ASP Idler pulley saved me big $$$$$.
If this pulley breaks, you are SOL.. You loose both belts and car will be un-able to drive.. At best, parts fall on the ground and do not sling through the hood of the car or cause other damage.. Most of all, this idler pulley is sold as a set by MB for close to 400.00 bucks!!
Signs of a bad idler are squeeking noise at start up and wobbling when you twist it with your hand..
I sent my stock pulley to ASP and they machined up a new heavy duty Idler pulley out of billet aluminum. They said bearings are now Z rated wich can handle higher RPM than the stock bearings.. I left mine clear coated silver but custom colored anodizing can also be done..
PIC 1 ASP idler pulley with stock bolt cap
PIC 2 Stock pulley and ASP pulley
PIC 3 Install pulley
BTW, this is a 10 minute install or Re/Re.. It is that easy!

E63 Biturbo, UPD Cold Air induction kit, UPD performance crank pulley and UPD adjustable rear suspension with ride height adjustment.
CL55 UPD Cold Air Boost kit, UPD 3000 stall converter, UPD 77mm SC clutched pulley and beltwrap kit, Custom long tubes, UPD crank pulley , UPD suspension kit, UPD SC pulley, Aux. HE, Trunk tank w/rule 2000 pump, Mezeire pump, UPD 5pc idler set, Aluminum rotor hats.
www.ultimatepd.com
instagram @ultimate_pd
facebook.com/ultimatepd
Last edited by Exotic-metal55; Dec 17, 2009 at 05:47 PM.
I have already had two sets fail on my car and it sucks! First at 37K and then I bought a used set that had 39K .. It failed after 9K on my car..
Kinda of strange looking at a Chip Foose looking hot rod pulley on my Benz..lol Maybe time for a WP, Idler and S/C pulley custom made and color anodized.

E63 Biturbo, UPD Cold Air induction kit, UPD performance crank pulley and UPD adjustable rear suspension with ride height adjustment.
CL55 UPD Cold Air Boost kit, UPD 3000 stall converter, UPD 77mm SC clutched pulley and beltwrap kit, Custom long tubes, UPD crank pulley , UPD suspension kit, UPD SC pulley, Aux. HE, Trunk tank w/rule 2000 pump, Mezeire pump, UPD 5pc idler set, Aluminum rotor hats.
www.ultimatepd.com
instagram @ultimate_pd
facebook.com/ultimatepd
I tested and mic-ed all the specs during instal and this is a very nice peice of work..

E63 Biturbo, UPD Cold Air induction kit, UPD performance crank pulley and UPD adjustable rear suspension with ride height adjustment.
CL55 UPD Cold Air Boost kit, UPD 3000 stall converter, UPD 77mm SC clutched pulley and beltwrap kit, Custom long tubes, UPD crank pulley , UPD suspension kit, UPD SC pulley, Aux. HE, Trunk tank w/rule 2000 pump, Mezeire pump, UPD 5pc idler set, Aluminum rotor hats.
www.ultimatepd.com
instagram @ultimate_pd
facebook.com/ultimatepd
Trending Topics
The Best of Mercedes & AMG
I think I will have the S/C tensioner pulley made next, just to get better bearings and get rid of the ugly metal two peice pulley..Yuck! That Fugly thing is in my face every time the hood is opened..

