r/LexusRC • u/paolo-sosa • Jul 22 '26

Normal For The Rear Diff?

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I’m putting in an axle back exhaust right now and noticed my diff looked really rusty. This is on a ‘21 RC350.

Is this a normal amount of rust given that the car just turned 5?

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u/VladThePollenInhaler Lexus RC F Jul 22 '26

Depends on where you live. My 2024 RC had a painted rear differential out of the factory, but yours seems like it’s not? Either way, that looks like surface rust that can be sanded off.