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Chevrolet 12703898 Water Pump

1999-2006 Chevrolet

Customer Questions & Expert Answers (9)
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12703898 GM Water Pump Illustration 1 of 1
  • Part Description
    Pump Kit, Engine Coolant
  • Replaces
    12681184, 12686763, 19256261
  • Manufacturer
    General Motors
Make sure this part fits
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  • Related Parts
  • Specifications
  • Fitment
  • Q&A

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  • Product Specifications

    BrandGenuine Chevrolet
    Manufacturer Part Number12703898
    Part DescriptionWater Pump; Pump Kit, Engine Coolant
    Item Dimensions21.5 x 16.1 x 9.4 inches
    Item Weight11.50 Pounds
    ConditionNew
    Fitment TypeDirect Replacement
    Replaces12681184, 12686763, 19256261
    ManufacturerGeneral Motors
    SKU12703898
    WarrantyThis genuine GM part is guaranteed by GM's factory warranty.
    Shipping & ReturnShipping Policy Return Policy
    Warning: California's Proposition 65

  • Vehicle Fitment

    Year Make Model Engine Important vehicle option details
    2002-2006 Chevrolet Avalanche8 Cyl 5.3L, 8 Cyl 5.3L Flex1/2 TON
    2003-2006 Chevrolet Express8 Cyl 4.8L, 8 Cyl 5.3L, 8 Cyl 6.0L1 TON CARGO EXPRESS, 1 TON COMMERCIAL/RV CUTAWAY, 1 TON PASSENGER, 1/2 TON CARGO EXPRESS, 1/2 TON PASSENGER EXPRESS, 3/4 TON CARGO EXPRESS, 3/4 TON PASSENGER EXPRESS
    1999-2006 Chevrolet Silverado8 Cyl 4.8L, 8 Cyl 5.3L, 8 Cyl 5.3L Flex, 8 Cyl 6.0L1500 CREW CAB LONG BOX, 1500 CREW CAB STANDARD BOX, 1500 EXTENDED CAB LONG BOX, 1500 EXTENDED CAB SHORT BOX, 1500 EXTENDED CAB STANDARD BOX, 1500 REGULAR CAB LONG BOX, 1500 REGULAR CAB STANDARD BOX, 2500 CREW CAB LONG BOX, 2500 CREW CAB STANDARD BOX, 2500 EXTENDED CAB LONG BOX, 2500 EXTENDED CAB STANDARD BOX, 2500 REGULAR CAB, 3500 CHASSIS EXTENDED CAB 161.5, 3500 CHASSIS REGULAR CAB 137.0, 3500 CHASSIS REGULAR CAB 161.5, 3500 CREW CAB, 3500 EXTENDED CAB, 3500 REGULAR CAB
    2004-2006 Chevrolet SSR8 Cyl 5.3L, 8 Cyl 6.0LSPORT TRUCK
    2000-2006 Chevrolet Suburban8 Cyl 5.3L, 8 Cyl 5.3L Flex, 8 Cyl 6.0L1/2 TON, 1500 CREW CAB, 1500 CREW CAB LONG BOX, 1500 CREW CAB STANDARD BOX, 1500 EXTENDED CAB LONG BOX, 1500 EXTENDED CAB STANDARD BOX, 1500 REGULAR CAB LONG BOX, 1500 REGULAR CAB STANDARD BOX, 2500 CREW CAB LONG BOX, 2500 CREW CAB STANDARD BOX, 2500 EXTENDED CAB LONG BOX, 2500 EXTENDED CAB STANDARD BOX, 2500 REGULAR CAB, 3/4 TON, 3500 CHASSIS EXTENDED CAB 161.5, 3500 CHASSIS EXTENDED CAB 185.5, 3500 CHASSIS REGULAR CAB 137.0, 3500 CHASSIS REGULAR CAB 161.5, 3500 CREW CAB, 3500 EXTENDED CAB, 3500 REGULAR CAB, 4 DOOR 1/2 TON, CLASSIC 1500 CREW CAB LONG BOX, CLASSIC 1500 EXTENDED CAB LONG BOX, CLASSIC 1500 EXTENDED CAB STANDARD BOX, CLASSIC 1500 REGULAR CAB LONG BOX, CLASSIC 1500 REGULAR CAB STANDARD BOX, CLASSIC 2500 CREW CAB LONG BOX, CLASSIC 2500 CREW CAB STANDARD BOX, CLASSIC 2500 EXTENDED CAB LONG BOX, CLASSIC 2500 EXTENDED CAB STANDARD BOX, CLASSIC 2500 REGULAR CAB, CLASSIC 3500 CHASSIS EXTENDED CAB 161.5, CLASSIC 3500 CREW CAB, CLASSIC 3500 EXTENDED CAB, CLASSIC 3500 REGULAR CAB, EXT 1/2 TON, EXT 3/4 TON, XL 1/2 TON, XL 3/4 TON, YUKON/DENALI
    2000-2006 Chevrolet Tahoe8 Cyl 4.8L, 8 Cyl 5.3L, 8 Cyl 5.3L Flex4 DOOR 1/2 TON
    2003-2006 Chevrolet Trailblazer8 Cyl 5.3L, 8 Cyl 6.0L4 DOOR, 4 DOOR EXT

