For 6L80 6L90 8L90 Allison 1000 trans Cooling System Upgrade Kit 6L80-CLR-BYPASS

An easy, no-hassle cost-effective drop-in Cooler Flow Bypass Upgrade Kit for General Motors 6L80, 6L90, 8L90 and Allison transmissions. Fits 2014-on 6L80, 6L90, 2016-on 8L90, 2017-19 Allison 1000. General Policies.

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