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There was a change in the touring trans top cover, I THINK in 2020. 2017-2019 touring top covers will not work for venting crankcase due to the internals of the top cover changing.
In 2020 the touring trans top cover switched to the softail trans top cover.
34800038 is the 2017-2019 touring number.
34800046 is the 2020+ number.
Nothing changed internally other than the gasket. In 2020 the top cover was changed from aluminum to plastic. The aluminum cover flat gasket blocked off the area to vent the crankcase. The plastic cover gasket is a flexable rubber gasket that fits in a groove in the cover. The area that vents the crankcase is open. When DIY venting the aluminum cover, it was necessary to punch a hole in the flat gasket.
Plastic cover gasket.
Last edited by barneyboy; Feb 5, 2024 at 05:11 PM.
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