Brands Vehicles
Lowest Prices
Free Returns
Online Since 2009
Shopping for

2003 GMC Sierra 3500

X

Displaying 1 to 25 (of 26 products)
On Sale:

$192.32

Avail:
1 in Stock
Warehouse: US-1
Qty:
EnginePer VehicleFit NotesFitment Notes
2003 GMC Sierra 3500 equipped with
8.1L V8 Gas OHV,
6.6L V8 Diesel OHV Turbo,
6.0L V8 Gas OHV
 
1
 
Delco AD244, 200A
 
2003 GMC Sierra 3500 equipped with
8.1L V8 Gas OHV,
6.6L V8 Diesel OHV Turbo,
6.0L V8 Gas OHV Delco AD244, 200A

1 Per Vehicle
On Sale:

$130.20

Core: See Value In Cart
Avail:
134 in Stock
Warehouse: US-7
Qty:
EnginePer VehicleFit NotesFitment Notes
2003 GMC Sierra 3500 equipped with
8.1L V8 Gas OHV,
6.6L V8 Diesel OHV Turbo,
6.0L V8 Gas OHV
 
1
 
Remanufactured
w/ Delco 105 amp alt.
 
2003 GMC Sierra 3500 equipped with
8.1L V8 Gas OHV,
6.6L V8 Diesel OHV Turbo,
6.0L V8 Gas OHV Remanufactured
w/ Delco 105 amp alt.

1 Per Vehicle
On Sale:

$121.28

Avail:
17 in Stock
Warehouse: US-7
Qty:
EnginePer VehicleFit NotesFitment Notes
2003 GMC Sierra 3500 equipped with
8.1L V8 Gas OHV,
6.6L V8 Diesel OHV Turbo,
6.0L V8 Gas OHV
 
1
 
New
w/ Delco 105 amp alt.
 
2003 GMC Sierra 3500 equipped with
8.1L V8 Gas OHV,
6.6L V8 Diesel OHV Turbo,
6.0L V8 Gas OHV New
w/ Delco 105 amp alt.

1 Per Vehicle
On Sale:

$169.88

Core: See Value In Cart
Avail:
107 in Stock
Warehouse: US-7
Qty:
EnginePer VehicleFit NotesFitment Notes
2003 GMC Sierra 3500 equipped with
8.1L V8 Gas OHV,
6.6L V8 Diesel OHV Turbo,
6.0L V8 Gas OHV
 
1
 
Remanufactured
Optional, w/ 145 amp alt.
 
2003 GMC Sierra 3500 equipped with
8.1L V8 Gas OHV,
6.6L V8 Diesel OHV Turbo,
6.0L V8 Gas OHV Remanufactured
Optional, w/ 145 amp alt.

1 Per Vehicle
On Sale:

$195.58

Avail:
88 in Stock
Warehouse: US-7
Qty:
EnginePer VehicleFit NotesFitment Notes
2003 GMC Sierra 3500 equipped with
8.1L V8 Gas OHV,
6.6L V8 Diesel OHV Turbo,
6.0L V8 Gas OHV
 
1
 
New
Optional, w/ 145 amp alt.
 
2003 GMC Sierra 3500 equipped with
8.1L V8 Gas OHV,
6.6L V8 Diesel OHV Turbo,
6.0L V8 Gas OHV New
Optional, w/ 145 amp alt.

1 Per Vehicle
On Sale:

$208.59

Core: See Value In Cart
Avail:
8 in Stock
Warehouse: US-7
Qty:
EnginePer VehicleFit NotesFitment Notes
2003 GMC Sierra 3500 equipped with
8.1L V8 Gas OHV,
6.6L V8 Diesel OHV Turbo,
6.0L V8 Gas OHV
 
1
 
Alternator (Remanufactured)
To 145 Amp Alternator
 
2003 GMC Sierra 3500 equipped with
8.1L V8 Gas OHV,
6.6L V8 Diesel OHV Turbo,
6.0L V8 Gas OHV Alternator (Remanufactured)
To 145 Amp Alternator

1 Per Vehicle
On Sale:

$167.28

Core: See Value In Cart
Avail:
6 in Stock
Warehouse: US-7
Qty:
EnginePer VehicleFit NotesFitment Notes
2003 GMC Sierra 3500 equipped with
8.1L V8 Gas OHV,
6.6L V8 Diesel OHV Turbo,
6.0L V8 Gas OHV
 
