GSF/RCF LCA bushings in ISF
#1
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The Lexus part number for the GSF/RCF LCA bushings share the same part number, but for the ISF is different. Does anyone know if the GSF/RCF lower control arm bushings are interchangeable with ISF ? Are the GSF/RCF LCA bushings better design/stiffer than the ISF bushings?
The part number that I found:
GSF/RCF 48075-24010, 48076-24010
ISF: 48075-30020, 48076-30020
The part number that I found:
GSF/RCF 48075-24010, 48076-24010
ISF: 48075-30020, 48076-30020
#5
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They swap right in, I ordered the RCF bushings and installed. They are a slightly harder compound and do make a difference without needing to worry about the squeaks that can develop with the poly. Though I'm sure the poly make a larger difference in handling.
#6
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Do you have the part # ? Is it the same part# that I have listed ? Poly does make a huge difference in handling/braking/steering wheel feel, but suffers ride quality. I have the RR LCA bushings, but I drive on streets and no tracks so I'm more into the rubber bushings now. The RCF/GSF LCA bushings can be a 3rd choice for ISF.
Last edited by zen; 04-26-18 at 01:33 PM.
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How does it compare to the stock isf bushing and also did it fix the front camber wear??
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#8
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Do you have the part # ? Is it the same part# that I have listed ? Poly does make a huge difference in handling/braking/steering wheel feel, but suffers ride quality. I have the RR LCA bushings, but I drive on streets and no tracks so I'm more into the rubber bushings now. The RCF/GSF LCA bushings can be a 3rd choice for ISF.
Another reason I went with the Lexus parts is my car is on certified warranty for a few more years and I don't want anything aftermarket that could come up as a potential question with a warranty repair. It looks identical so its not something a tech would get under the car and see as an issue. If my car was out of warranty, I probably would have leaned more toward the poly.
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Sure, the part numbers are (48076-24010 and 48075-24010) same as you listed. As far as the +/- 20 offset, I went with the zero. There is a noticeable difference in feel when cornering and braking but no noticeable increase in NVH. I haven't driven a car with the poly so I can't compare with RR or Figs.
The parts look identical to stock ISF but the rubber is a bit harder compound. My car came with new tires and I put the bushings on shortly after purchase and so far the tire wear is even last I checked.
Another reason I went with the Lexus parts is my car is on certified warranty for a few more years and I don't want anything aftermarket that could come up as a potential question with a warranty repair. It looks identical so its not something a tech would get under the car and see as an issue. If my car was out of warranty, I probably would have leaned more toward the poly.
The parts look identical to stock ISF but the rubber is a bit harder compound. My car came with new tires and I put the bushings on shortly after purchase and so far the tire wear is even last I checked.
Another reason I went with the Lexus parts is my car is on certified warranty for a few more years and I don't want anything aftermarket that could come up as a potential question with a warranty repair. It looks identical so its not something a tech would get under the car and see as an issue. If my car was out of warranty, I probably would have leaned more toward the poly.
#10
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Bummer. Wish I had seen this last week. I just replaced mine with new OE is-f bushings as mine were showing cracks all the way around. Car feels much smoother and better. These are a wear item on many BMWs as well but the job is much easier on the IS-F as they are easy to slide on and off the control arm shaft.
#11
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There is no camber wear on the IS F at any reasonable ride height. Inside edge wear is caused by toe control, not by camber.
#14
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Sure, though I probably haven't put 5k on the F since my last post but tire wear is still perfectly even. This was one of the first mods (really the only mod) I have done to my car. Its a 14' and on warranty so keeping it mostly stock for now.
#15
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There is no camber wear on the IS F at any reasonable ride height. Inside edge wear is caused by toe control, not by camber.
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