Part# 13792
MFR Model# LW-13792


Crankshaft seal (molded lip on outside surface - solid type - three grooves for glue retention)
  • Customers Also Viewed
  • Frequently Purchased With


Exact factory replacement seal.

Mark B Verified Purchase


October 16, 2021

Great oil seal. The finishing and manufacturing features jumps out on your eyes way ahead from competition. It snapped right in after stretching it with the ATS tool. The only thing I did not like is the spring with the tread connection feature. I used the one with the hooks at the end from the other brand. Way easier to close the spring ring around the crankshaft. Run the engine for 7 minutes next day after 24 hours RTV seal curing. Works like a champ.

Lewis M
April 19, 2021

Works well. Follow lycoming instructions for installation. Be sure to properly prepare crankcase before installation. Must be properly cleaned so glue will adhere.

Ralph H
February 2, 2019

Install the spring on crank/prop shaft after seal bore is prepped but before the seal is stretched over the flange. Stretch the spring evenly and smoothly over its whole length just enough to screw the ends together. Then stretch the seal over the flange and work the spring into the seal groove.

April 9, 2018

Follow Lycomings Service Letter for installation. The new spring is a screw in connection. I found it impossible to reconnect because my fingers were to big to fit in the space between the crankshaft flange, new seal and the case. I reused the old hook style spring which installed easily. So my advise is dont wreck the old spring when removing the old seal

July 20, 2017


Please note, Aircraft Spruce's personnel are not certified aircraft mechanics and can only provide general support and ideas, which should not be relied upon or implemented in lieu of consulting an A&P or other qualified technician. Aircraft Spruce assumes no responsibility or liability for any issue or problem which may arise from any repair, modification or other work done from this knowledge base. Any product eligibility information provided here is based on general application guides and we recommend always referring to your specific aircraft parts manual, the parts manufacturer or consulting with a qualified mechanic.

Q: Does the lycoming crankshaft seal Part # 13792 include the coiled spring inside the seal?

The lycoming crankshaft seal Part # 13792 does include the coiled spring inside the seal.

Q: Is LW-13792 same as LW-11997?

The LW-13792 is a solid seal and the LW-11997 is a split seal. Split seals are easier to install, while the solid seals seem to last longer.

Q: Is part # LW-13792 the same as part # LW13792?

Yes, these are the same parts.

Q: Does LW-13792 replace SL-13792?

LW-13792 is the Lycoming version of the Superior SL-13792. These parts are interchangeable.

Q: Any glue material for seal installation?

Per the installation instructions you would used Dow Corning 737 (09-05339.)

View in Catalog

View Image View in Catalog