  • Customer Questions & Expert Answers

    Q:
    I'm wondering if this is complete and correct part for my vehicle.
    A:
    You can Select Your Vehicle to check if 12703898 fits your vehicle.
    Posted and answered by GM Parts Specialist Julian
    Q:
    How to check and replace a Water Pump on Chevrolet Trailblazer? Posted by Reanna H.
    A:
    The primary water pump is a critical component of the engine and its malfunction can cause overheating and extensive damage. One can observe for coolant leakage from the weep hole or listen for a high-pitched squealing sound indicative of bearing failure to ascertain that the water pump is in good condition. You can check whether there are excessive bearings wearing out by trying to lift up and down or left and right the pulley of a water pump. If the backside impeller fins on the pump are decayed, then you might have to replace it. To remove a water pump, disconnect the battery cable, drain coolant, remove various parts such as air intake duct, radiator shroud and fan clutch assembly. Next take off pulley of water pump along with bolts and clean surfaces which are used for sealing it properly. In fitting this; apply new gasket using RTV sealant while other components including pulley should be available again. Fill cooling system with fresh coolant and bleed it while checking engine for any leaks of coolant. After removing different components and disconnecting heater hoses as well as connector you will go through steps that were discussed earlier earlier performing an installation process that started in step one above before refilling cooling system later on check whether there is any leak in it or not like what was done previously.
    You can Select Your Vehicle to see complete installation and repair tips.
    Answered by GM Parts Specialist Nicholas / Jun 17, 2026
    Q:
    Does this pump work with both available inlets 12600172 and 12571261? If so,which inlet do i choose for my 2001 suburban?Thanks! Posted by Ryan W. / 2001 Light Truck Suburban / Yukon XL - 06 Bodystyle (4WD / AWD)
    A:
    12571261 INLET, W/PMP (USED ON PUMPS WITH CASTING #12562459)(IF WATER PUMP HAS BEEN REPLACED BY 2004 OR NEWER PUMP, MUST ALSO USE -2004 OR NEWER INLET.) PER GM......
    Answered by GM Parts Specialist Bob / Jun 26, 2025
    Q:
    Does this 12703898 kit include two 12630223 gaskets and 12600172 Inlet Assembly? Posted by Tommie H. / 2001 Light Truck Silverado / Sierra - 03, 43, 53 Bodystyle (2WD)(New Model)
    A:
    127063898 does not include the gaskets or the inlet.
    Answered by GM Parts Specialist Syed / Oct 15, 2024
    Q:
    Does this 12703898 Water Pump kit include two 12630223 gaskets and 12600172 Inlet Assembly? Posted by Courtney M. / 2001 Light Truck Silverado / Sierra - 03, 43, 53 Bodystyle (2WD)(New Model)
    A:
    12703898 does not include the gaskets or the inlet.
    Answered by GM Parts Specialist Xavier / Oct 15, 2024
    Q:
    Does this come with all parts to complete instalation? Posted by Daisy S. / 2002 Light Truck Silverado / Sierra - 03, 43, 53 Bodystyle (4WD / AWD)
    A:
    YES......
    Answered by GM Parts Specialist Xavier / Oct 14, 2024
    Q:
    Does the water pump include the two gaskets and the thermostat and thermostat inlet? Does the thermostat inlet include the two screws? Thank you Posted by Myles O. / 2004 Light Truck Suburban / Yukon XL / Escalade ESV - 06 Bodystyle (4WD / AWD)
    A:
    Hello, Both gaskets are included, however the thermostat is separate. The inlet will include the therm - p# 12600172. The screws for the inlet are sold separately, they are p# 11516480 and you will require a quantity of 2
    Answered by GM Parts Specialist Syed / Apr 22, 2024
    Q:
    Does this pump work with the 012600172 inlet/thermostat? Posted by John S. / 2000 Light Truck Silverado / Sierra - 03, 53 Bodystyle (2WD)(New Model)
    A:
    Hello, Yes it does
    Answered by GM Parts Specialist Jose / Feb 06, 2024
    Q:
    Does the pump come with the gaskets? Posted by Korey F. / 2005 Light Truck Hummer H2
    A:
    12703898 PUMP KIT, WAT (USE T/W GASKET 12630223 QTY 1) (T/W 12600172 INLET (QTY)1 & 11516480 BOLT (2)
    Answered by GM Parts Specialist Raul / Jun 01, 2023

Genuine GM Part 12703898, the Right Choice

To ensure reliability, purchase GM part # 12703898 Water Pump. It is sometimes referred to as Chevrolet Water Pump. Directly from GM, genuine parts are superb with regards to quality, longevity, and fit. Every single part passed stringent quality testing, so you can be sure that it's safe, durable, and built to perform like your original parts. This part fits specific Chevrolet Express, Silverado, Tahoe models.

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