Engine Assembly-Front Cover & Cooling & Related Parts fit your 2003 Chevrolet Silverado 1500 HD 2WD

Currently shopping for

2003 Chevrolet Silverado 1500 HD 2WD

Change Vehicle

Categories Close X

Currently selected

Engine

Other Categories

Body Mounting, Air Conditioning, Audio/Entertainment

Brakes

Brakes, Rear Axle, Propeller Shaft, Wheels, Tires

Cab And Body Structure, Mirrors, Doors, Trim, Seat Belts, Wipers

Cooling System, Grille, Oil System

Frames, Springs, Shocks, Bumpers, Fascias

Front Axle, Front Suspension, Steering

Front End Sheet Metal, Heater

Fuel System, Exhaust, Emission System

Maintenance Parts, Fluids, Capacities, Electrical Connectors

Rear Body Structure, Moldings & Trim, Cargo Stowage

Starter, Generator, Ignition, Electrical, Lamps

Transmission - Automatic

Transmission - Manual

Parts Questions

Sort by:

Recommended

Part No. & Part Description

Price & Qty.

Part No. &
Part Description

SEAL, Engine Front Cover & Crankshaft Seal
12585673
SEAL, CRANKSHAFT FRONT OIL(PART OF 10)
Fitting Vehicle Options: CK1,2,3(LQ4), CK1,2(LM7), CK1(LR4), CK1(L59)
$45.94 $23.15
1
Add To Cart
10128316
SEAL, CRANKSHAFT FRONT OIL(61.5MM OUTSIDE DIAMETER, W/ PART NUMBER STAMPING)(PART OF 160)
- Fitting Vehicle Options: CK1(LU3)
$37.60 $19.93
1
Add To Cart

12608814
SENSOR, Computer Control Sensors, SENSOR,ENGINE COOLANT TEMPERATURE(2-WAY MALE)(MATING CONNECT USE 88987993)(1.150)
$57.90 $30.69
1
Add To Cart

12608814
SENSOR, Coolant Temperature (Engine Unit), SENSOR,ENGINE COOLANT TEMPERATURE(2-WAY MALE)(MATING CONNECT USE 88987993)
$57.90 $30.69
1
Add To Cart

GASKET, Engine Coolant Pump
12630223
GASKET, WATER PUMP(2 OBLONG & 1 ROUND MOUNTING HOLES, AT PUMP MANIFOLD)(PART OF 17)
Fitting Vehicle Options: CK1(LR4), CK1,2(LM7), CK1,2,3(LQ4), CK1(L59)
Require Quantity: 02
Package Quantity: 1
$12.59 $6.41
1
Add To Cart
3754587
GASKET, WATER PUMP(PART OF 300)
- Fitting Vehicle Options: CK1(LU3)
- Require Quantity: 02
- Package Quantity: 20
$4.70 $2.59
20
Add To Cart
12681600
GASKET, WATER PUMP COVER(PART OF 300)
- Fitting Vehicle Options: CK1(LU3)
$8.38 $4.69
1
Add To Cart

12633904
GASKET, Engine Front Cover, GASKET,ENGINE FRONT COVER(PART OF 10)
$47.74 $30.36
1
Add To Cart

BOLT, HEXAGON
11588714
BOLT, HEX FLANGED HEAD,M6X1X30,22.7 THREAD,14.2 OUTSIDE DIAMETER,8.8,GMW3359, M-POINT.
Require Quantity: 04
Package Quantity: 1
$9.71 $6.18
1
Add To Cart
11515758
BOLT, HEX FLANGED HEAD,M8X1.25X30,28THD,18 O.D.,MACHINE POINT,10.9,7114M(PART OF 10)
- Require Quantity: 12
- Package Quantity: 10
$1.86 $1.18
10
Add To Cart
11508476
BOLT, M8X1.25X25 9.8(DISTRIBUTOR CLA)
$3.55 $2.25
10
Add To Cart
11515756
BOLT, HEX FLANGED HEAD, M8X1.25X20,17THD,18 O.D.,10.9,7114M(FAN & WATER PUMP PULLEY)
- Require Quantity: 04
- Package Quantity: 10
$7.50 $4.76
10
Add To Cart
9442895
BOLT, HEXAGON, .250 -20 X .5(PART OF 300)
- Require Quantity: 06
- Package Quantity: 1
$8.81 $5.73
1
Add To Cart

INLET, Engine Coolant Pump
12600172
INLET, WATER PUMP(INCLUDES 18,19)(INCLUDES INLET,SEAL,THERMOSTAT)
Fitting Vehicle Options: CK1,2,3(LM7), CK1,2,3(LQ4), CK1(LR4), CK1(L59)
$82.23 $39.13
1
Add To Cart
12571261
INLET, WATER PUMP(USED ON PUMPS WITH CASTING #12562459)(INCLUDES 18,19)(INCLUDES INLET,SEAL,THERM0STAT,VALVE,RETAINER)(IF WATER PUMP HAS BEEN REPLACED BY 2004 OR NEWER PUMP, MUST ALSO USE -2004 OR NEWER INLET.)
- Fitting Vehicle Options: CK1(LR4), CK1,2,3(LQ4), CK1(L59)
$78.51 $37.37
1
Add To Cart
12571261
INLET, WATER PUMP(USED ON PUMPS WITH CASTING #12562459, INCLUDES INLET,SEAL,THERMOSTAT,VALVE,RETAINER)(INCLUDES 18,19)(INCLUDES INLET,SEAL,THERM0STAT,VALVE,RETAINER)(IF WATER PUMP HAS BEEN REPLACED BY 2004 OR NEWER PUMP, MUST ALSO USE -2004 OR NEWER INLET.)
- Fitting Vehicle Options: CK1,2(LM7)
$78.51 $37.37
1
Add To Cart

