New Lisle 5pc Injector Rail Fuel Line Cap Set for Duramax, Cummins & Ford #10810 Caps Used to Block Off the Fuel Rail During Fuel Pressure Diagnostics in 2003-2022 Cummins, 2001-2022 Duramax, and 2008-2022 Ford Engines.Helps in identification of faulty diesel fuel injectors and used to diagnose engine knock sounds. Install the cap on the fuel rail in the place of the injection line. When the cylinder with the failed injector is capped, the rail pressure will rise and the vehicle will start. Set comes with five different caps. Check out my other items! Be sure to add me to your favorites list! I do Combine shipping whenever possible! All you need to do is buy the items you want, then “Request the Total”. I will send you an invoice with combined shipping ASAP! I check my emails often! If you need a quote for combined shipping cost feel free to email me anytime! Attn: International Buyers,All Power Tools and chargers come with a Standard 120V US Electrical Plug. All posted US shipping rates ( including Free shipping when available) applies to the Continental 48 states ONLY!For shipping to Hawaii, Alaska and other islands please email for shipping quote. Thanks, Nate’s Tools and More Warning: This product can expose you to or may contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.