Mopar Performance hydraulic lash adjusters can add a little more dash to your overhead-cam 2.2/2.5 by delivering improved lash control. They are more resistant to aeration, and will work in the 2.4L DOHC engine as well. Spacers required when used in 8-Valve 2.2/2.5 liter engines. Just add them in the drop down box. Note that these adjusters are sold in sets of four and the spacers are sold in sets of 8.