12596851
SENSOR, Distributor (also Knock Sensor), SENSOR,CRANKSHAFT POSITION(INCLUDES 742)(MATING CONNECT W/LEADS USE 13585316)
$153.20 $73.79
1
Add To Cart

89017259
COVER KIT, Engine Front Cover, COVER KIT,ENGINE FRONT(INCLUDES 133,159,522,903,904)(W/SEAL,GROMMET,BOLTS)(NOTE:COVER HAS BEAD OF SEALANT PRE-APPLIED.IF BEAD OF SEALANT IS DAMAGED,A NEW COVER IS REQUIRED.)
$150.84 $86.67
1
Add To Cart

12550053
PULLEY, Fan and Coolant Pump, PULLEY,FAN & WATER PUMP(148.4MM)(HAS 1.8" OPENING IN CENTER OF HUB)
$21.00 $11.71
1
Add To Cart

10476885
SEAL, Distributor (also Knock Sensor), SEAL,CRANKSHAFT POSITION SENSOR(O RING)(PART OF 743)
$5.56 $3.10
5
Add To Cart

12551507
SEAL, Engine Coolant Thermostat Housing, SEAL,ENGINE COOLANT THERMOSTAT(O RING)(PART OF 307)
$10.84 $5.75
1
Add To Cart

12632948
THERMOSTAT, Engine Coolant Temperature, THERMOSTAT,ENGINE COOLANT(W/SEAL)(INCLUDES 308)
$52.70 $27.93
1
Add To Cart

BOLT, Engine Coolant Pump
12551926
BOLT, WATER PUMP(M8X1.25X83)
Fitting Vehicle Options: CK1,2,3(LQ4), CK1(LR4), CK1,2(LM7), CK1(L59)
Require Quantity: 06
Package Quantity: 1
$10.10 $6.58
1
Add To Cart
11516480
BOLT, WATER PUMP COVER(M6X1X25-10MM SOCKET)
- Fitting Vehicle Options: CK1,2,3(LM7), CK1,2,3(LQ4), CK1(LR4), CK1(L59)
$12.60
1
Add To Cart
11516480
BOLT, WATER PUMP INLET(PART OF 17)(M6X1X25-10MM SOCKET)
- Fitting Vehicle Options: CK1,2,3(LQ4), CK1(L59)
- Require Quantity: 02
- Package Quantity: 1
$12.60
1
Add To Cart
11516480
BOLT, WATER PUMP INLET(PART OF 17)(M6X1X25-10MM SOCKET)
- Fitting Vehicle Options: CK1(LR4), CK1,2(LM7)
$12.60
1
Add To Cart
12552096
BOLT, WATER PUMP(3/8-16 X 2 1/8)
- Fitting Vehicle Options: CK1(LU3)
- Require Quantity: 04
- Package Quantity: 10
$4.27 $2.71
10
Add To Cart

HOSE, Engine Coolant By-Pass
12570528
HOSE, ENGINE COOLANT AIR BLEED(PART OF 5)
Fitting Vehicle Options: CK1(LR4), CK1,2(LM7), CK1,2,3(LQ4), CK1(L59)
$25.60 $23.72
1
Add To Cart
10242185
HOSE, WATER PUMP INLET
- Fitting Vehicle Options: CK1(LU3)
$15.08 $10.08
1
Add To Cart

12602540
COVER, Engine Coolant By-Pass, COVER,ENGINE COOLANT AIR BLEED PIPE HOLE(INCLUDES 6)(INCLUDE SEALS)
- Require Quantity: 02
- Package Quantity: 1
$38.06 $21.22
1
Add To Cart

PUMP KIT, Engine Coolant
89060527
PUMP KIT, WATER(W/GASKET)(INCLUDES 303,900-902)
Fitting Vehicle Options: CK1(LU3)
$429.11 $216.27
1
Add To Cart
12703898
PUMP KIT, WATER(INCLUDES 12,21)(USE TOGETHER WITH GASKET 12630223 QTY 1)(TOGETHER WITH 12600172 INLET(QTY)1 & 11516480 BOLT(2))(WHEN USING IN 2000 APPLICATIONS,USE 2004 THERMOSTAT FOR SERVICE)
- Fitting Vehicle Options: CK1(LR4)
$349.50 $176.13
1
Add To Cart
12703898
PUMP KIT, WATER(INCLUDES 12,21)(USE TOGETHER WITH GASKET 12630223 QTY 1)(TOGETHER WITH 12600172 INLET(QTY)1 & 11516480 BOLT(2))
- Fitting Vehicle Options: CK1,2,3(LM7), CK1,2,3(LQ4), CK1(L59)
$349.50 $176.13
1
Add To Cart

