How to Change the Serpentine Belt on Your Lexus LS400 and SC400 V8

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This is one of the simplest tasks you can do at home and it will about 30 minutes or less. 

A Serpentine belt is very important.  It powers the alternator, mechanical fan, A/C compressor and Power steering.  I have an incident that my serpentine belt broke and I lost all power.  Alternator was dead, power steering wasn’t working and so on.  I recommend you should chance this belt once every 50-60k miles. 

There are many aftermarket serpentine belt u can get.  One of my all time favorite would be the original Lexus serpentine belt.  The cost is slightly higher, but will worth the money.  The second trust worthy brand would be Gates.  Gates make great quality belts for competitive price.  Here are some aftermarket serpentine belt suppliers.

Gates part number is K060882
ACDELCO part number is CK882
Kragen Brand 6PK22250

The pictures below are very self explanatory.  I tried to give u details explanation.  Right before you take out the belt.  Its belt to use your left on the socket to release the tensor and use your right hand to remove the belt.  I also included a serpentine diagram.  Good luck.


Do you have any questions? If so, please head over to the forums to get a quick answer or share your experience!

This is a freelance site with no support by huge companies.  I have been doing most of the R&D and technical write-ups by myself with my personal money and literally thousands of hours of my time.  I have taken extra steps to demonstrate in details how things are done.  Currently I am one of the few people doing Lexus V8 research and performance enhancement.  This effort comes from my personal love for this wonderful engine.  Most of the modifications are from trial and error. There's no cookbook for 1UZFE mods and its unknown territory for much of supercharger performance.  The parts, labor, web development and site hosting are 100% paid from my personal hobby money.  If you feel my efforts help you in any form, please do not hesitate to donate any amount of money to support this site. You have no idea how much I and the entire Lexus and Toyota community appreciate it!

2 thoughts on “How to Change the Serpentine Belt on Your Lexus LS400 and SC400 V8”

  1. This is the best serpentine belt guide I’ve ever seen.

    Thank you so much for making this possible for all of us 🙂

  2. Thank you very much for all you are sharing.
    I’m living in France and this will help me to change my belts on my sc400


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