A340E A340F A343F Master Rebuild Kit for Toyota 4Runner

A complete master overhaul kit for the Toyota Aisin-Warner A340 four-speed automatic family, covering the A340E, A340F, A340H, and A343F (the AW30-40LE). It fits the 4Runner from 1989 to 2004 with the 2.4L, 2.7L, and 3.0L V6, the Supra from 1988 to 1998 3.0L, the Cressida from 1988 to 1992 in 2.8L and 3.0L, and the Crown 3.0L. The A340F and A340H are the four-wheel-drive versions that carry a transfer adapter on the tailhousing, so this kit covers both two-wheel-drive and 4WD builds.

The kit carries the soft parts a full teardown needs: friction clutch plates, oil seals and lip seals, the pan and case gaskets, sealing rings, cushion rubbers, O-rings, and the thrust washer set. On the bench you strip the unit down to the bare case, clean and inspect the hard parts, then reassemble with every friction and seal in this kit so the clutch packs hold apply pressure and the shifts come in clean. Reuse your steels and the pump if they check out, cut the clutch clearances to spec, and set band and accumulator travel per the service manual.

An A340 that slips on the 2-3 shift, flares between gears, or is slow going into overdrive is almost always worn frictions and hardened seals bleeding off pressure. A soft-parts overhaul with fresh frictions is the fix, and doing it with a matched kit keeps you from chasing one leaking seal at a time. Ships from the USA, in-stock items ship same day.