Bulletproofing a 6.0 refers to the process of addressing the main problem areas of the Ford 6.0L Power Stroke engine to improve its reliability and extend its life. According to BulletProof Diesel, a 6.0L Power Stroke is considered "bulletproofed" when at least four of the five main problem areas have been addressed. These five areas are the oil cooler, EGR cooler, head studs, fuel injection control module (FICM), and water pump. The following are some of the parts that are commonly used to bulletproof a 6.0L Power Stroke engine:

• BulletProof Engine Oil Cooler
• BulletProof EGR Cooler
• BulletProof Water Pump
• BulletProof FICM
• ARP Head Studs

To determine if a 6.0L Power Stroke has been bulletproofed, one can check if it has an external engine oil cooler, head studs, an upgraded EGR cooler, FICM, or water pump. It is worth noting that the use of EGR cooler delete kits or the "improved" Ford oil cooler alone does not make a 6.0L Power Stroke engine bulletproof.