This info stolen from a Yotatech thread:

"A340h solenoid kit

I changed the solenoids in my A340h tranny November '05 and it took me three hours. I ordered the solenoids from Axiom Automotive Technologies, Inc. 1360 Ingleside Road Norfolk, VA. 23502 (800)-622-6997. The solenoid kit ( 97420K) has all 4 solenoids and cost me $179.77 plus tax. I figured I'd change all four since I was in their and did not want to do it again for another 20 years- the solenoids I replaced were original. Hope this helps."

1988 4Runner 22R-E W56
1989 4Runner 22R-E A340
1995.5 Rodeo 3.2L 5spd
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