180 AMP; 135 Idle; w/2 Pin Voltage Regulator; OE Only; Natural
AD244; Offset 2 in. Spools; 220 Amp; 150 Idle; w/4 pin Voltage Regulator; Black
GM Original Equipment; 220 AMP GENERATOR (KW5); LABELED 84143539
AD244; Offset 2 in. Spools; 180 Amp; 135 Idle; w/4 pin Voltage Regulator; Polished
AD244; Offset 2 in. Spools; 180 Amp; 135 Idle; w/4 pin Voltage Regulator; Chrome
150 Amp.
AD244; Offset 2 in. Spools; 220 AMP; 150 Idle; w/2 Pin Voltage Regulator; OE Only; Natural
Denso; 245 Amp; 6 Groove Pulley; 2 Pin OE Hookup; FR-L Voltage Regulator; Hairpin Upgrade; Natural Finish
w/ 125 Amps Dual Alternator (RPO K76)
AD244; Offset 2 in. Spools; 180 AMP; 135 Idle; w/2 Pin Voltage Regulator; OE Only; Polished
AD244; Offset 2 in. Spools; 180 AMP; 135 Idle; w/2 Pin Voltage Regulator; OE Only; Chrome
w/ 145 Amp Alternator (RPO KG3)
w/ 2 Wire Generator
AD244; Offset 2 in. Spools; 220 Amp; 150 Idle; w/4 pin Voltage Regulator; Chrome
AD244; Offset 2 in. Spools; 220 AMP; 150 Idle; w/2 Pin Voltage Regulator; OE Only; Black
AD244; Offset 2 in. Spools; 220 Amp; 150 Idle; w/4 pin Voltage Regulator; Polished
220 Amp.
AD244; 220 Amp; 3 in.; 6 Groove Under Drive Pulley; 2 Pin; Natural Finish High RPM Applications RVC OE Connection
AD244; Offset 2 in. Spools; 220 AMP; 150 Idle; w/2 Pin Voltage Regulator; OE Only; Polished
AD244; Offset 2 in. Spools; 220 AMP; 150 Idle; w/2 Pin Voltage Regulator; OE Only; Chrome
AD244; 220 Amp; 3 in.; 6 Groove Under Drive Pulley; 2 Pin; Black Finish High RPM Applications RVC OE Connection
Dual Alternators, 150 & 220 Amp Alternator, 150 Amp.
Denso; 245 Amp; 6 Groove Decoupler Pulley; w/2 pin OE Hookup; FR-L Voltage Regulator w/Clutch; Hairpin Upgrade; Natural Finish
220 Amp.
Dual Alternators, 150 & 220 Amp Alternator, 150 Amp.
Dual Alternators, 150 & 220 Amp Alternator, 220 Amp.
Browse our selection of quality alternator parts designed specifically for your GMC Sierra 3500 HD. We carry options across multiple trim levels, body styles, and engine configurations to ensure a perfect fit.
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Cab & Chassis · Crew Cab Pickup · Extended Cab Pickup · Standard Cab Pickup
V8 6.0L · V8 6.6L
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