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CHARGING SYSTEMS
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DELCO · Alternator
AlternatorIR/IFDELCO

8550

PIC240-6428, 240-6226
Voltage
12V
Amperage
145A
Rotation
CW
10 interchanges90 applications28 components
Note:This Unit Has a Similar Mounting to the 8302. Also see GM# 20881337. | This is a 145A Alternator with DR37 cast into DEH. Stator OD is 137mm. 2Pin F-L VR with 7755 stamped on OE VR. Pulley OD is 59mm at top of belt groove.089 is stamped into the face of the 6 groove pulley. Also see 240-6428, may be the same unit.

Specifications

Full technical detail

Type
Alternator
Manufacturer
DELCO
Design
IR/IF
Voltage
12V
Amperage
145A
Rotation
CW
MFR Series
DR37
Pulley Design
S6
Pulley Groove OD
0
Plug Code
346
Plug Clock
12:00

Vehicle applications

Fits 90 configurations

Domestic(90)
MakeModelEngineYears
Cadillac(Truck)EscaladeV8 6.2L 6162cc 376cid2011–2014
Cadillac(Truck)EscaladeV8 6.2L 6162cc 376cid2009–2010
Cadillac(Truck)EscaladeV8 6.0L 5967cc 364cid2009–2009
Cadillac(Truck)Escalade ESVV8 6.2L 6162cc 376cid2011–2014
Cadillac(Truck)Escalade EXTV8 6.2L 6162cc 376cid2011–2013
Chevrolet(Truck)AvalancheV8 5.3L 5328cc 325cid2011–2013
Chevrolet(Truck)AvalancheV8 6.0L 5967cc 364cid2009–2009
Chevrolet(Truck)ColoradoV8 5.3L 5328cc 325cid2011–2012
Chevrolet(Truck)ColoradoV8 5.3L 5328cc 325cid2009–2010
Chevrolet(Van)Express 1500V8 5.3L 5328cc 325cid2011–2014
Chevrolet(Van)Express 1500V6 4.3L 262cid2011–2014
Chevrolet(Van)Express 1500V6 4.3L 262cid2009–2010
Chevrolet(Van)Express 1500V8 5.3L 5328cc 325cid GAS2009–2010
Chevrolet(Van)Express 1500V6 4.3L 262cid2009–2009
Chevrolet(Medium/Heavy Truck)Express 4500V8 6.0L 5967cc 364cid General Motors LC82016–2016
Chevrolet(Medium/Heavy Truck)Express 4500V8 6.0L 5967cc 364cid General Motors L962016–2016
Chevrolet(Medium/Heavy Truck)Express 4500V8 6.0L 5967cc 364cid General Motors L962012–2014
Chevrolet(Medium/Heavy Truck)Express 4500V8 6.0L 5967cc 364cid General Motors LC82012–2014
Chevrolet(Medium/Heavy Truck)Express 4500V8 6.0L 5967cc 364cid2011–2011
Chevrolet(Medium/Heavy Truck)Express 4500V8 6.0L 5967cc 364cid General Motors L962010–2010
Chevrolet(Van)Express CargoV8 6.0L 5967cc 364cid2013–2014
Chevrolet(Van)Express PasajerosV8 6.0L 5967cc 364cid2013–2014
Chevrolet(Van)Express PasajerosV8 5.3L 5328cc 325cid2013–2014
Chevrolet(Truck)LCF 3500V8 6.0L 5967cc 364cid2016–2016
Chevrolet(Medium/Heavy Truck)LCF 4500V8 6.0L 5967cc 364cid General Motors L962016–2016
Chevrolet(Medium/Heavy Truck)LCF 4500V8 6.0L 5967cc 364cid General Motors LC82016–2016
Chevrolet(Truck)Silverado 1500V8 4.8L 294cid2012–2013
Chevrolet(Truck)Silverado 1500V8 6.2L 6162cc 376cid VIN 22013–2013
Chevrolet(Truck)Silverado 1500V6 4.3L 262cid VIN X2011–2013
Chevrolet(Truck)Silverado 1500V8 5.3L 5328cc 325cid2012–2013
Chevrolet(Truck)Silverado 1500V8 5.3L 5328cc 325cid VIN2011–2011
Chevrolet(Truck)Silverado 1500V8 5.3L 5328cc 325cid VIN 32011–2011
Chevrolet(Truck)Silverado 2500 HDV8 6.0L 5967cc 364cid2013–2014
Chevrolet(Truck)Silverado 2500 HDV8 6.0L 5967cc 364cid2007–2009
Chevrolet(Truck)Silverado 3500 HDV8 6.0L 5967cc 364cid2013–2014
Chevrolet(Truck)Suburban 1500V8 5.3L 5328cc 325cid2010–2014
Chevrolet(Truck)Suburban 1500V8 6.0L 5967cc 364cid2009–2009
Chevrolet(Truck)Suburban 1500V8 5.3L 5328cc 325cid2007–2007
Chevrolet(Truck)Suburban 2500V8 6.0L 5967cc 364cid2011–2013
Chevrolet(Truck)Suburban 2500V8 6.0L 5967cc 364cid2009–2010
