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Thread: M3 MPS BL gearbox fit a BK or vice versa

  1. #1
    Onyamps is offline New Member
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    Default M3 MPS BL gearbox fit a BK or vice versa

    Hi everyone,

    I am pretty new to mazda 3 and I was wondering if anyone can tell me if the BL gearbox will fit in a BK model or vice versa? I am having gearbox issues and trying to hunt down another gearbox for my BK mps.

  2. #2
    Nexus's Avatar
    Nexus is offline Administrator
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    Yes, gearbox interchangeable. 1-2 gears are taller ratios in BL box compared to BK. I've a BL box in my BK.
    Last edited by Nexus; 02-12-2018 at 08:56 PM.

  3. #3
    Onyamps is offline New Member
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    Thank you Nexus, So in a way the BL Box is better and have you noticed any difference in strength of the box?

  4. #4
    Nexus's Avatar
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    Apart from the 1-2 ratios, they're just about identical afaik. As strong as each other I expect.

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