Brand: Sonnax
Other Part Number: A84937A, 84880M-01
Interchange Part Number: A84937A, 84880M-01
OE/OEM Part Number: A84937A,84880M-01
Fitment Type: Direct Replacement
Manufacturer Part Number: A84937A, 84880M-01
UPC: Does not apply
Superseded Part Number: A84937A, 84880M-01
Universal Fitment: No
Vintage Part: No
Performance Part: No
Hello, If you need assistance finding a part please supply the VIN number of your NORTH AMERICAN vehicle AND the part number you are looking for.4T65-E
3-4 Accumulator Piston
Part No. 84880M-01
It is common to have poor 3-4 shifts, no 4th gear or a burned 4th clutch in 4T65-E units. This can be caused by excessive wear at the 3-4 accumulator piston pin bore, which allows 4th clutch oil to exhaust and can result in harsh 4th, no 4th gear or a burned 4th clutch. Pin bore wear also reduces 3rd clutch pressure during 3-4 shift. The 4th shift quality depends on the condition of the piston and accumulator valves. If the 4th accumulator piston seizes, the 4th shift will be very hard. The Sonnax accumulator piston 84880M-01 restores accumulator pressure and eliminates cross leaks.
- Piston is manufactured from high-grade billet aluminum to prevent wear.
- Tight tolerances and surface finish restore proper clearances.
- Piston accepts OE or standard replacement D-Ring (not included)
Piston; 3-4 Accumulator; Aluminum
Specifications
Transmissions
| Name | Years |
|---|---|
| 4T65-AWD | 2003 - 2006 |
| 4T65-E-HD/MN7 | 1997 - 2008 |
| 4T65-E | 1997 - 2011 |
| 4T65-E-HD | 2004 - 2009 |
| 4T65-EV | 1999 - 2004 |
| 4T65-EV-GT | 1999 - 2005 |