Chevrolet(Truck)TahoeV8 5.3L 5328cc 325cid2012–2014
Chevrolet(Truck)TahoeV8 5.3L 5328cc 325cid VIN 32011–2011
Chevrolet(Truck)TahoeV8 5.3L 5328cc 325cid VIN2011–2011
Chevrolet(Truck)TahoeV8 4.8L 294cid2009–2009
Chevrolet(Truck)TahoeV8 6.0L 5967cc 364cid2009–2009
Chevrolet(Truck)TahoeV8 6.2L 6162cc 376cid2009–2009
Chevrolet(Truck)TahoeV8 6.2L 6162cc 376cid VIN 32008–2008
Chevrolet(Truck)TahoeV8 5.3L 5328cc 325cid VIN 32007–2007
Freightliner(Medium/Heavy Truck)MT45V8 6.0L 5972cc 365cid General Motors2014–2014
Freightliner(Medium/Heavy Truck)MT55V8 6.0L 5972cc 365cid General Motors2013–2014
Freightliner(Medium/Heavy Truck)XB LineV8 6.0L 5972cc 365cid General Motors2014–2014
Freightliner(Medium/Heavy Truck)XC Modular RailV8 6.0L 5972cc 365cid General Motors2013–2013
GMC(Truck)CanyonV8 5.3L 5328cc 325cid2011–2012
GMC(Truck)CanyonV8 5.3L 5328cc 325cid2009–2010
GMC(Van)Savana 1500V6 4.3L 262cid2011–2014
GMC(Van)Savana 1500V8 5.3L 5328cc 325cid2009–2014
GMC(Van)Savana 1500V6 4.3L 262cid2009–2010
GMC(Truck)Sierra 1500V8 6.2L 6162cc 376cid VIN 22013–2013
GMC(Truck)Sierra 1500V6 4.3L 262cid2012–2013
GMC(Truck)Sierra 1500V8 4.8L 294cid2012–2013
GMC(Truck)Sierra 1500V8 5.3L 5328cc 325cid2012–2013
GMC(Truck)Sierra 1500V6 4.3L 262cid VIN X2011–2011
GMC(Truck)Sierra 1500V8 5.3L 5328cc 325cid VIN2011–2011
GMC(Truck)Sierra 1500V8 5.3L 5328cc 325cid VIN 32011–2011
GMC(Truck)Sierra 2500 HDV8 6.0L 5967cc 364cid2013–2013
GMC(Truck)Sierra 2500 HDV8 6.0L 5967cc 364cid2007–2009
GMC(Truck)Sierra 3500 HDV8 6.0L 5967cc 364cid2013–2013
GMC(Truck)YukonV8 6.2L 6162cc 376cid2011–2014
GMC(Truck)YukonV8 5.3L 5328cc 325cid2012–2014
GMC(Truck)YukonV8 5.3L 5328cc 325cid VIN2011–2011
GMC(Truck)YukonV8 6.0L 5967cc 364cid2009–2010
GMC(Truck)YukonV8 6.2L 6162cc 376cid2009–2010
GMC(Truck)YukonV8 4.8L 294cid2009–2009
GMC(Truck)YukonV8 6.2L 6162cc 376cid2007–2008
GMC(Truck)YukonV8 5.3L 5328cc 325cid VIN2007–2007
GMC(Truck)Yukon XL 1500V8 6.2L 6162cc 376cid VIN F2013–2014
GMC(Truck)Yukon XL 1500V8 5.3L 5328cc 325cid2012–2014
GMC(Truck)Yukon XL 1500V8 6.2L 6162cc 376cid2012–2012
GMC(Truck)Yukon XL 1500V8 6.2L 6162cc 376cid VIN F2011–2011
GMC(Truck)Yukon XL 1500V8 5.3L 5328cc 325cid VIN2011–2011
GMC(Truck)Yukon XL 1500V8 6.2L 6162cc 376cid VIN 22011–2011
GMC(Truck)Yukon XL 1500V8 5.3L 5328cc 325cid VIN 32011–2011
GMC(Truck)Yukon XL 1500V8 6.2L 6162cc 376cid2009–2010
GMC(Truck)Yukon XL 1500V8 6.0L 5967cc 364cid2009–2009
GMC(Truck)Yukon XL 1500V8 6.2L 6162cc 376cid VIN F2007–2008
GMC(Truck)Yukon XL 1500V8 5.3L 5328cc 325cid VIN 32007–2007
GMC(Truck)Yukon XL 2500V8 6.0L 5967cc 364cid2011–2013
GMC(Truck)Yukon XL 2500V8 6.0L 5967cc 364cid2009–2010
Hummer(Truck)H3V8 5.3L 5328cc 325cid2010–2010
Hummer(Truck)H3TV8 5.3L 5328cc 325cid VIN P2010–2010

Component breakdown

Replacement parts that go inside this unit

ComponentPart numbers
Bearing, Ball5-3500 5-4700
Brush Holder Assy, Alt7440-4618
Brush Holder, Alt7440-4618A
Brush, Alt7340-219 7340-220
Cover, Alt8440-4047
Diode, Pos7700-242
Frame Assy, Rectifier, Alt7740-1162
Frame Assy, Rectifier, Alt7740-1162
Frame, DE, Alt7640-4032
Nut9500-1300 9500-1460
Plug Code9801-346
Plug Code9801-346
Pulley7940-1290
Pulley7940-1279
Rectifier, Pos7740-1160
Regulator, Alt8040-6306
Regulator, Alt8040-6306
Retainer, Alt8590-906
Rotor7040-345
Screw9640-4042 9640-4043
Slip Ring, Rotor7140-440
Spacer, Alt9740-4119 9940-0008
Spring, Brush, Alt9200-1004
Stator7240-6199
Stator7240-6199
Test Lead, Alt9800-RVC
Thru Bolt9640-4200
Washer, Lock9740-1002