Do it yourself
Frequently asked questions about cars and motorcycles
Car tutorial (Do it yourself) Motorcycle tutorial (Do it yourself) Frequently Asked Questions

Instructions for Replacing the Water Pump

Model: Lexus IS MK 1 - Years 1998-2005
Part: Pump

The water pump is driven by the timing belt, therefore it is suggested to carry out this repair only if you have good mechanical knowledge, as a mistake could severely damage the engine. Once the radiator is removed, you can easily access the timing belt: align the timing marks and proceed with the removal of the toothed belt and the auxiliary belt. Then move on to removing the water pump located right next to the tensioner; apply thread locker on the fixing bolts of the pulley and tighten them using the nut and counter-nut technique. Clean the pump seat thoroughly and proceed with the installation of the new pump, applying the corresponding gasket and possibly gasket sealant. Complete the assembly by installing the tensioner and then the toothed belt and the auxiliary belt (due to the complexity of the operations, it is recommended to replace the belts as well).

Updated on 10 February 2026 by ScegliAuto

Video tutorial

Related tutorials

Replacing the Car Water Pump
Lexus IS (2013-2024 / MK 3) This guide shows you how to change the water pump in your car. Once you locate the position of the part, lift the car on the side of the pump, ensuri…
Timing Belt Replacement
Timing Belt Replacement
Lexus IS (1998-2005 / MK 1) Replacing the timing belt requires a certain knowledge of mechanics, as it is essential to maintain the timing references during disassembly and reas…
Replacing the Timing Belt on a Lexus IS 200
Replacing the Timing Belt on a Lexus IS 200
Lexus IS (1998-2005 / MK 1) Today, we will discover the steps to remove and replace the timing belt on a Lexus IS 200. First, open the bonnet of the vehicle and start by drainin…

Other guides you may be interested in

How to Reset the Central Locking of the Volkswagen Golf 4?

If the central locking system of the Volkswagen Golf 4 is not working, it is likely necessary to reset the system: to do this, open the driver's door and detach the side panel of the dashboard next to the steering wheel. Under this panel, you will find the fuses, including the one for the central locking, which is indicated in the manual as number 14. To reset the system, remove this fuse from its housing, then reinsert it or replace it with a new one of the same amperage: this will reset the central locking system.

Watch the video!


by ScegliAuto

More videos