2003 Chevy Silverado 2500 Engine Parts

391 products fit your

2003 Chevy Silverado 2500

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2003 Chevy Silverado 2500

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Truck

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Truck Accessories

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-11%

GM AD244 Style High Output LS Swap 220 Amp Black Alternator

Speedway Motors |

#UP233140

GM AD244 Style High Output LS Swap 220 Amp Black Alternator

Garage Sale Type:

Blemished

One Wire Alternator:

Alternator Amperage:

220 amp

$229.99

/each

$259.99

-11%

Speedway Motors |

#UP233014

GM AD244 Style High Output LS Swap 220 Amp Black Alternator

Garage Sale Type:

Blemished

One Wire Alternator:

Alternator Amperage:

220 amp

$229.99

/each

$259.99

-11%

Speedway Motors |

#UP233542

GM AD244 Style High Output LS Swap 220 Amp Black Alternator

Garage Sale Type:

Blemished

One Wire Alternator:

Alternator Amperage:

220 amp

$229.99

/each

$259.99

-11%

Speedway Motors |

#UP233628

GM AD244 Style High Output LS Swap 220 Amp Black Alternator

Garage Sale Type:

Blemished

One Wire Alternator:

Alternator Amperage:

220 amp

$229.99

/each

$259.99

-11%

Speedway Motors |

#UP229823

GM AD244 Chrome LS Alternator

Garage Sale Type:

Blemished

One Wire Alternator:

Alternator Amperage:

220 amp

$223.99

/each

$253.99

Gen III/IV LS Engine ID Guide

Looking to swap the venerable LS engine into your hot rod, muscle car, or classic truck? Take a look at our detailed identification guide for Gen III/IV LS engines before you hit the salvage yard or swap meet!

Small Block and Big Block Chevy Engine Flexplate Guide

Over several generations of small block Chevy (and big block Chevy) engines there have been several changes that dictate what flexplate works with them. We’ll help you determine the correct flexplate for your Chevy engine in this buyer’s guide.

55 Chevy Engine Build

Derek kicks off his 55 Chevy rebuild with a fresh small block.

Historic Chevy Performance Engines

Take a look at a few of the rare and wonderful Chevy engines in the Museum of American Speed!

NASCAR Engines Through the Years

In honor of NASCAR's 75th anniversary, we're taking a look at a few remarkable engines that have powered our favorite racers to victory through the years.

Historic Indy Engines

To celebrate the upcoming 106th running of the Indianaplis 500, here's a look back at a few of the engines that have competed at the Brickyard over the years.

Project Chevelle 383 Engine Tech Article

At long last, Project Chevelle gets a muscle car heart transplant in the form of a 383 from BluePrint Engines.

Chevelle 283 to a 496 BluePrint Crate Engine

In this project, you will see how Jeff repaints a garage sale 496 BluePrint crate engine and learn the importance of preparing the engine for a successful restoration.

Engine Cylinder Numbers

Byron's 1975 Chevy Vega

It's not every day that you see a wild, IMSA inspired, 550 horsepower Vega. Byron Burnham went way outside the box with this one, and we love it.

$152 Off

MSD 826483 Ignition Coil, GM LS Blaster, L-Series Truck, 8-Pack

MSD |

#UP233365

MSD 826483 Ignition Coil, GM LS Blaster, L-Series Truck, 8-Pack

Garage Sale Type:

Open Box

$428.39

/set

$579.95

-22%

Proform |

#UP232367

Proform 66518 Harmonic Balancer Cover Blue Anodized Finish

Garage Sale Type:

Open Box

$95.39

/each

$122.99

-87%

Speedway Motors |

#54568810-1

Push-In Valve Cover Breather Adapters

Sold in Quantity:

Pair

Garage Sale Type:

Discontinued

$1.63

/pair

$12.99

-83%

Speedway Motors |

#9503766

Midget MSD Ignition Box Mount

Garage Sale Type:

Discontinued

Material Type:

Aluminum

$8.54

/each

$50.99

Finned Aluminum Shot Gun Style Air Scoop, Black

Speedway Motors |

#91603180

Finned Aluminum Shot Gun Style Air Scoop, Black

(1)

Garage Sale Type:

Discontinued

Overall Length:

20"

Overall Width:

10.325"

$347.99

/each

-76%

Precision Turbo |

#38674200

Precision Turbo PTP074 Mid/Large Frame Oil Drain Flange

Garage Sale Type:

Discontinued

Turbo Oil Flange Type:

Turbo Drain

Material Type:

Stainless Steel

$9.72

/each

$41.99

-88%

#91281034T

1/2-20 SAE FINE TAPERED TAP

Garage Sale Type:

Discontinued

$2.45

/each

$21.99

-76%

Tracerline TP-3900-0601 Dye-Lite Engine Coolant Dye

Tracer Products |

#39667415

Tracerline TP-3900-0601 Dye-Lite Engine Coolant Dye

Garage Sale Type:

Discontinued

$4.86

/each

$20.99

-15%

Precision Turbo |

#38632000

Precision Turbo Turbocharger Blow-Off Valve

Garage Sale Type:

Discontinued

Adjustable:

Yes

Aluminum Flange Included:

Yes

$271.14

/each

$318.99

-72%

Alexander Racing Enterprises |

#91603471

Alexander Racing Enterprises HLR-575 Headlight Air Intake, Delete

Garage Sale Type:

Discontinued

Tube O.D.:

5.75"

Color:

Silver

$6.81

/each

$24.99

-87%

Precision Turbo |

#UP206545

Precision Turbo PBO085-3200 Turbocharger Wastegate Spring, Small

Spring Type:

Helical

Material Type:

Stainless Steel

Garage Sale Type:

