Compression Rods replaced - new part info!
#1
Join Date: Mar 2003
Location: Alexandria, VA (metro DC)
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[from OP: PLEASE READ THIS ENTIRE THREAD. My orig post has some errors!]
After enduring for way too long the wretched clunking and creaking noise commonly attributed to front end compression rods and bushings, I finally took my 2004 to another dealer in town (Tysons) just before the warranty ended. It only took two trips, but they agreed to replace the parts. Hurray! Noise problem solved! There is blessed quiet going over bumps and aprons.
Here's the new info. The part numbers for the compression rods seems to have changed yet again, and my service adviser says they are now made of steel, and no longer of aluminum. I'm not totally convinced of this, but the rods are indeed painted black, and are not the former shiny aluminum color. See the pics here to judge for yourself. Why steel, if that is in fact been changed? Aluminum is very stiff, but is more susceptible to fatigue and cracking, so that may have been contributing to the noise. Most of us were convinced that the noise comes from worn bushings, and this may still be partially true, but...speculate yourself.
The "new" latest part numbers are:
ROD COMPL-COMPRESSIO-54468-AC71F (Qty 1)
COMPRESSION ROD, FRO-54469-AC71F (Qty 1)
[OP: Per info from Jason@Riverside, this part numbers are for the G35X, not the G35 RWD.]
In addition, they required:
BOLT-STOPPER-40038-AQ301 (Qty 2)
After enduring for way too long the wretched clunking and creaking noise commonly attributed to front end compression rods and bushings, I finally took my 2004 to another dealer in town (Tysons) just before the warranty ended. It only took two trips, but they agreed to replace the parts. Hurray! Noise problem solved! There is blessed quiet going over bumps and aprons.
![Biggthumpup](https://g35driver.com/forums/images/smilies/biggthumpup.gif)
Here's the new info. The part numbers for the compression rods seems to have changed yet again, and my service adviser says they are now made of steel, and no longer of aluminum. I'm not totally convinced of this, but the rods are indeed painted black, and are not the former shiny aluminum color. See the pics here to judge for yourself. Why steel, if that is in fact been changed? Aluminum is very stiff, but is more susceptible to fatigue and cracking, so that may have been contributing to the noise. Most of us were convinced that the noise comes from worn bushings, and this may still be partially true, but...speculate yourself.
The "new" latest part numbers are:
ROD COMPL-COMPRESSIO-54468-AC71F (Qty 1)
COMPRESSION ROD, FRO-54469-AC71F (Qty 1)
[OP: Per info from Jason@Riverside, this part numbers are for the G35X, not the G35 RWD.]
In addition, they required:
BOLT-STOPPER-40038-AQ301 (Qty 2)
Last edited by Noremac; 01-19-2008 at 04:09 PM. Reason: corrected title information
#3
Interesting. I just replaced the compression rods on my coupe and although they were revised, they still look like the older ones. Obviously, a difference between coupe and sedan. Additionally, the turn radius stops are integrated in the rods I just installed. Anyway, congrats on being noise free again.
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#10
Originally Posted by Dudefish
Looks like cast iron to me. I hope the non-x parts are still aluminum.
If you look at his "BLACK" arms that were installed, where the stopper bolt is, you can see what looks like nice shiny aluminum.
![Name: v35xcompression.jpg
Views: 1054
Size: 71.3 KB](https://g35driver.com/forums/attachments/brakes-suspension/248336d1502131791-compression-rods-replaced-new-part-info-v35xcompression.jpg)
Last edited by Jason@Riverside; 01-18-2008 at 12:58 PM.
#12
#14
Here is an image of the parts system pulling up the CORRECT part numbers from your VIN number...
![Name: 108282public.jpg
Views: 435
Size: 77.4 KB](https://g35driver.com/forums/attachments/brakes-suspension/248337d1502131791-compression-rods-replaced-new-part-info-108282public.jpg)
This shows the most recent part numbers as 54468/54469-AC70A
When that part number is put into the parts system it goes to a service file which calls for the bolt and a AC70F number...
Seen here...
As you can see from the date on my parts disc, 1, 1, 08. it is the most up to date INFINITI has to offer...
![Name: v35compressionfile.jpg
Views: 389
Size: 72.7 KB](https://g35driver.com/forums/attachments/brakes-suspension/248338d1502131791-compression-rods-replaced-new-part-info-v35compressionfile.jpg)
Good luck and keep us up to date with what happens!
![Name: 108282public.jpg
Views: 435
Size: 77.4 KB](https://g35driver.com/forums/attachments/brakes-suspension/248337d1502131791-compression-rods-replaced-new-part-info-108282public.jpg)
This shows the most recent part numbers as 54468/54469-AC70A
When that part number is put into the parts system it goes to a service file which calls for the bolt and a AC70F number...
Seen here...
As you can see from the date on my parts disc, 1, 1, 08. it is the most up to date INFINITI has to offer...
![Name: v35compressionfile.jpg
Views: 389
Size: 72.7 KB](https://g35driver.com/forums/attachments/brakes-suspension/248338d1502131791-compression-rods-replaced-new-part-info-v35compressionfile.jpg)
Good luck and keep us up to date with what happens!
#15
Originally Posted by Jeff92se
I wonder if we could just get new bushings pressed into the old arms?
But the cost and down time of getting new bushings, pressing them in and out (which isnt the easiest). will end up costing as much as a new arm if not more!