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Building a high-horsepower transmission?
This Sonnax Performance Input Shaft is what you need.
It's a brand new, heavy-duty 300M shaft designed for the 4L80E and 4L85E automatic transmissions.

It's rated to handle up to 1000 horsepower, so it's ready for serious performance builds.
\nThis is a direct replacement part, meaning it drops right in.

It's a universal fitment for these transmissions, and it's a performance part through and through.

The manufacturer part number is 34670-01, and it's made by Sonnax, a name you can trust in transmission components.
It's a vintage part?

No.

Modified?

No.

Just pure, strong, new steel.
\nIf you're pushing big power, don't let the stock shaft be your weak link.
This Sonnax 300M shaft is the upgrade that'll keep you on the road (or track).
No UPC listed, but the part number is all you need.4.9 out of 5