1
 
Alternator (Remanufactured)
To 105 Amp Alternator
 
2003 GMC Sierra 3500 equipped with
8.1L V8 Gas OHV,
6.6L V8 Diesel OHV Turbo,
6.0L V8 Gas OHV Alternator (Remanufactured)
To 105 Amp Alternator

1 Per Vehicle
On Sale:

$135.08

Core: See Value In Cart
Avail:
4 in Stock
Warehouse: US-1
Qty:
EnginePer VehicleFit NotesFitment Notes
2003 GMC Sierra 3500 equipped with
6.0L V8 Gas OHV,
6.0L V8 CNG OHV
 
1
 
Premium Reman Alternator
105 Amps
VIN: U
w/11:30 Alt Plug
 
2003 GMC Sierra 3500 equipped with
6.0L V8 Gas OHV,
6.0L V8 CNG OHV Premium Reman Alternator
105 Amps
VIN: U
w/11:30 Alt Plug
1 Per Vehicle
2003 GMC Sierra 3500 equipped with
6.6L V8 Diesel OHV Turbo
 
1
 
Premium Reman Alternator
105 Amps
VIN: 1, DIESEL
w/11:30 Alt Plug
 
2003 GMC Sierra 3500 equipped with
6.6L V8 Diesel OHV Turbo Premium Reman Alternator
105 Amps
VIN: 1, DIESEL
w/11:30 Alt Plug
1 Per Vehicle
2003 GMC Sierra 3500 equipped with
8.1L V8 Gas OHV
 
1
 
Premium Reman Alternator
105 Amps
VIN: G
w/11:30 Alt Plug
 
2003 GMC Sierra 3500 equipped with
8.1L V8 Gas OHV Premium Reman Alternator
105 Amps
VIN: G
w/11:30 Alt Plug
1 Per Vehicle
On Sale:

$188.23

Core: See Value In Cart
Avail:
9 in Stock
Warehouse: US-1
Qty:
EnginePer VehicleFit NotesFitment Notes
2003 GMC Sierra 3500 equipped with
6.6L V8 Diesel OHV Turbo
 
1
 
Premium Reman Alternator
145 Amps
DIESEL
w/12:00 Alt Plug
 
2003 GMC Sierra 3500 equipped with
6.6L V8 Diesel OHV Turbo Premium Reman Alternator
145 Amps
DIESEL
w/12:00 Alt Plug
1 Per Vehicle
2003 GMC Sierra 3500 equipped with
6.6L V8 Diesel OHV Turbo
 
1
 
Premium Reman Alternator
145 Amps
DIESEL
w/144mm (5 5/8) dia Alt Case
 
2003 GMC Sierra 3500 equipped with
6.6L V8 Diesel OHV Turbo Premium Reman Alternator
145 Amps
DIESEL
w/144mm (5 5/8) dia Alt Case
1 Per Vehicle
2003 GMC Sierra 3500 equipped with
8.1L V8 Gas OHV
 
1
 
Premium Reman Alternator
145 Amps
VIN: G
w/12:00 Alt Plug
 
2003 GMC Sierra 3500 equipped with
8.1L V8 Gas OHV Premium Reman Alternator
145 Amps
VIN: G
w/12:00 Alt Plug
1 Per Vehicle
2003 GMC Sierra 3500 equipped with
6.0L V8 Gas OHV,
6.0L V8 CNG OHV
 
1
 
Premium Reman Alternator
145 Amps
VIN: U
w/12:00 Alt Plug
 
2003 GMC Sierra 3500 equipped with
6.0L V8 Gas OHV,
6.0L V8 CNG OHV Premium Reman Alternator
145 Amps
VIN: U
w/12:00 Alt Plug
1 Per Vehicle
On Sale:

$98.21

Avail:
7 in Stock
Warehouse: US-1
Qty:
EnginePer VehicleFit NotesFitment Notes
2003 GMC Sierra 3500 equipped with
8.1L V8 Gas OHV,
6.6L V8 Diesel OHV Turbo,
6.0L V8 Gas OHV
 
1
 
Delco 105 Amp
 
2003 GMC Sierra 3500 equipped with
8.1L V8 Gas OHV,
6.6L V8 Diesel OHV Turbo,
6.0L V8 Gas OHV Delco 105 Amp

1 Per Vehicle
On Sale:

$96.55

Avail:
14 in Stock
Warehouse: US-1
Qty:
EnginePer VehicleFit NotesFitment Notes
2003 GMC Sierra 3500 equipped with
8.1L V8 Gas OHV,
6.6L V8 Diesel OHV Turbo,
6.0L V8 Gas OHV
 
