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  • RB20/25/26/30 Rear Main Seal - Boost Factory

    RB20/25/26/30 Rear Main Seal

    • $44.99


    OEM Replacement rear main seal for all Nissan RB Engines.  This is a high quality OEM seal made in Japan by NDK.

    Customer Reviews

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    J
    Jason Chung
    bash out the old, gently tap in the new

    Easy enough while you have the transmission out to replace this. A huge pain to make sure it's warm enough and there is no oil touching the RTV stuff while it's curing, otherwise you'll likely have a permanent small leak.