The Bullet Proof Diesel 6.7L Power Stroke Oil Cooler is designed to provide increased cooling capability for trucks that experience heavy tow or heavy load conditions. According to the company, this unit features up to a 20 percent increase in surface area compared to the OE unit. Larger than stock coolant pathways within the oil cooler resist plugging caused by debris in coolant. A direct fit, bolt-on replacement, the BulletProof 6.7L Oil Cooler can be, in most cases, installed in approximately an hour with common tools, the company says.