1
 
Delco AD244, 145A
 
2003 GMC Sierra 3500 equipped with
8.1L V8 Gas OHV,
6.6L V8 Diesel OHV Turbo,
6.0L V8 Gas OHV Delco AD244, 145A

1 Per Vehicle
On Sale:

$135.99

Avail:
1 in Stock
Warehouse: US-1
Qty:
EnginePer VehicleFit NotesFitment Notes
2003 GMC Sierra 3500 equipped with
8.1L V8 Gas OHV,
6.6L V8 Diesel OHV Turbo,
6.0L V8 Gas OHV
 
1
 
253 Amp Aftermarket upgrade
 
2003 GMC Sierra 3500 equipped with
8.1L V8 Gas OHV,
6.6L V8 Diesel OHV Turbo,
6.0L V8 Gas OHV 253 Amp Aftermarket upgrade

1 Per Vehicle
On Sale:

$185.86

Avail:
1 in Stock
Warehouse: US-1
Qty:
EnginePer VehicleFit NotesFitment Notes
2003 GMC Sierra 3500 equipped with
8.1L V8 Gas OHV,
6.6L V8 Diesel OHV Turbo,
6.0L V8 Gas OHV
 
1
 
AD244 Series 220 Amp upgrade
 
2003 GMC Sierra 3500 equipped with
8.1L V8 Gas OHV,
6.6L V8 Diesel OHV Turbo,
6.0L V8 Gas OHV AD244 Series 220 Amp upgrade

1 Per Vehicle
On Sale:

$142.04

Avail:
4 in Stock
Warehouse: US-7
Qty:
EnginePer VehicleFit NotesFitment Notes
2003 GMC Sierra 3500 equipped with
8.1L V8 Gas OHV,
6.6L V8 Diesel OHV Turbo,
6.0L V8 Gas OHV
 
1
 
Power Generation (Amps): 145A
Crew Cab Pickup
 
2003 GMC Sierra 3500 equipped with
8.1L V8 Gas OHV,
6.6L V8 Diesel OHV Turbo,
6.0L V8 Gas OHV Power Generation (Amps): 145A
Crew Cab Pickup

1 Per Vehicle
Core: See Value In Cart
Avail:
0 in Stock
 OUT OF STOCK
EnginePer VehicleFit NotesFitment Notes
2003 GMC Sierra 3500 equipped with
6.0L V8 Gas OHV
 
1
 
Reman Alternator
145 Amp
w/ 4-Pin Plug, Delco Unit
First Time Fit
 
2003 GMC Sierra 3500 equipped with
6.0L V8 Gas OHV Reman Alternator
145 Amp
w/ 4-Pin Plug, Delco Unit
First Time Fit

1 Per Vehicle
2003 GMC Sierra 3500 equipped with
8.1L V8 Gas OHV
 
1
 
Reman Alternator
145 Amp
Delco Unit
First Time Fit
 
2003 GMC Sierra 3500 equipped with
8.1L V8 Gas OHV Reman Alternator
145 Amp
Delco Unit
First Time Fit

1 Per Vehicle
Core: See Value In Cart
Avail:
0 in Stock
 OUT OF STOCK
EnginePer VehicleFit NotesFitment Notes
2003 GMC Sierra 3500 equipped with
8.1L V8 Gas OHV,
6.6L V8 Diesel OHV Turbo,
6.0L V8 Gas OHV
 
1
 
-- (Remanufactured)---
OEM P/ N 10480388
FOR 2ND DES SEE 19151898
DELCO SERIES AD230, 6S PULLEY
105 AMP GENERATOR(K68)
1st Design
 
2003 GMC Sierra 3500 equipped with
8.1L V8 Gas OHV,
6.6L V8 Diesel OHV Turbo,
6.0L V8 Gas OHV -- (Remanufactured)---
OEM P/ N 10480388
FOR 2ND DES SEE 19151898
DELCO SERIES AD230, 6S PULLEY
105 AMP GENERATOR(K68)
1st Design

1 Per Vehicle
2003 GMC Sierra 3500 equipped with
8.1L V8 Gas OHV,
6.6L V8 Diesel OHV Turbo,
6.0L V8 Gas OHV
 
2
 
-- (Remanufactured)---
OEM P/ N 10480388
FOR 2ND DES SEE 19151898
DELCO SERIES AD230, 6S PULLEY
105 AMP DUAL GENERATOR(K65), 105 AMP DUAL GENERATOR(8X5)
1st Design
 
