Bravo3 x Shaft Not Fully Seating in New MerCruiser 6.2 Coupler — Normal or Problem?

Domen

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Jul 2, 2025
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Hi all,

We recently had a new MerCruiser 6.2L ECT BRAVO DTS (2024, 350HP) engine installed with a Bravo III X 2.20 GAS DWP drive.

While reviewing the installation, I noticed that the input shaft from the Bravo drive appears to remain partially outside the engine coupler — with about 2.5 cm (~1”) of splines still visible.

I’m not sure if this is normal, or whether the shaft is fully seated as it should be.
I’m just a concerned boat owner trying to understand if this level of engagement is acceptable.

👉 I’ve attached a few pictures to better show what I’m referring to.

Any insights would be much appreciated!

Thanks!
 

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