Oil Pan Kit
Part No. 28801-S

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Sonnax offers high-quality, lightweight aluminum oil pan kit 28801-S for GM Powerglide transmissions. The pan, the lightest on the track, has a wedge shape that allows for two extra quarts of oil capacity without sacrificing ground clearance. Seamless construction and a reinforced pan rail minimize distortion and eliminate leaks and cracks, while the integral baffle ensures proper oil supply during hard acceleration. Threaded fittings are provided for the oil drain and a second fitting for temperature sender or oil chiller return. A magnetic drain plug and nylon sealing washer are included in the kit.

  • Wedge-shape design for additional ground clearance
  • Two quarts extra fluid capacity
  • Pan formed from .125" thick aluminum
  • Seamless construction
  • Front depth 2.4"
  • Rear depth 3.2"

To ensure fluid is picked up under hard acceleration, a special extension must be used with this oil pan to position the filter rearward under the baffle and deeper into the oil. Sonnax extension kits 28801-S09K and [28801-S11K] include all the necessary mounting hardware and gaskets. Choose the kit that suits your specific application.

  • Oil Pan
  • Reducing Bushing 1/2" NPT Male to 1/8" NPT Female
  • Magnetic Drain Plug, w/Sealing Washer 1/2"- 20
  • Pipe Plug 1/8" NPT
  • Powerglide Oil Pan Kit 28801-S


Get Ready to Race with the Upgraded Sonnax Powerglide Oil Pan
From the Bench: Building a World‑Class Powerglide Racing Transmission