2003 GMC Sierra 3500 equipped with
8.1L V8 Gas OHV,
6.6L V8 Diesel OHV Turbo,
6.0L V8 Gas OHV -- (Remanufactured)---
OEM P/ N 10480388
FOR 2ND DES SEE 19151898
DELCO SERIES AD230, 6S PULLEY
105 AMP DUAL GENERATOR(K65), 105 AMP DUAL GENERATOR(8X5)
1st Design

2 Per Vehicle
Core: See Value In Cart
Avail:
0 in Stock
 OUT OF STOCK
EnginePer VehicleFit NotesFitment Notes
2003 GMC Sierra 3500 equipped with
8.1L V8 Gas OHV,
6.6L V8 Diesel OHV Turbo,
6.0L V8 Gas OHV
 
1
 
-- (Remanufactured)---
OEM P/ N 15755616
FOR 1ST DES SEE 19151893
DELCO SERIES AD230, 6S PULLEY
105 AMP GENERATOR(K68)
2nd Design
 
2003 GMC Sierra 3500 equipped with
8.1L V8 Gas OHV,
6.6L V8 Diesel OHV Turbo,
6.0L V8 Gas OHV -- (Remanufactured)---
OEM P/ N 15755616
FOR 1ST DES SEE 19151893
DELCO SERIES AD230, 6S PULLEY
105 AMP GENERATOR(K68)
2nd Design

1 Per Vehicle
2003 GMC Sierra 3500 equipped with
8.1L V8 Gas OHV,
6.6L V8 Diesel OHV Turbo,
6.0L V8 Gas OHV
 
2
 
-- (Remanufactured)---
OEM P/ N 10464481
FOR 1ST DES SEE 19151893
DELCO SERIES AD230, 6S PULLEY
105 AMP DUAL GENERATOR(K65), 105 AMP DUAL GENERATOR(8X5)
2nd Design
 
2003 GMC Sierra 3500 equipped with
8.1L V8 Gas OHV,
6.6L V8 Diesel OHV Turbo,
6.0L V8 Gas OHV -- (Remanufactured)---
OEM P/ N 10464481
FOR 1ST DES SEE 19151893
DELCO SERIES AD230, 6S PULLEY
105 AMP DUAL GENERATOR(K65), 105 AMP DUAL GENERATOR(8X5)
2nd Design

2 Per Vehicle
On Sale:

$379.83

Core: See Value In Cart
Avail:
30 in Stock
Warehouse: US-7
Qty:
EnginePer VehicleFit NotesFitment Notes
2003 GMC Sierra 3500 equipped with
8.1L V8 Gas OHV,
6.6L V8 Diesel OHV Turbo,
6.0L V8 Gas OHV
 
1
 
-- (Remanufactured)---
145 AMP(KG3), SEO 145 AMP GEN(8C6)
 
2003 GMC Sierra 3500 equipped with
8.1L V8 Gas OHV,
6.6L V8 Diesel OHV Turbo,
6.0L V8 Gas OHV -- (Remanufactured)---
145 AMP(KG3), SEO 145 AMP GEN(8C6)

1 Per Vehicle
On Sale:

$165.92

Core: See Value In Cart
Avail:
163 in Stock
Warehouse: US-4
Qty:
EnginePer VehicleFit NotesFitment Notes
2003 GMC Sierra 3500 equipped with
8.1L V8 Gas OHV,
6.6L V8 Diesel OHV Turbo,
6.0L V8 Gas OHV
 
1
 
Gold-- (Remanufactured)---
w/ Delco 105 amp alt.
Unit MFR DE
Remanufactured
Regulator IR
Pulley 6S
Fan IF
Family DE-AD230
Clock 11:30
Amps 105
 
2003 GMC Sierra 3500 equipped with
8.1L V8 Gas OHV,
6.6L V8 Diesel OHV Turbo,
6.0L V8 Gas OHV Gold-- (Remanufactured)---
w/ Delco 105 amp alt.
Unit MFR DE
Remanufactured
Regulator IR
Pulley 6S
Fan IF
Family DE-AD230
Clock 11:30
Amps 105

1 Per Vehicle
On Sale:

$170.96

Core: See Value In Cart
Avail:
5 in Stock
Warehouse: US-12
Qty:
EnginePer VehicleFit NotesFitment Notes
2003 GMC Sierra 3500 equipped with
8.1L V8 Gas OHV,
6.6L V8 Diesel OHV Turbo,
6.0L V8 Gas OHV
 