Discontinued

$4.16

/each

$33.44

-72%

Alexander Racing Enterprises |

#91603473

Alexander Racing Enterprises HLR-700 Headlight Air Intake, Delete

Garage Sale Type:

Discontinued

Tube O.D.:

Color:

Silver

$6.81

/each

$24.99

-84%

#12161091

AN8-3/8NPT Tee BMRS

Garage Sale Type:

Discontinued

$4.22

/each

$27.99

-35%

King HP Series Chevy 350/400 LRG Journal Engine Rod Bearings .010

King Bearings |

#UP228716

King HP Series Chevy 350/400 LRG Journal Engine Rod Bearings .010

Garage Sale Type:

Open Box

Rod Journal Diameter:

2.10"

Bearing Construction:

Bi-metal

$58.31

/set

$89.99

Hedman Hedders |

#41869683

Hedman Hedders 69683 99-03 GM Truck Headers, Black

Header Tube Type:

Shorty

Exhaust Port Shape:

Round

Primary Tube Diameter:

1-5/8"

$604.99

/set

Hedman Hedders |

#41863681

Hedman Hedders 63681 99-03 GM Truck Headers, Black

Header Tube Type:

Shorty

Exhaust Port Shape:

Round

Flange Style:

Standard

$726.03

/set

Hedman Hedders |

#41869693

Hedman Hedders 69693 99-03 GM Truck Headers, Black

Header Tube Type:

Shorty

Exhaust Port Shape:

Round

Primary Tube Diameter:

1-5/8"

$674.38

/set

Hedman Hedders |

#41862733

Hedman Hedders 62733 99-07 Chevy HTC

Header Tube Type:

Long Tube

Exhaust Port Shape:

Round

Flange Style:

Standard

$1,217.23

/set

Hedman Hedders |

#41862736

Hedman Hedders 62736 67-87 Chevy Truck LS Swap Headers Uncoated

Header Tube Type:

Long Tube

Exhaust Port Shape:

Round

Flange Style:

Standard

$1,225.37

/set

Hedman Hedders |

#41869723

Hedman Hedders 69723 99-07 GM Truck LS Headers, Long Tube, Black

Header Tube Type:

Long Tube

Exhaust Port Shape:

Round

Primary Tube Diameter:

1-5/8"

$643.99

/set

Hedman Hedders |

#41869726

Hedman Hedders 69726 99-07 GM Truck LS Headers, Long Tube, HTC

Header Tube Type:

Long Tube

Exhaust Port Shape:

Round

Primary Tube Diameter:

1-5/8"

$649.99

/set

FiTech |

#5213099

FiTech 30-99 Ultra Port EFI Standalone ECU

Sold in Quantity:

Kit

GTIN Code:

852192008018

$1,199.00

/each

FiTech |

#52130037

FiTech 30037 Nemesis 4500 Throttle Body

Throttle Body Style:

Multi-Port Injection (MPI)

Sold in Quantity:

Each

$999.00

/each

FiTech |

#52130038

FiTech 30038 Nemesis 4500 Throttle Body

Throttle Body Style:

Multi-Port Injection (MPI)

Sold in Quantity:

Each

$999.00

/each

FiTech |

#52130036

FiTech 30036 Nemesis 4500 Throttle Body

Throttle Body Style:

Multi-Port Injection (MPI)

Sold in Quantity:

Kit

$999.00

/each

-83%

#980502

RLV FLOAT GAUGE

Garage Sale Type:

Discontinued

$0.84

/each

$4.99

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2003 Chevy Silverado 2500 Engine Parts

Subcategory

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Brand

Transmission Family

Availability

Engine Family

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Products

GM AD244 Style High Output LS Swap 220 Amp Black Alternator

GM AD244 Style High Output LS Swap 220 Amp Black Alternator

GM AD244 Style High Output LS Swap 220 Amp Black Alternator

GM AD244 Style High Output LS Swap 220 Amp Black Alternator

GM AD244 Chrome LS Alternator

Related Articles

MSD 826483 Ignition Coil, GM LS Blaster, L-Series Truck, 8-Pack

Proform 66518 Harmonic Balancer Cover Blue Anodized Finish

Push-In Valve Cover Breather Adapters

Midget MSD Ignition Box Mount

Finned Aluminum Shot Gun Style Air Scoop, Black

Precision Turbo PTP074 Mid/Large Frame Oil Drain Flange

1/2-20 SAE FINE TAPERED TAP

Tracerline TP-3900-0601 Dye-Lite Engine Coolant Dye

Precision Turbo Turbocharger Blow-Off Valve

Alexander Racing Enterprises HLR-575 Headlight Air Intake, Delete

Precision Turbo PBO085-3200 Turbocharger Wastegate Spring, Small

Alexander Racing Enterprises HLR-700 Headlight Air Intake, Delete

AN8-3/8NPT Tee BMRS

King HP Series Chevy 350/400 LRG Journal Engine Rod Bearings .010

Hedman Hedders 69683 99-03 GM Truck Headers, Black

Hedman Hedders 63681 99-03 GM Truck Headers, Black

Hedman Hedders 69693 99-03 GM Truck Headers, Black

Hedman Hedders 62733 99-07 Chevy HTC

Hedman Hedders 62736 67-87 Chevy Truck LS Swap Headers Uncoated

Hedman Hedders 69723 99-07 GM Truck LS Headers, Long Tube, Black

Hedman Hedders 69726 99-07 GM Truck LS Headers, Long Tube, HTC

FiTech 30-99 Ultra Port EFI Standalone ECU

FiTech 30037 Nemesis 4500 Throttle Body

FiTech 30038 Nemesis 4500 Throttle Body

FiTech 30036 Nemesis 4500 Throttle Body

RLV FLOAT GAUGE