A343F Solenoid Kit 2001-04, new and ready to install. Fits the A343F. Ships fast from the USA.
This kit is aimed at the V8 trucks of the early 2000s: the 2001-2004 Tundra and Sequoia with the 4.7-liter engine, plus 4Runner, Tacoma and Land Cruiser models of the same era. If yours has started holding a gear, flashing the O/D OFF light, refusing to downshift for a pass or cruising at high rpm because the converter never locks, the electrical side of the valve body is the first place to look. The kit gives you all three valve body solenoids, a new pan filter and a cork pan gasket.
The A343F name strictly belongs to the 4x4 version used in the 100-series Land Cruiser and LX 470. The Tundra 4x4 is listed with the A340F, and the Sequoia with the A341F, which adds a lockable center differential in the transfer case. Inside the main case they share the same idea: two on/off shift solenoids, S1 and S2, and one lockup solenoid, SL. The computer sets S1 and S2 to one of four patterns to pick first through fourth, and SL feeds the converter clutch once the truck is in a high gear at light throttle. The 2000-later trucks got a redesigned valve body, and the V8 electronic throttle versions carry their own casting, which is one reason a 1990s kit is not a safe swap.
V8 trucks put more heat into the fluid, especially when towing. Hot, oxidized fluid is hard on the small screens and plungers in these solenoids, which is why a solenoid that tests fine cold can stick once the truck has been working.
Start with fluid condition and level, then the wiring. In a well-known Tacoma case a loose ground bolt put voltage on the S2 circuit and set P0755 even after the solenoid, valve body and computer had all been replaced. Inspect the harness where it passes the exhaust and the transfer case, clean the grounds, and measure each solenoid with a meter both cold and after a drive. Our guide to bench testing transmission solenoids explains how to check flow as well as resistance, which catches a plunger that sticks only under pressure. If you do not have a scan tool, testing solenoids without a factory scan tool covers a workable method.
Supplied for 2001-2004 Tundra with the V8, 2001-2004 Sequoia, 2000-2004 4Runner 4WD and 2002-2004 4Runner 2WD, 2000-2004 Tacoma 4WD, and 2000-2002 Land Cruiser. The listing is titled 2001-04, matching the Sequoia and V8 Tundra years. Earlier 1985-1999 units use a different valve body, and Toyota also differed between V6 and V8 and between two- and four-wheel drive, so match your old solenoid body, bracket and connector to the photo before installing, or send us the year and VIN. A 2000-2004 version of this kit is also listed, and the rest of the family is in the Aisin parts collection.
If the shifts remain harsh after this service, the TransGo A340 HD2 reprogramming kit addresses valve body wear that solenoids cannot.
| Fits | A343F 2001-04 |
| Part type | Solenoid Kit |
| Condition | New |
| Brand | OEM |
| Reference | A340E |
| Ships | From the USA |
| Warranty | 1-year |
Yes, the 2001-2004 Sequoia is on the supplied fitment list. The Sequoia uses the A341F, which is the A340F with a lockable center differential, and shares the S1, S2 and SL solenoid layout in the main case. Send us your VIN if you want it double checked.
The kit is sold under the A343F name, but the late A340F, A341F and A343F units all use the same three-solenoid layout. What matters is your year, engine and drive type, which is why we list the trucks, not just the transmission code.
Two shift solenoids, the torque converter lockup solenoid, a pan filter and a cork pan gasket.
Yes. A solenoid can pass a resistance test and still stick when hot or flow poorly through a clogged screen. A flow test on the bench, or a road test that reproduces the fault hot, tells you more than a cold meter reading.
A pan drop only replaces part of the fluid, typically a few quarts. Have enough Toyota Type T-IV ATF on hand to refill what you drained plus a little extra, and top off to the hot mark on the dipstick.
