A340E Clutch Drum, used and ready to install. Fits the A340E. Ships fast from the USA.
If your Toyota 4Runner, Pickup, T100, Supra, Cressida or Lexus with the A340E four-speed takes a long time to catch reverse, flares into third, or came apart with a scored direct clutch housing, this is the part you are looking for. This is a used, inspected A340E direct clutch drum, the housing Toyota labels C2. It comes with its four clutch discs installed. The bushing is in good shape, the sealing ring surfaces are smooth, and the band surface on the outside of the drum has no pitting or heat marks.
The A340E is a rear-wheel-drive four-speed built from an overdrive planetary unit in front of a three-speed planetary set. Toyota's factory manual describes the direct clutch (C2) as the element that connects the input shaft to the front and rear planetary sun gear. That connection is used in reverse and in the higher gears. When the C2 pack applies, the sun gear turns at input speed.
The drum also has a second job. The 2nd coast brake (B1) is a band, and the factory manual says it holds that same front and rear sun gear from turning. The band clamps on the smooth outer surface of this drum. This is why a builder checks two things on a used C2 drum: the inside, where the piston, clutch plates and sealing rings live, and the outside band surface. A drum that is cracked, blued from heat or worn at its sealing ring bores bleeds off apply pressure, and the clutches in it slip no matter how new they are.
The factory manual gives three simple checks. First, time the shift from neutral to reverse at idle with the fluid hot. Toyota's limit is under 1.5 seconds, and a longer lag lists a worn direct clutch as a cause. Second, a stall test that runs high in R but normal in D points to the direct clutch or the first and reverse brake slipping. Third, line pressure that is low in R only points to the reverse circuit, the direct clutch or the first and reverse brake. Check the fluid level and pressure first; our guide to checking transmission line pressure covers the gauge hookup, and Aisin slipping under load covers other slip causes in this family.
This drum is identified as an A340E part. Toyota used the A340E in two-wheel-drive trucks and rear-drive cars from the mid-1980s into the early 2000s, including the 4Runner, Pickup, Tacoma, T100, Supra, Cressida and Lexus models. The four-wheel-drive A340F, A340H and A343F versions are close relatives but are not the same transmission. Toyota also changed internal parts across the years and engine sizes. Before ordering, compare your old drum against the photos: overall height, spline count, bushing size and the number of clutch discs. This drum holds four. If you are not sure, send us your year, VIN and the transmission tag, and we will help you confirm the match. You can see every part we stock for this family on the Aisin and Toyota transmission parts page.
If the slip came with harsh or late shifts, look at the valve body as well. The A340E valve body and the A340E shift solenoid kit are the usual next steps when the hard parts check out.
| Fits | A340E |
| 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.
It is the direct clutch drum, Toyota's C2. It links the input shaft to the front and rear planetary sun gear for reverse and the upper gears. The 2nd coast brake band wraps around its outside.
Yes. It has four clutch discs installed, and they showed no visible wear at inspection. Most rebuilders still install fresh frictions, steels and seals so the whole pack is new.
This drum is listed as an A340E part. The 4WD trucks use the A340F, A340H or A343F, which are related but not the same transmission. Compare the drum height, splines, bushing and disc count with your old part, or send your year, VIN and tag number and we will check it.
Both slip in reverse, so the factory tests point to either one. Problems in third and overdrive too point toward the direct clutch, because the first and reverse brake is not used in those gears. Final confirmation comes from an air check with the transmission apart.
Use what your vehicle's manual specifies. Early A340E trucks called for Dexron II, and later applications call for Toyota Type T-IV. Fill to the hot range on the dipstick with the engine idling.
