otolyle r134a r1234yf r454b valve core tool, 59pc air conditioning valve core remover installer tool set, high low pressure ac valve core quick remover installer(ac r454b r22 r134a r1234yf) r1234yf & r134a is up for auction in Automotive. The current bid is $1.00, 97% below the $34.99 MSRP, in Good Condition. This auction has ended — similar items appear in live auctions regularly.