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If you're building or rebuilding a 700R4 or 4L60 transmission, this is a solid upgrade.
It's a new, aftermarket aluminum accumulator piston for the 1-2 and 3-4 shift.

This one is specifically for the large pin type, measuring .310 inches.

It comes with a high-temperature seal, which is crucial for longevity.

This is a direct replacement for a bunch of part numbers, including A74927K, A74927, 54352A, and 65128, so it's a versatile piece.

It's manufactured right here in the United States.

Using an aluminum piston can help firm up shifts and reduce the chance of the stock unit cracking under higher horsepower.
It's a simple, inexpensive part that makes a difference in a performance or stock rebuild.
4.8 out of 5