E63 Biturbo, UPD Cold Air induction kit, UPD performance crank pulley and UPD adjustable rear suspension with ride height adjustment.
CL55 UPD Cold Air Boost kit, UPD 3000 stall converter, UPD 77mm SC clutched pulley and beltwrap kit, Custom long tubes, UPD crank pulley , UPD suspension kit, UPD SC pulley, Aux. HE, Trunk tank w/rule 2000 pump, Mezeire pump, UPD 5pc idler set, Aluminum rotor hats.
www.ultimatepd.com
instagram @ultimate_pd
facebook.com/ultimatepd
Last edited by Exotic-metal55; Dec 17, 2009 at 08:48 AM.
If you are concerned with the $275 price differences of an idler pulley, and don't have an extended warranty... wow, just wait until something really goes wrong. I don't know the exact figure, but my warranty cost around $4000 - and it's paid for itself like 2-3 times over. I want to be clear - I take care of my car better than 99% of the people on this forum. I haven't even hit 50k miles yet.
Let me be clear, I don't mean to scare everyone, no question I've had some bad luck, but at the same time bad luck is just that - luck - and any one of these cars can have it too. No one likes to talk about their cars when they are broken but let me tell you, I know a lot of E55 owners who've had to have a LOT of warranty work done even when they treat their cars well (although, still not as well as I do).
-m
So the ASP pulley saved me a lot more than the difference..
That is my whole point.. I take very good care of my car but also run it damn hard.. If the POS pulley fly`s through my hood and or radiator, then what will warranty say? Not going to chance that over a few hundred bucks.. I hear you on the warranty and you are right, some here get a good deal on a 55 but can not afford to keep up with repairs.. They can be brutal , with no warranty.. That is a whole other topic..
If you are concerned with the $275 price differences of an idler pulley, and don't have an extended warranty... wow, just wait until something really goes wrong. I don't know the exact figure, but my warranty cost around $4000 - and it's paid for itself like 2-3 times over. I want to be clear - I take care of my car better than 99% of the people on this forum. I haven't even hit 50k miles yet.
Let me be clear, I don't mean to scare everyone, no question I've had some bad luck, but at the same time bad luck is just that - luck - and any one of these cars can have it too. No one likes to talk about their cars when they are broken but let me tell you, I know a lot of E55 owners who've had to have a LOT of warranty work done even when they treat their cars well (although, still not as well as I do).
-m

E63 Biturbo, UPD Cold Air induction kit, UPD performance crank pulley and UPD adjustable rear suspension with ride height adjustment.
CL55 UPD Cold Air Boost kit, UPD 3000 stall converter, UPD 77mm SC clutched pulley and beltwrap kit, Custom long tubes, UPD crank pulley , UPD suspension kit, UPD SC pulley, Aux. HE, Trunk tank w/rule 2000 pump, Mezeire pump, UPD 5pc idler set, Aluminum rotor hats.
www.ultimatepd.com
instagram @ultimate_pd
facebook.com/ultimatepd
Last edited by Exotic-metal55; Dec 17, 2009 at 03:58 PM.
So the ASP pulley saved me a lot more than the difference..
That is my whole point.. I take very good care of my car but also run it damn hard.. If the POS pulley fly`s through my hood and or radiator, then what will warranty say? Not going to chance that over a few hundred bucks.. I hear you on the warranty and you are right, some here get a good deal on a 55 but can not afford to keep up with repairs.. They can be brutal , with no warranty.. That is a whole other topic..
-m
Included a better perspective angle.. Bright silver outer pulley, is the S/C idler..

E63 Biturbo, UPD Cold Air induction kit, UPD performance crank pulley and UPD adjustable rear suspension with ride height adjustment.
CL55 UPD Cold Air Boost kit, UPD 3000 stall converter, UPD 77mm SC clutched pulley and beltwrap kit, Custom long tubes, UPD crank pulley , UPD suspension kit, UPD SC pulley, Aux. HE, Trunk tank w/rule 2000 pump, Mezeire pump, UPD 5pc idler set, Aluminum rotor hats.
www.ultimatepd.com
instagram @ultimate_pd
facebook.com/ultimatepd
Last edited by Exotic-metal55; Dec 17, 2009 at 07:18 PM. Reason: include pic
If you are concerned with the $275 price differences of an idler pulley, and don't have an extended warranty... wow, just wait until something really goes wrong. I don't know the exact figure, but my warranty cost around $4000 - and it's paid for itself like 2-3 times over. I want to be clear - I take care of my car better than 99% of the people on this forum. I haven't even hit 50k miles yet.
Let me be clear, I don't mean to scare everyone, no question I've had some bad luck, but at the same time bad luck is just that - luck - and any one of these cars can have it too. No one likes to talk about their cars when they are broken but let me tell you, I know a lot of E55 owners who've had to have a LOT of warranty work done even when they treat their cars well (although, still not as well as I do).
-m
Your ASP idler pulley looks nice - I have an ASP crank pulley on my M111K and it's been both effective and reliable.
Last edited by PTE; Dec 18, 2009 at 07:57 AM.





