Transgo SK 340 A340 AW4 Transmission Shift Kit A341 A343 Toyota Jeep

This 340 SHIFT KIT® Valve Body Repair Kit fits 1985 and newer Toyota, Lexus, Isuzu, Mitsubishi, Hyundai, Kia and Jeep vehicles equipped with the A340, A341, A343 and AW4 series automatic transmissions. Common complaints with those transmissions are rough shifts when cold, soft shifts, lazy kickdown, TCC Slip as well as overheating.

The first area of concern leading to those complaints is a worn-out TCC relay boost valve and bushing. When the TCC relay boost valve and bushing wear out, lock-up control and overheating complaints occur. As for the other shift complains, they require recalibration of the accumulator springs, pressure regulator spring as well as the orifices in the valve body separator plate.

The kit includes a drop-in USA-made hardened steel TCC relay boost valve and bushing that will restore the hydraulic circuit integrity for type two, three and four valve bodies except some Lexus models. This hardened steel boost valve and bushing assembly provides you with a durable direct replacement for the soft aluminum OEM assembly that is prone to wear. The kit also comes with everything you need to recalibrate the accumulators, separator plate feed orifice’s and pressure regulation for a better shifting and a more durable transmission.

• Rough shifts when cold
• Soft shifts
• Lazy kickdown
• TCC slip
• Overheating on type two, three and four valve bodies due to wear at the lock-up relay valve

• USA-made hardened steel TCC relay boost valve and bushing
• Blue pressure regulator valve spring (for type one valve body)
• Orange pressure regulator valve spring and washer (for type two, three and four valve body)
• Short accumulator spacer
• Medium accumulator spacer
• Long accumulator spacer
• (2) Blue accumulator springs
• Orange accumulator spring
• White accumulator spring
• Red accumulator spring
• Plain accumulator spring
• 0.055” Drill bit