NGK Standard Spark Plugs. Shown below is an over torqued spark plug that sheered due to user installation error. NGK states that incorrect torque values are responsible for up to 90% of all spark plug warranty claims.
2x NGK BR9ECS 3570 Standard Spark Plugs
5x NGK Glow Plugs for VW CRAFTER 2E 2.5 CHOICE2/2 06->13
5x NGK ILFR6B 6481 Laser Iridium Spark Plugs For VOLVO V70 2.5 07/03-->04/07
5x NGK ILFR6B 6481 Laser Iridium Spark Plugs For FORD S-MAX 2.5 03/06-->12/10
5x NGK Glow Plugs for VW TRANSPORTER T4 2.4 90->03
5x NGK B-4 3210 Standard Spark Plug