1
 
Gold-- (Remanufactured)---
Unit MFR DE
Remanufactured
Regulator IR
Pulley 6S
Optional, w/ 145 amp alt.
Fan IF
Family DE-AD244
Clock 3:00
Amps 145
 
2003 GMC Sierra 3500 equipped with
8.1L V8 Gas OHV,
6.6L V8 Diesel OHV Turbo,
6.0L V8 Gas OHV Gold-- (Remanufactured)---
Unit MFR DE
Remanufactured
Regulator IR
Pulley 6S
Optional, w/ 145 amp alt.
Fan IF
Family DE-AD244
Clock 3:00
Amps 145

1 Per Vehicle
On Sale:

$185.87

Avail:
125 in Stock
Warehouse: US-7
Qty:
EnginePer VehicleFit NotesFitment Notes
2003 GMC Sierra 3500 equipped with
8.1L V8 Gas OHV,
6.6L V8 Diesel OHV Turbo,
6.0L V8 Gas OHV
 
1
 
Gold
w/ 137mm (5 3/8) Diameter Alt Case
105 Amps
 
2003 GMC Sierra 3500 equipped with
8.1L V8 Gas OHV,
6.6L V8 Diesel OHV Turbo,
6.0L V8 Gas OHV Gold
w/ 137mm (5 3/8) Diameter Alt Case
105 Amps

1 Per Vehicle
Avail:
0 in Stock
 OUT OF STOCK
EnginePer VehicleFit NotesFitment Notes
2003 GMC Sierra 3500 equipped with
8.1L V8 Gas OHV,
6.6L V8 Diesel OHV Turbo,
6.0L V8 Gas OHV
 
1
 
145 Amp (DR44G) upgrade version
 
2003 GMC Sierra 3500 equipped with
8.1L V8 Gas OHV,
6.6L V8 Diesel OHV Turbo,
6.0L V8 Gas OHV 145 Amp (DR44G) upgrade version

1 Per Vehicle
Avail:
0 in Stock
 OUT OF STOCK
EnginePer VehicleFit NotesFitment Notes
2003 GMC Sierra 3500 equipped with
8.1L V8 Gas OHV,
6.6L V8 Diesel OHV Turbo,
6.0L V8 Gas OHV
 
1
 
Alternator
105 Ampere
105 Ampere
 
2003 GMC Sierra 3500 equipped with
8.1L V8 Gas OHV,
6.6L V8 Diesel OHV Turbo,
6.0L V8 Gas OHV Alternator
105 Ampere
105 Ampere

1 Per Vehicle
Avail:
0 in Stock
 OUT OF STOCK
EnginePer VehicleFit NotesFitment Notes
2003 GMC Sierra 3500 equipped with
6.6L V8 Diesel OHV Turbo,
6.0L V8 Gas OHV
 
1
 
Alternator
145 AMP
Pulley Diameter 57
145 AMP
Pulley Diameter 57
 
2003 GMC Sierra 3500 equipped with
6.6L V8 Diesel OHV Turbo,
6.0L V8 Gas OHV Alternator
145 AMP
Pulley Diameter 57
145 AMP
Pulley Diameter 57

1 Per Vehicle
On Sale:

$144.27

Avail:
6 in Stock
Warehouse: US-7
Qty:
EnginePer VehicleFit NotesFitment Notes
2003 GMC Sierra 3500 equipped with
8.1L V8 Gas OHV
 
1
 
New Alternator
105 Amps
VIN: G
w/11:30 Alt Plug
 
2003 GMC Sierra 3500 equipped with
8.1L V8 Gas OHV New Alternator
105 Amps
VIN: G
w/11:30 Alt Plug
1 Per Vehicle
2003 GMC Sierra 3500 equipped with
6.0L V8 Gas OHV,
6.0L V8 CNG OHV
 
1
 
New Alternator
105 Amps
VIN: U
w/11:30 Alt Plug
 
2003 GMC Sierra 3500 equipped with
6.0L V8 Gas OHV,
6.0L V8 CNG OHV New Alternator
105 Amps
VIN: U
w/11:30 Alt Plug
1 Per Vehicle
2003 GMC Sierra 3500 equipped with
6.6L V8 Diesel OHV Turbo
 
1
 
New Alternator
105 Amps
VIN: 1, DIESEL
w/11:30 Alt Plug
 
2003 GMC Sierra 3500 equipped with
6.6L V8 Diesel OHV Turbo New Alternator
105 Amps
VIN: 1, DIESEL
w/11:30 Alt Plug
1 Per Vehicle
Displaying 1 to 25 (of 26 products)