SEAL, Engine Coolant Pump
12561155
SEAL, WATER PUMP(ENGINE COOLANT THERMOSTAT HSNG-BETWEEN INLET)(PART OF 20)
Fitting Vehicle Options: CK1,2,3(LQ4), CK1,2(LM7), CK1(LR4), CK1,2(L59)
$35.08 $18.59
1
Add To Cart
12551905
SEAL, WATER PUMP COVER(O RING)(WATER PUMP BACKPLATE)
- Fitting Vehicle Options: CK1(LR4), CK1,2(LM7), CK1,2,3(LQ4), CK1(L59)

12554033
STUD, Engine Coolant, STUD,WATER OUTLET(3/8X16/8MX1.25-6)
- Require Quantity: 02
- Package Quantity: 1
$7.38 $4.69
1
Add To Cart

10213294
GROMMET, Engine Front Cover, GROMMET,ENGINE FRONT COVER(PART OF 160)
- Require Quantity: 06
- Package Quantity: 1
$11.01 $6.99
1
Add To Cart

PLUG, Engine Oil Distribution

11588949
PLUG, M16X1.5X14, 24 OUTSIDE DIAMETER, SAE 1010 STEEL, GMW3044, W/ ALUMINUM WASHER(ENGINE BLOCK COOLANT DRAIN HOLE)(8.973)
$14.20 $9.02
1
Add To Cart
11588949
PLUG, M16X1.5X14, 24 OUTSIDE DIAMETER, SAE 1010 STEEL, GMW3044, W/ ALUMINUM WASHER(ENGINE BLOCK COOLANT DRAIN HOLE)(8.973)
- Require Quantity: 02
- Package Quantity: 1
$14.20 $9.02
1
Add To Cart

SEAL, Engine Coolant By-Pass
12551933
SEAL, ENGINE COOLANT AIR BLEED PIPE (O RING)(FLAT TYPE-TWO-HOLE SEAL)(PART OF 4,5)
Fitting Vehicle Options: CK1,2(LM7)
Require Quantity: 04
Package Quantity: 1
$12.52 $9.38
1
Add To Cart
12551933
SEAL, ENGINE COOLANT AIR BLEED PIPE (O RING)(FLAT TYPE-TWO-HOLE SEAL-HAS METAL CARRIER)(PART OF 4,5)
- Fitting Vehicle Options: CK1,2,3(LQ4), CK1(LR4), CK1(L59)
- Require Quantity: 04
- Package Quantity: 1
$12.52 $9.38
1
Add To Cart

BOLT, Engine Front Cover
10213293
BOLT, ENGINE FRONT COVER(PART OF 160)(1/4-20X.025)(HEX WASHER HEAD)
Require Quantity: 04
Package Quantity: 1
$7.38 $4.69
1
Add To Cart
12551135
BOLT, ENGINE FRONT COVER(PART OF 160)
- Require Quantity: 02
- Package Quantity: 1

12557563
OUTLET, Engine Coolant, OUTLET,WATER
$116.64 $55.52
1
Add To Cart

12561663
PLUG, Engine Block, PLUG,ENGINE BLOCK COOLANT DRAIN HOLE(M28X1.25X12.4, BRASS)
- Location: Driver Side
$21.45 $12.96
1
Add To Cart

12633906
COVER, Engine Front Cover, COVER,ENGINE FRONT(INCLUDES 9,11,13)
$175.87 $101.05
1
Add To Cart

12604711
PIPE, Engine Coolant By-Pass, PIPE,ENGINE COOLANT AIR BLEED(INCLUDES 2,3,6)

11570383
CLAMP, SPRINGBAND,24 NOMINAL DIAMETER, 15 THICK, STEEL, GMW14083(WATER PUMP INLET HOSE)
- Require Quantity: 02
- Package Quantity: 1
$41.38 $20.85
1
Add To Cart

25526358
CLAMP, SPRG BAND,14.2MM,9/16 OUTSIDE DIAMETER HOSE,PHOSPHATE ORGANIC(PART OF 5)
- Require Quantity: 02
- Package Quantity: 1
$8.19 $5.21
1
Add To Cart

Genuine GM Parts, the Right Choice

GMPartsGiant.com offers the wholesale prices for genuine 2003 Chevrolet Silverado 1500 HD 2WD parts. Parts like Engine Assembly-Front Cover & Cooling & Related Parts are shipped directly from authorized GM dealers and backed by the manufacturer's warranty. Parts fit for the following vehicle options. Engine: 6 Cyl 4.3L, 8 Cyl 4.8L, 8 Cyl 5.3L, 8 Cyl 5.3L Flex, 8 Cyl 6.0L. Model Code: 1500 CREW CAB LONG BOX, 1500 EXTENDED CAB LONG BOX, 1500 EXTENDED CAB STANDARD BOX, 1500 REGULAR CAB LONG BOX, 1500 REGULAR CAB STANDARD BOX.