Rear diff cover bolt size??
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2013 c63 Magnuson SCed
Rear diff cover bolt size??
Trying to grab some ARP bolts for the rear diff cover while the Wavetrac is being installed and have gotten 3 different answers so far. I'm seeing M8x1.50x16, M8x1.25x16 and M8x16.25x20 depending on where I look.
I've tried to find them on what I believe is the official MB parts site and it says w204 c63 at the top,but then the 70-some fitments underneath don't include us. I'm a bit over it.
I've tried to find them on what I believe is the official MB parts site and it says w204 c63 at the top,but then the 70-some fitments underneath don't include us. I'm a bit over it.
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12' W204 C63 AMG coupe "T-Rex", 12' W451 Smart Fortwo Pulse (99' W202 C43 AMG + Ultima Can-Am sold)
Last edited by DRBC43AMG; Nov 21, 2025 at 04:10 AM.
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From: New Hampshire
ML 63 AMG
Originally Posted by Accidental L8 apex;[url=tel:9236508
9236508[/url]]Trying to grab some ARP bolts for the rear diff cover while the Wavetrac is being installed and have gotten 3 different answers so far. I'm seeing M8x1.50x16, M8x1.25x16 and M8x16.25x20 depending on where I look.
I've tried to find them on what I believe is the official MB parts site and it says w204 c63 at the top,but then the 70-some fitments underneath don't include us. I'm a bit over it.
I've tried to find them on what I believe is the official MB parts site and it says w204 c63 at the top,but then the 70-some fitments underneath don't include us. I'm a bit over it.
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From: NJ
2009 SL63 AMG
This was my first thought as well.
You're not going to be compromising the clamping force enough to cause the fluid to leak out from this.
Remove 1 bolt from the top of the diff cover, verify its specifications with a thread checker and reinstall.
You're not going to be compromising the clamping force enough to cause the fluid to leak out from this.
Remove 1 bolt from the top of the diff cover, verify its specifications with a thread checker and reinstall.
