[uptolexington125]

Hey guys,

While I was changing the brake pads on my '88 560SL, I broke a bolt on my calipers, and now I need to extract and replace it. Problem is, after searching for days, I cannot for the life of me identify this bolt. Can anyone help? It's not the actual "caliper bolt"—it's one of these four bolts, circled in the photo below:

And here's the bolt I broke—about 2/3 of it is still inside the caliper:

I wouldn't ask if I hadn't already poured days into trying to find this on here and across the web, gone to AutoZone searching for one, etc. Thanks in advance, y'all!

Drew

 

[classictile]

I believe those 4 bolts hold the two haves of the caliper together, are trying to split the caliper in half ? in any case good luck with your search

 

[R3504Matic]

For 1986-1989 Mercedes 560SL Caliper Bolt Genuine 42972VS 1988 1987 | eBay

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[R3504Matic]

Are they front calipers or rear calipers, makes a difference I believe too

 

[R3504Matic]

Im not sure these are it, but you might want to ask the dealer if the bolts are similar from 560sel and 560sl, sometimes they share similar.

For 1986-1991 Mercedes 560SEL Caliper Bolt Front 56991YF 1987 1988 1989 1990 | eBay

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[roncallo]

Hey guys,

While I was changing the brake pads on my '88 560SL, I broke a bolt on my calipers, and now I need to extract and replace it. Problem is, after searching for days, I cannot for the life of me identify this bolt. Can anyone help? It's not the actual "caliper bolt"—it's one of these four bolts, circled in the photo below:

View attachment 2810991

And here's the bolt I broke—about 2/3 of it is still inside the caliper:

View attachment 2810992

I wouldn't ask if I hadn't already poured days into trying to find this on here and across the web, gone to AutoZone searching for one, etc. Thanks in advance, y'all!

Drew

Looks like a regular 8mm bolt. Do you have one of the other ones out? Can you measure the length. Can you post a picture of the head?

McMaster-Carr

McMaster-Carr is the complete source for your plant with over 595,000 products. 98% of products ordered ship from stock and deliver same or next day.

www.mcmaster.com

 

[R3504Matic]

Doesnt look like they sell those bolts from the parts but the parts clerk would know to look up. They have better sub menus

FG 107.045 - BRAKE > Mercedes EPC Online > nemigaparts.com

Parts catalogs. Spare parts catalog Mercedes EPC Online. Mercedes. Car. BRAKE.

nemigaparts.com

 

[R3504Matic]

Looks like a regular 8mm bolt. Do you have one of the other ones out? Can you measure the length. Can you post a picture of the head?

McMaster-Carr

McMaster-Carr is the complete source for your plant with over 595,000 products. 98% of products ordered ship from stock and deliver same or next day.

www.mcmaster.com

Very cool link here. Will bookmark. Very useful. Thanks

 

[roncallo]

Doesnt look like they sell those bolts from the parts but the parts clerk would know to look up. They have better sub menus

FG 107.045 - BRAKE > Mercedes EPC Online > nemigaparts.com

Parts catalogs. Spare parts catalog Mercedes EPC Online. Mercedes. Car. BRAKE.

nemigaparts.com

I doubt they are available from the dealer. They are not supposed to be taken apart.

 

[SocalSam]

Similar to W210 rear calipers. Four bolts hold halves together.

 

[uptolexington125]

Thanks a ton for weighing in, y'all. Roncallo: I don't have one of the other ones out yet. I'd measure the length of the broken bolt, but it wouldn't tell me much—not sure of the length of the portion that's broken inside the caliper. For now, here's a photo of the head. Couldn't glean anything from it myself:

And yep, you got it, classictile—it's one of four bolts that hold the calipers together. I loosened them to help me get my old, stuck brake pad out, which, in retrospect, was a mistake 🙃

 

[plinker17722]

For 1986-1989 Mercedes 560SL Caliper Bolt Genuine 42972VS 1988 1987 | eBay

Find many great new & used options and get the best deals for For 1986-1989 Mercedes 560SL Caliper Bolt Genuine 42972VS 1988 1987 at the best online prices at eBay! Free shipping for many products!

www.ebay.com

View attachment 2810994

This is not the bolt .These bolts hold caliper to hub .Bolts that are needed hold both halves of the brake caliper together if i am right ..

 

[R3504Matic]

It might be cost effective and time savings to buy a used caliper. They have tons on sale on ebay. It should be an easy part to get.

 

[reno4u2]

My local Ace Hardware has a surprisingly good selection of metric hardware...maybe yours' does too. Worth a visit anyway.

 

[RaceDiagnostics]

Just make sure you replace it with a 10.9 strength bolt.

 

[roncallo]

Just make sure you replace it with a 10.9 strength bolt.

This is my 560SL front caliper. I believe that bolt says 11.9. I never heard of an 11.9 and there are arguments on the web about weather they exist or not. So I vote 12.9. Also the bolts go right threw to the other side so ~ 65mm length. Both Mcmaster and Bell Metric only sell 12.9 8M bolts up to 60mm in fully threaded configuration. 60mm should be fine unless the hole is pocketed at the parting seam.

Belmetric is cheeper: Hex Bolts 12.9 Full M8X1.25 Coarse DIN 933

 

[sbarber036]

Get another caliper. You aren't going to be able to get the remainder out. Bolts are really, really hard.

 

[NYw126-91]

Luv Belmetric

 

[Marlin Spike]

Even if you get the remaining bolts (and pieces) out will you be able to reuse the gasket between the halves or find another? May be worth looking into rebuilt calipers. Beware of clone calipers that are not rebuilt ATE/Mercedes hardware.

 

[SocalSam]

I've opened up more than a few W210 rear calipers at the junkyard and have never seen a gasket or gasket maker between the two halves. It must some very good machining.