Timing chain - Infiniti FX Forum : FX35, FX45 and FX50 Forums Sep 30, 2009Do i need to check for the timing belt or it's a chain and there is no need to replace? Thx In order to be able to post messages on the Infiniti FX Forum : FX35, FX45 and FX50 Forums forums, you must first register. Please enter your desired user name, your email address and other required details in the form below.Author: Corvettedan22 Infiniti Timing Belt And Timing Chain List (2003 – 2017 Does An Infiniti Have A Timing Belt (Cambelt) Or A Chain? Here is a list of timing belts and timing chains for a Infiniti. Reference the model year with the corresponding engine to see if your car has a belt or a chain.