Contact Us: Live Chat or 1-888-726-6993
My Garage
My Account
My Cart
Make sure this part fits your vehicle

Nissan 21010-4S126 Pump Assy-Water

2002-2004 Nissan 210104S126

Nissan 21010-4S126 Pump Assy-Water
  • Part Description
    Pump Assy-Water
  • Lookup Code
    21010
  • Replaced By
    (MultiSupersession)
  • Manufacturer
    Nissan
  • Manufacturer's Notes
    This part is discontinued.
Customer Questions & Answers
  • Product Specifications

    BrandGenuine Nissan
    Lookup Code21010
    Manufacturer Part Number21010-4S126
    Part DescriptionPump Assy-Water
    Other NamesWater Pump
    ConditionNew
    Fitment TypeDirect Replacement
    ManufacturerNissan
    SKU21010-4S126
    WarrantyThis genuine Nissan part is guaranteed by Nissan's factory warranty.
    Shipping & ReturnShipping Policy Return Policy
    Warning: California’s Proposition 65
  • Vehicle Fitment

    Year Make Model Trim & Engine Important vehicle option details
    2002-2004 Nissan FrontierSC, SE, XE|6 Cyl 3.3LVG33E
    2002-2004 Nissan XterraSE, XE|6 Cyl 3.3LVG33E, VG33ER

Customer Questions & Answers

Q:
Does this part fit my vehicle? Posted by NissanPartsDeal Specialist
A:
You can Select Your Vehicle to check if 21010-4S126 fits your vehicle.
Posted by NissanPartsDeal Specialist
Q:
How to inspect, diagnose and replace a water pump in a Nissan Xterra's engine cooling system? Posted by Customer
A:
A failure in the water pump can cause serious engine damage due to overheating. There are two ways to check the operation of the water pump while it's installed on the engine. If defective, it should be replaced with a new or rebuilt unit. Water pumps have weep holes located on their underside. Coolant will leak from this hole if the pump seal fails. On 3.3L V6 engines, use a flashlight and a small mirror to find the hole on the water pump from underneath. On 3.5L V6 engines, the weep hole directs coolant out between the timing chain cover and the engine block. If the water pump shaft bearings fail, a howling sound might be heard. Shaft wear on four-cylinder and 3.3L V6 engines can be detected by rocking the water pump pulley with the drive belt removed. On 3.5L V6 engines, rock the water pump sprocket after relieving the main timing chain tension. Sometimes impellers corrode, affecting cooling efficiency. For replacement, disconnect the battery's negative terminal, drain the coolant, remove the drive belts, engine cooling fan, water pump/fan pulley, upper radiator hose, fan shroud, and, on 3.3L V6 engines, the idler pulley bracket, crankshaft pulley, and timing belt covers. On 3.5L V6, remove the drain plug, timing chain tensioner cover, and water pump cover. Rotate the crankshaft 20 degrees counterclockwise for 3.5L V6. Remove the water pump and clean bolt threads and threaded holes. Compare pumps, clean mating surfaces with lacquer thinner or acetone, and apply sealant. Attach the new pump finger tight, then tighten bolts in 1/4-turn increments. On 3.5L V6, rotate the crankshaft 20 degrees clockwise and reinstall all removed parts. Wait an hour, then refill and bleed the cooling system. Run the engine to check for leaks and proper operation. Timing chain noise on 3.5L V6 engines after this procedure is normal until the air has bled out. Start the engine and let it run at 3,000rpm until the noise subsides.
Posted by NissanPartsDeal Specialist
Q:
What is the purpose of the weep hole in a water pump for the 1998 Nissan Frontier? Posted by Customer
A:
The weep hole in a water pump serves as an indicator. It directs coolant out if the pump seal is compromised, alerting you to a potential issue.
Posted by NissanPartsDeal Specialist
See expert answers on similar Water Pump
If you have any questions about this product, please don't hesitate to ask us. We will be happy to help you!

Genuine Nissan Part 21010-4S126, the Right Choice

To ensure reliability, purchase Nissan part # 21010-4S126 Pump Assy-Water. It is sometimes referred to as Nissan Water Pump. OEM parts are the #1 choice in terms of quality. Crafted by Nissan, they follow rigorous factory specs and go through the demanding quality control processes during manufacturing. This part fits 2002-2004 Nissan Frontier, 2002-2004 Nissan Xterra.

NissanPartsDeal.com is a leading supplier of genuine Nissan parts and accessories such as Nissan 210104S126 Pump Assy-Water. Welcome to our vast selection of competitively-priced genuine Nissan parts available online. Each OEM Nissan part we provide is backed by a manufacturer's warranty and is subject to a stress-free return policy. Place your order now and receive your parts quickly, shipped directly to your doorstep.

Why choose Nissan Parts Deal

  • Dedicated Service

    Your complete satisfaction is our #1 goal

  • Lowest Prices

    Best deals on genuine OE parts from dealerships

  • Fast Delivery

    Orders are processed and delivered promptly