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Timing Belt Replacement

Model: Lexus IS MK 1 - Years 1998-2005
Part: Timing belt

Replacing the timing belt requires a certain knowledge of mechanics, as it is essential to maintain the timing references during disassembly and reassembly. In the case of the vehicle in question, the toothed belt also drives the water pump, so it is advisable to replace this as well. Start by draining the coolant, removing the timing belt covers, the radiator assembly, the auxiliary belt, and the crankshaft pulley. Then align the timing references and proceed with the removal of the tensioner and the water pump; install the new one with the respective gaskets and also replace the tensioner, idler bearing, and thermostat; apply the new belt and reinstall everything previously removed, also replacing the auxiliary belt.

Updated on 10 February 2026 by ScegliAuto

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Instructions for Replacing the Water Pump
Instructions for Replacing the Water Pump
Lexus IS (1998-2005 / MK 1) 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 mist…
V-Belt Replacement Instructions
Lexus IS (2013-2024 / MK 3) Replacing the V-belt or auxiliary belt is quite straightforward. It is important to note the routing of the belt around the various pulleys before re…
Thermostat Replacement
Lexus IS (2013-2024 / MK 3) The thermostat regulates the exchange of hot engine coolant with cooler coolant from the radiator: at intervals determined by the temperature of the …

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How to Replace the Timing Belt on the BMW X3

Unlatch and lift the hood, then you will need to remove all the parts above the area where you will be working. As shown in the video, you can remove the screws to take off the upper panels. Now you need to remove the air filter cover from the engine. In any case, you will need to remove all obstructing parts until you reach the belt. In the diagram, you can see which pulley acts as the tensioner, so loosen it to remove the belt. Once the tension is off the belt, you can take it out and replace it without issues. Retrace the steps in reverse for reassembly of the various components.

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