# 350z help
**URL:** https://forums.speedlife.net/t/350z-help/136479
**Category:** Canada Nissan Automotive
**Created:** [December 2, 2008, 10:57am UTC](https://forums.speedlife.net/t/350z-help/136479 "2008-12-02T10:57:00Z")
**Posts on this page:** 5
**Page:** 1
### Author:  [@kiran\_chansingh](https://forums.speedlife.net/u/kiran_chansingh)
#### Post date: [December 2, 2008, 10:57am UTC](https://forums.speedlife.net/t/350z-help/136479/1 "2008-12-02T10:57:00Z")
hey guys i need some help, i’ve got a 03 350z i noticed in the front when im driving over bumps or step on my brakes i hear a knocking sound. i had a look under the car and noticed that my lower control arm bushing is shredded up on both left and right side. anyone had this problem ? can i just change the bushing or do i have to change the whole arm ?
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### Author:  [@SGSash](https://forums.speedlife.net/u/SGSash)
#### Post date: [January 30, 2009, 7:58pm UTC](https://forums.speedlife.net/t/350z-help/136479/2 "2009-01-30T19:58:41Z")
Typically the compression rods go on these cars fairly often.
If your lower control arm bushing is damaged that needs to be replaced as well.
Shoot me an email at [sanis@sg-motorsport.com](mailto:sanis@sg-motorsport.com) and we will fix you right up!
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### Author:  [@jdm350zguy](https://forums.speedlife.net/u/jdm350zguy)
#### Post date: [February 18, 2009, 12:43pm UTC](https://forums.speedlife.net/t/350z-help/136479/3 "2009-02-18T12:43:43Z")
> [@Snakes will eat ANYTHING](https://forums.speedlife.net/t/snakes-will-eat-anything/3298/30):
>
> hey guys i need some help, i’ve got a 03 350z i noticed in the front when im driving over bumps or step on my brakes i hear a knocking sound. i had a look under the car and noticed that my lower control arm bushing is shredded up on both left and right side. anyone had this problem ? can i just change the bushing or do i have to change the whole arm ?
Yup I have the same problem!
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### Author:  [@l2iceboy](https://forums.speedlife.net/u/l2iceboy)
#### Post date: [May 25, 2009, 10:15am UTC](https://forums.speedlife.net/t/350z-help/136479/4 "2009-05-25T10:15:21Z")
is this a costly repair? i’m looking at purchasing a 350z this week or next week. when i go to test drive them, i will see if the tranny grinds, windows work, and if there is any knocking/clunking sound in the fronts or rears…
are 350s prone to rust so far? like anyone with 2003/2004 models have any rust under the car(like rotting, not the usual surface rust which every car probably has) or on the body…since the cars are 5-6 years old now…
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### Author:  [@DT80](https://forums.speedlife.net/u/DT80)
#### Post date: [May 28, 2009, 7:32am UTC](https://forums.speedlife.net/t/350z-help/136479/5 "2009-05-28T07:32:19Z")
going over little bumps or uneven roads and you hear knocking, ratlling noise then it’s def. your comression rod. one side was gone on mine but i replaced both sides as that will soon go to. if you need hookup on the parts let me know. Nissan sells it for $303.00 + tax per side. i can get for a bit cheaper (OEM part). shoot me an email at [dtran80@hotmail.com](mailto:dtran80@hotmail.com) if interested.
thanks
> [@Snakes will eat ANYTHING](https://forums.speedlife.net/t/snakes-will-eat-anything/3298/30):
>
> hey guys i need some help, i’ve got a 03 350z i noticed in the front when im driving over bumps or step on my brakes i hear a knocking sound. i had a look under the car and noticed that my lower control arm bushing is shredded up on both left and right side. anyone had this problem ? can i just change the bushing or do i have to change the whole arm ?