Sonnax oil pan kit 28801-S is no longer in production. Please check with distributor for availability.


Filter Extension Kit
Part No. 28801-S09K

For use with 28801-S, Standard Powerglide valve body & filter

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Sonnax oil filter extension kit 28801-S09K for GM Powerglide units is designed for use with Sonnax oil pan kit 28801-S. The kit properly positions the oil filter further toward the rear of the pan to ensure fluid is picked up under hard acceleration and to match the wedge shape and depth of the Sonnax pan.

  • Positions filter deep in the rear of the pan, below the baffle
  • Made from high-quality aluminum
  • Includes all necessary mounting hardware and gaskets
  • Filter Extension Casting
  • Filter Gaskets (2)
  • Extension Screws (2)
  • Pan Screws (2)
  • Lock Washers (2)
  • Powerglide Filter Extension Kit 28801-S09K