Pin bore wear at the 1st/2nd accumulator circuit causes leaks and burns up clutches and bands. The Sonnax oversized accumulator pin kit 54250-04K includes a reamer to oversize the piston pin bore. The oversized pin allows for tighter clearance between the pin and piston and restores the integrity of the circuit. A replacement accumulator pin kit 54250-05K is also available without the reamer, as the reamer from 54250-04K can be reused.

• Oversized pin allows for tighter clearance between pin and piston
• Reamer allows piston pin bore to be oversized
• Works with 4L30-E and both the early and late model TH180
• Restores circuit integrity