Powerflex PFF66-222R Engine Torque Rod To Engine Bush Auto DieselPowerflex PFF66 222R Engine Torque Rod To Engine Bush, Auto Diesel Part Number: PFF66 222R Product Notes (if required): Made in our softer Red 65A material specifically diesel automatic gearbox vehicles. For manual diesel cars use PFF66 221R. A small increase in NVH, usually at idle, should be expected when stiffening the connecting mount between the engine transmission and chassis. The harder the material used, the greater the NVH transmitted. Size