Industrial Injection BICR5967OP Big Iron Engine Oil Pan Cummins - 5.9L/6.7L

The Industrial Injection BICR5967OP Big Iron Engine Oil Pan is a heavy-duty replacement oil pan engineered for 2003–2018 Dodge Ram trucks equipped with the 5.9L or 6.7L Cummins diesel engine. Designed to deliver more complete oil drainage and improved structural durability over the factory pan, the Big Iron is a popular upgrade for diesel owners seeking a long-lasting, performance-ready solution.

Key Features:

• Four drain holes through the drain nut bung — allows the engine oil to drain completely, minimizing residual oil left in the pan during changes
• Thicker reinforced mounting lip — adds structural rigidity and a more secure, leak-resistant seal compared to the OEM pan
• Designed for Gorilla Girdle-equipped engines — compatible with builds running main studs and a Gorilla Girdle; features a pressed indentation at the rear of the pan to clear the girdle without modification
• Direct-fit replacement design — engineered to drop in without cutting or welding

Installation Notes:

• Requires the longer 6.7L oil pan bolts (not included) due to the thickened reinforced lip — these are longer than standard 5.9L oil pan bolts
• On certain 6.7L Cummins engines equipped from the factory with a windage tray instead of a factory girdle, early-style longer oil pickup tube bolts and an early-style oil pickup tube are required
• Compatible Cummins oil pickup tube: Part #3949692 (qty 1); oil pickup tube bolts: Part #3902460 (qty 2)
• Depending on main stud block depth, bottom tapping of the block may be required for main studs to clear the pan when running 12mm or 14mm Gorilla Girdles

Industrial Injection is a trusted leader in the diesel performance industry, specializing in the distribution, supply, and remanufacturing of high-quality diesel fuel systems, turbochargers, and engine components. The Big Iron Oil Pan reflects their commitment to durability and precision engineering for serious diesel applications.