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Thread: Differential bushing: poly or OE?

  1. #1
    Join Date
    Mar 2011
    Location
    Independence KY
    Posts
    2,096

    Differential bushing: poly or OE?

    I need to replace my rear diff bushing, I was gonna go with OE but my Indy is suggesting something poly. I want to to feel OE but not have to worry about doing it again, if I go the poly route.

    Any recommendations?

    Should I do anything else while this is being done (bushing or hardware wise) to the drive line, etc?
    2005 BMW 330i ZHP - BMWP brakes/intake/strut bar/shifter, Coby wraps interior, BBS CHs, Eagle Eye LED tails, GC coilovers, 2x2 CF MTECH2 diffuser, Sprint Booster/sport button mod, 4.5 LCM, Xtrons 9inch HU, BSW stg1, dynamat, M3 sedan dead pedal
    2017 Toyota 4Runner TRD Pro Cement Gray - OE blackout badges, Innovativ HIDs, Phillips LED fogs, CanvasBack full rear coverings



  2. #2
    Join Date
    Jun 2011
    Location
    VA/DC
    Posts
    14,446
    Consider the RTABs with limiters. Iím not a fan of poly and would go OEM/Lemforder, etc.

  3. #3
    Join Date
    Nov 2016
    Location
    Charlotte, NC
    Posts
    2,537
    I was just looking into this today and was about to pull the trigger on the meyle hd bushing but couldn't find many reviews. There's also an option from Bilstein that should be a bit stiffer than stock, but still rubber.

    Differential Mount Bushing Rear E46 X3 Z4 https://www.amazon.com/dp/B007RH535Q..._cZQOCbXFZRQ78

  4. #4
    Join Date
    Nov 2012
    Location
    22841
    Posts
    9,374
    OE rubber is the way to go.

    His - 2004 Imola Red / Alcantara 330i | 6MT | ZHP |

    Her's - 2005 Black Sapphire Metallic / Black Leather 330i | 6MT | ZHP |

  5. #5
    Join Date
    Mar 2011
    Location
    Independence KY
    Posts
    2,096
    Just purchased turner RTAB limiters for 60 shipped on eBay.

    So OE is the way to go eh?
    2005 BMW 330i ZHP - BMWP brakes/intake/strut bar/shifter, Coby wraps interior, BBS CHs, Eagle Eye LED tails, GC coilovers, 2x2 CF MTECH2 diffuser, Sprint Booster/sport button mod, 4.5 LCM, Xtrons 9inch HU, BSW stg1, dynamat, M3 sedan dead pedal
    2017 Toyota 4Runner TRD Pro Cement Gray - OE blackout badges, Innovativ HIDs, Phillips LED fogs, CanvasBack full rear coverings



  6. #6
    Join Date
    Jan 1970
    Location
    Branford, CT
    Posts
    15,667
    OE. I had AKG poly's in my diff and swapped them back out for stock because the poly ones just made shifts harsher. If you don't rev match absolutely perfectly, your diff will let you know. I would get a minor clunk when the rev match wasn't 100% perfect, and you can feel it a bit harsher when you let the clutch out. Also, you get some diff whine at certain RPMs while cruising with the polys. I don't like that feeling it gave, though I do like the whining sound. I ended up going back to OE and am happy with the choice.

    I can't speak to Meyle's diff bushings, but if their diff bushings are anything like their control arm bushings, don't bother, unless you want to replace them again soon.
    BP
    2005 330i ZHP / 6MT
    Imolarot / Naturbraun



    It's not the car you drive, it's how you drive it.

  7. #7
    Autozone.com
    Solid....no? k

    I have the Meyle HD bushing. It looks like, well a bushing. If I have to replace it again in 2-3 years, I'm ok with that.
    2003 Blue ZHP Sedan @ 205k
    Paint chips | Current MIL: None | Airbag Light | Poorly Sprayed Black Style 135s |Ugly Alcantara Steering Wheel | Trunk Squeak | Faded Shadowline Trim | Clogged Cats
    Next repair: Replace old, rusty subframe with a fully refreshed one.
    YouTube SUBSCRIBE!!!!

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