New style steel glow plug for the Jeep Liberty CRD.
** PLEASE NOTE ** Based on customer feedback and our own testing with cold starts, we recommend the 5V plugs regardless of programming. Using 5V plugs with 7V programming will not cause a check engine light. Running 5V plugs at 7V may reduce life and will void the warranty, however, many owners have run the 5V plugs for many years so far without issue. Whatever voltage you choose, all plugs must match.