6R80 Clutch Drum 2005, used and ready to install. Fits the 6R80. Ships fast from the USA.
If your F-150, Expedition, Navigator or Mustang 6R80 flares on the 2-3 upshift, slips in 5th, or takes its time engaging reverse, the clutch that ties all three of those complaints together is the 3-5-R clutch, which Ford and the rebuild trade call the B or direct clutch. This listing is a used OEM B clutch drum, interchange number 49555B. It is described as the 5-clutch version, 7-5/8 inches tall, with a 30-tooth ring gear. The "2005" in the title is the start year of the ZF 6HP26 design family this drum comes from, not a 6R80 build year. Ford did not put the 6R80 into production until 2009. It carries a 1-year warranty.
The 6R80 builds its six speeds from four clutch packs and a one-way clutch. Sonnax's 6R80 apply chart puts the 1-2-3-4 (A) clutch on in 1st, adds the 2-6 (C) clutch for 2nd, then applies the 3-5-R (B) clutch as the 2-6 releases to make 3rd. B stays on in 5th and reverse. This drum is the housing for that pack. It holds the five frictions and their steels, carries the apply piston and return spring, and its sealing surfaces take the oil that clamps the pack. GEARS Magazine's look at 6R80 controls also shows why B matters in a breakdown: when the PCM loses control, the unit falls back to a 3rd gear failsafe in which the direct clutch is hydraulically applied with every solenoid off.
Plenty of 6R80 shift complaints are electrical. Lead frame faults, solenoid banding drift and valve body wear can all make a healthy clutch look like it is slipping, and our 6R80 common problems guide walks through those recalls and bulletins first. Sonnax recommends watching the B and C solenoid amperage during the 2-3 shift. If B is commanded correctly and turbine speed still flares, the pack or its drum is the suspect. On the bench, air-check the B circuit and look for a slow bleed. Then heat and inspect the drum, since the Transmission Digest case below had a 6R80 pulled more than once to check the 3-5-R drum. If your symptom is on the 3-4 or 4-5 shift instead, read the 6R80 3-4 clutch failure guide, because that points at the E clutch, not this part.
The listing describes this drum as fitting the ZF 6HP26 family and the Ford 6R60, 6R75 and 6R80. On the 6R80 side that means 2009 and later F-150, Expedition, Navigator and Mustang applications. Sonnax groups the 2009-2014 6R80 with the first-generation ZF units and treats 2015-later units as a separate version, so a 2015-2017 owner should be extra careful. Before you order, measure your old drum against the 7-5/8 inch height, count the ring gear teeth (30) and the friction count (5), and compare the shaft and sealing ring layout. If anything is unclear, send us your year and VIN, or the tag from the transmission case, and we will check it. Browse the full 6R80 parts collection for the rest of the hard parts.
| Fits | 6R80 2005 |
| Part type | Clutch Drum |
| Condition | Used |
| Brand | OEM |
| Ships | From the USA |
| Warranty | 1-year |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
The listing calls it a 2005-up ZF 6HP26 family part, but Sonnax treats the 2015-later 6R80 as a different version from the 2009-2014 unit. Measure your old drum (7-5/8 inch height, 30-tooth ring gear, 5 frictions) or send us your year and VIN before ordering.
The 3-5-R (B) clutch applies in 3rd, 5th and reverse. It comes on during the 2-3 upshift as the 2-6 clutch releases.
The 2005 date refers to the start of the ZF 6HP26 design family this drum belongs to. The 6R80 itself went into production for 2009.
Replace the B frictions, steels and piston seals, plus the sealing rings that feed the drum. A master rebuild kit covers those parts. Check the bushing and set clutch clearance to spec.
Use Mercon LV in the 6R80. After the repair, clear the adaptive tables and drive the relearn cycle so the PCM can set new B clutch fill times.
