Engine Assembly-Front Cover & Cooling & Related Parts fit your 2003 GMC Sierra 1500 HD 4WD

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2003 GMC Sierra 1500 HD 4WD

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Sierra 1500 Crew Cab Long Box

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Sierra 1500 Crew Cab Long Box

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Part No. & Part Description

Price & Qty.

Part No. &
Part Description

12585673
SEAL, Engine Front Cover & Crankshaft Seal, SEAL,CRANKSHAFT FRONT OIL(PART OF 10)
$45.94 $15.04
1
Add To Cart

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

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

12630223
GASKET, Engine Coolant Pump, GASKET,WATER PUMP(2 OBLONG & 1 ROUND MOUNTING HOLES, AT PUMP MANIFOLD)(PART OF 17)
- Require Quantity: 02
- Package Quantity: 1
$12.59 $2.96
1
Add To Cart

12633904
GASKET, Engine Front Cover, GASKET,ENGINE FRONT COVER(PART OF 10)
$47.74 $28.86
1
Add To Cart

BOLT, Hex
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
11588714
BOLT, HEX FLANGED HEAD,M6X1X30,22.7 THREAD,14.2 OUTSIDE DIAMETER,8.8,GMW3359, M-POINT.(ENGINE COOLANT AIR BLEED PIPE)
- 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 $1.12
10
Add To Cart

INLET, Engine Coolant Pump
12600172
INLET, WATER PUMP(INCLUDES 18,19)(INCLUDES INLET,SEAL,THERMOSTAT)
Fitting Vehicle Options: CK1,2,3(LQ4), CK1(LR4), CK1,2,3(LM7), CK1(L59), K1(LQ9)
$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ON PUMPS WITH CASTING #12562459)(INCLUDES 18,19)(INCLUDES INLET,SEAL,THERM0STAT,VALVE,RETAINER)(IF WATER PUMP HAS BEEN REPLACED BY 2004 OR NEWER PUMP, MUST ALSO USE -2004 OR NEWER INLET.)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: CK1,2,3(LQ4), CK1(LR4), CK1(L59), K1(LQ9)
$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INLET,SEAL,THERMOSTAT,VALVE,RETAINER)(INCLUDES 18,19)(INCLUDES INLET,SEAL,THERM0STAT,VALVE,RETAINER)(IF WATER PUMP HAS BEEN REPLACED BY 2004 OR NEWER PUMP, MUST ALSO USE -2004 OR NEWER INLET.)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

BOLT, Engine Coolant Pump
12551926
BOLT, WATER PUMP(M8X1.25X83)
Fitting Vehicle Options: CK1,2,3(LQ4), CK1,2(LM7), CK1(LR4), CK1(L59), K1(LQ9)
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(LQ4), CK1(LR4), CK1,2,3(LM7), CK1(L59), K1(LQ9)
$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), K1(LQ9)
$12.60
1
Add To Cart

12570528
HOSE, Engine Coolant By-Pass, HOSE,ENGINE COOLANT AIR BLEED(PART OF 5)
$25.60 $21.56
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

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), K1(LQ9)
$35.08 $18.59
1
Add To Cart
12551905
SEAL, WATER PUMP COVER(O RING)(WATER PUMP BACKPLATE)
- Fitting Vehicle Options: CK1,2,3(LQ4), CK1(LR4), CK1,2(LM7), CK1(L59), K1(LQ9)

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 $8.58
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 $8.58
1
Add To Cart

SEAL, Engine Coolant By-Pass
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 $7.57
1
Add To Cart
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 $7.57
1
Add To Cart
12551933
SEAL, ENGINE COOLANT AIR BLEED PIPE (O RING)(FLAT TYPE-TWO-HOLE SEAL-HAS METAL CARRIER)
- Fitting Vehicle Options: K1(LQ9)
- Require Quantity: 04
- Package Quantity: 1
$12.52 $7.57
1
Add To Cart

12561243
COVER, Engine Front Cover, COVER,ENGINE FRONT(INCLUDES 9,11,13)(INCLUDES COVER,SEAL,GASKET,BOLT)
- Replaced By: 12633906
$175.87 $101.05
1
Add To Cart

PUMP KIT, Engine Coolant
12703898
PUMP KIT, WATER(INCLUDES 12,21)(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)
- Fitting Vehicle Options: CK1,2,3(LM7), CK1,2,3(LQ4), CK1(L59), K1(LQ9)
$349.50 $176.13
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

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

25526358
CLAMP, SPRG BAND,14.2MM,9/16 OUTSIDE DIAMETER HOSE,PHOSPHATE ORGANIC(PART OF 5)
- Require Quantity: 02
- Package Quantity: 1
$8.19 $4.95
1
Add To Cart

Genuine GM Parts, the Right Choice

GMPartsGiant.com offers the wholesale prices for genuine 2003 GMC Sierra 1500 HD 4WD 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.