Hello to Everyone,
I am in need of new front lower control arms for my 2012 XJL. I see replaceable bushings but I am finding it difficult to find the whole arms for left and right side.
Any thoughts, ideas?
JD

 

ebay

 

Front control arm original manufacturer are Lemförder. Part nr:39715 01, AW933C256AD, AW93-3C256-AE, AW933C256AF, C2D49933 or C2D6343. Fits in both sides.
I can see them well on stock on european carparts suppliers at this moment. Not sure if they deliver to US?
https://alvadi.fi/en/kataloog/varuosa/23312162/26376
or
https://www.autodoc.fi/lemforder/12795897
or
https://www.skruvat.fi/Tukivarsi-pyo...-P1267040.aspx
Easy to change, but an good 4-wheel aligment needed since x351 platform are very sensitive for wheel aligment, because part of the bushings on arms are so called hard type. (no forgiving flex)

 

Thank you for your help Vasara, I found the lower arms and the banana arm as well at FCP Euro. They were reasonably prices so I got enough to do both sides.
JD

 

Please give us an update after you've completed your repairs:
mileage on vehicle
why you replaced parts
before and after impressions

My 2012 does not sit comfortably in its lane at highway speeds Tires and alignment are within specs, but I think a car of this stature would be more stable and require fewer steering corrections on the highway.

 

Baltobernie: How and who made the aligment? An proper way to do the aligment on chassis what include so called hard bushings, like x351 do, are to first check condition and flex of all soft bushes, since because hard ones do not give any flex, all forces generated by slight miscorrection are bending soft bushes causing them to flex and that will ingrease the miscorrection even more.
Most garages do set exsample the toe-in on max edge of negative tolerance in front axle (RWD) for natural stiffening of possible wear, tear and play. This are ok, if all bushes are full rubber. They share the forces, wheels will find they natural rolling track and car feels good. On chassis where are hard bushes, exsampe x351 rear lower control arm rear inner bush, the hard one do not flex at all, it is like an bearing, but the front inner one are full rubber and incorrect toe setting will cause flex for it and that will increase mis-aligment.

What i have seen here locally, only garages who are working with sportcars/racecars do sucseed. Even some JLR services do not set it accuracy enough.
Its not that mechanics do not know how to use the measurement equipment, its more understanding that there will not be flex available for self tracking. All misaligment will cause even more misaligment. Nowdays i allways ask if i can speak with the mechanic before he/she start the work. I ask to check the types of bushes XJ do have, so he/she will understand the accuracy the work will need. If it´s not possible, then i will go to another place. (i have done better work myself, by just with wires around the car, than some places)

If your car are not going straight in highway, note two things: Do your car steer itself? (does the steering wheel have forces/movements what you do not add?) Then focus on front axle. Check front lower control arm (banana arm) inner bushes. They wear at 100tkm (65t Miles). Thats complety normal and happens on all same type of suspensions like MB:s. You might need to remove them to see the wear. Complete control arm "banana arn" are cheap as OEM part (Lemförder) and easy to change.
If you car change direction without movement of steering wheel, focus on rear axle. I put my penny for incorrect toe setting, but could be weared bush as well.
Note: If car have had incorrect alligment long time the extra load for bushes can wear them out very fast.

My XJ have now bit over 300t km (188t Mil), it have 3rd pair of front control arms, one front wheel bearing and just last month i changed an left side lower rear suspension arm. Not because it had yet an play or wear, but it started to make innoing screaking noise. (the hard bush have been dryed) Everything else are original.
I do take my vehicles for wheel adjustent every time i renew the tyres.
2nd note: If you take your car for trackdays with roadtyres, the heat can cause steel radial roadtyres deform so that they lose the sidewall stiffness. After that its like riding a snake. (done that several times teasing sone build track car with roadlegal XJ )

 

Vasara I need your help? I can't find this part? Don't know where else I can look?

I some how have broken one of the plastic "scoops" that are zip tied to the front lower control arms. Road debris I guess?






Every X351 XJ I have worked on has these on both sides of the car. But I can't find any mention of them in JPART or on the factory Jaguar parts sites. Thought they might be shown some where in the suspension system since they are attached to those front banana arms?

Anyone know what they are called or a part number?

I found them!
It WAS in JPART but it was way at the bottom and I did not see it! It's listed in the front disc brake section.

LH Brake Cooling Duct - C2D24292
RH Brake Cooling Duct - C2D30293

Note these are for cars W/O AWD. About $50 each!
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