Detroit Diesel 60 Series 14L EGR Piston Ring Compressor Installer Tool J-46929. Part Type:Installer Tool. Direct replacement to OEM part number J-46929 or J46929. For 60 Series 14L J-46929 EGR Piston Ring Compressor Remover and Installer Tool. This Tool is Used to Assist During Piston Installation On 60 Series 14.0L Forged Steel Pistons. Prevents Damage And Allows Efficiency. · Please read the item description and check the pictures carefully before ordering.