The Moroso 27336 is a heavy-duty, direct-fit replacement engine oil pan engineered specifically for 1994–2003 Ford F-250, F-350, F-450, and F-550 trucks, 2000–2003 Ford Excursions, and 1994.5–2003 Ford E-Series vans equipped with the 7.3L Powerstroke diesel engine. Stamped from extra-thick 16-gauge steel, this pan is substantially thicker and more structurally rigid than the failure-prone factory OE pan. To permanently eliminate rust-through perforations, Moroso subjects each pan to an extensive three-step coating process: an initial zinc phosphate wash, followed by a 1-mil electrocoat (E-coat), and finished with a durable gloss black epoxy powdercoat. Additionally, the pan features an OEM-style anti-slosh internal baffle to control oil slosh during hard braking or acceleration, along with a magnetic drain plug to trap ferrous metal particles.

Severe oil leaks caused by factory 7.3L oil pan rot, rust perforations along the sump walls from road salt, cracked pan flanges, and oil starvation during extreme braking or steep inclines are what this heavy-duty pan eliminates. The thin, painted factory Ford 7.3L oil pans are notorious for rusting through from the outside in—especially in snow-belt regions—often requiring a complete engine pull to replace. The Moroso 27336 utilizes industrial-grade corrosion protection proven through rigorous salt-spray testing, ensuring the pan withstands road chemicals, brine, and gravel blast without peeling or rusting. It is a complete replacement steel oil pan including a 14mm x 1.5 magnetic drain plug (with a 17mm hex head); engine sealant (Motorcraft TA-31 RTV silicone) or reusable aftermarket one-piece oil pan gaskets and oil dipstick flange repair kits are sold separately.

It fits 1994–1997 Ford OBS and 1999–2003 Super Duty F-250, F-350, F-450, and F-550 pickup and chassis-cab trucks, 2000–2003 Ford Excursions, and 1994.5–2003 Ford E-Series vans equipped with the 7.3L Powerstroke turbo diesel engine (rear sump configuration).

Fitment

• 1994–1997 Ford F-250 / F-350 7.3L Powerstroke Turbo Diesel (OBS)
• 1999–2003 Ford F-250 / F-350 / F-450 / F-550 Super Duty 7.3L Powerstroke Turbo Diesel
• 2000–2003 Ford Excursion 7.3L Powerstroke Turbo Diesel
• 1994.5–2003 Ford E-250 / E-350 / E-450 Econoline Van 7.3L Powerstroke Turbo Diesel
• Rear sump configuration engineered specifically for 7.3L Powerstroke applications
• Stamped from heavy-duty 16-gauge steel (significantly thicker than OEM pan)
• Triple-coated anti-corrosion finish: zinc phosphate, 1-mil E-coat, and gloss black epoxy powdercoat
• Extensive salt-spray tested to prevent road salt rust-through and leaks
• Internal OEM-style anti-slosh baffle keeps oil centered around the pickup tube
• Includes 14mm x 1.5 magnetic drain plug with 17mm hex head to capture metal debris
• Direct bolt-on replacement for factory Ford oil pan

Because the engine crossmember sits directly underneath the rear sump on 7.3L trucks, safely pull the engine using a heavy-duty engine hoist or raise the engine several inches off the motor mounts after unbolting the transmission crossmember and motor mount through-bolts. With the engine mounted on a sturdy stand (or secured safely upward), remove the drain plug and drain all remaining engine oil completely into a catch container. Remove the oil dipstick adapter nut from the side of the pan and push the adapter into the crankcase cavity (or use an external repair kit upon reassembly). Remove the perimeter oil pan retaining bolts, break the factory silicone seal using a gasket separator or stiff putty knife, and lift the old oil pan off the block. Thoroughly scrape all residual factory RTV sealant from the lower engine block rails, front cover, and rear main seal retainer surfaces, wiping the mating surfaces completely clean and dry with brake cleaner. Lay down a continuous, uniform 1/4-inch bead of Motorcraft TA-31 high-temp diesel RTV silicone around the entire pan mounting flange (circling the inside of each bolt hole), or install an approved aftermarket molded rubber oil pan gasket. Align the Moroso pan over the crankcase, guide the dipstick adapter through the side port, and install all perimeter bolts finger-tight. Working from the center bolts outward in an alternating crisscross pattern, torque all oil pan bolts to 15 ft-lbs (180 in-lbs), allow the RTV to fully cure for 24 hours before adding fresh 15W-40 or 5W-40 diesel engine oil, and check for leaks upon first startup.