This kit includes the manual relay, solenoid, and a full set of glow plugs with piece parts to install. We offer both styles of glow plugs for the IDI engine, just select “blade style” or “bullet style” prior to purchase. All Diesel Care and Performance products carry a six-month warranty. Additional warranty coverage is available for purchase prior to and after sale. Diesel Care and Performance suggests fully reading and understanding the terms and conditions of our warranty policy prior to purchase and installation.