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Thumbnail Filmstrip of 6.7 Powerstroke Dana M300 11.8 Inch 14-Bolt Heavy Duty Rear Differential Cover PPE 338051810 Images
Ford Super Duty Dana M300 14-Bolt Heavy-Duty Cast Aluminum Rear Diff Cover Installation Guide
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PPE 338051810 Heavy-Duty Cast Aluminum Rear Differential Cover – Brushed (Dana M300 11.8" 14-Bolt)
Upgrade the rear axle on your 6.7L Powerstroke Super Duty with the PPE Heavy-Duty Cast Aluminum Rear Differential Cover (part #338051810). This brushed-finish cover replaces the factory stamped-steel unit on Dana M300 11.8-inch 14-bolt axles, delivering better cooling, greater fluid capacity, added strength, and improved long-term protection for trucks that tow, haul, or see hard use.
Why Upgrade?
Excessive heat breaks down gear oil, accelerates wear on gears and bearings, and can damage limited-slip clutches and friction modifiers. The PPE cover addresses this with a high-capacity design and superior heat dissipation so your differential stays cooler and lasts longer under load.
Key Features
- Premium A356.0-T6 heat-treated cast aluminum construction for high strength and excellent thermal conductivity
- Increases fluid capacity by 0.8 quarts for greater thermal capacity
- Half-inch external cooling fins that improve heat rejection, lower fluid temperatures, and add impact resistance
- Precision-placed internal windage scrapers that direct fluid onto the gears, reduce churning/aeration, cut parasitic power loss, and help control heat
- External fins + internal scrapers create a strong cross-bracing structure
- Cast-in gussets that reinforce the differential housing flange and increase overall rigidity
- 304 stainless steel fill and drain plugs with high-temperature neodymium magnets and Viton/fluoroelastomer O-rings to capture ferrous particles and resist leaks
- Brushed finish
- Precision-cast using permanent steel molds for consistent quality and fit
Fitment
Designed for 2017–2026 Ford F-350 / F-450 / F-550 Super Duty Dual Rear Wheel (DRW) trucks equipped with the Dana M300 11.8" 14-bolt rear axle (including 6.7L Powerstroke applications).
Important fitment note: The Dana M275, M300, and M315 covers look very similar and all use 14 bolts. Verify your axle type and ring gear size before ordering. OEM reference: Ford LC3Z-4033-C / LC3Z4033C.
This is a direct-fit heavy-duty upgrade that helps your Super Duty run cooler and stronger when you’re working the truck hard. Limited lifetime warranty from PPE.
PPE 338051810 Heavy-Duty Cast Aluminum Rear Differential Cover – Brushed (Dana M300 11.8" 14-Bolt)
Upgrade the rear axle on your 6.7L Powerstroke Super Duty with the PPE Heavy-Duty Cast Aluminum Rear Differential Cover (part #338051810). This brushed-finish cover replaces the factory stamped-steel unit on Dana M300 11.8-inch 14-bolt axles, delivering better cooling, greater fluid capacity, added strength, and improved long-term protection for trucks that tow, haul, or see hard use.
Why Upgrade?
Excessive heat breaks down gear oil, accelerates wear on gears and bearings, and can damage limited-slip clutches and friction modifiers. The PPE cover addresses this with a high-capacity design and superior heat dissipation so your differential stays cooler and lasts longer under load.
Key Features
Premium A356.0-T6 heat-treated cast aluminum construction for high strength and excellent thermal conductivity
Increases fluid capacity by 0.8 quarts for greater thermal capacity
Half-inch external cooling fins that improve heat rejection, lower fluid temperatures, and add impact resistance
Precision-placed internal windage scrapers that direct fluid [...]
PPE 338051810 Heavy-Duty Cast Aluminum Rear Differential Cover – Brushed (Dana M300 11.8" 14-Bolt)
Upgrade the rear axle on your 6.7L Powerstroke Super Duty with the PPE Heavy-Duty Cast Aluminum Rear Differential Cover (part #338051810). This brushed-finish cover replaces the factory stamped-steel unit on Dana M300 11.8-inch 14-bolt axles, delivering better cooling, greater fluid capacity, added strength, and improved long-term protection for trucks that tow, haul, or see hard use.
Why Upgrade?
Excessive heat breaks down gear oil, accelerates wear on gears and bearings, and can damage limited-slip clutches and friction modifiers. The PPE cover addresses this with a high-capacity design and superior heat dissipation so your differential stays cooler and lasts longer under load.
Key Features
- Premium A356.0-T6 heat-treated cast aluminum construction for high strength and excellent thermal conductivity
- Increases fluid capacity by 0.8 quarts for greater thermal capacity
- Half-inch external cooling fins that improve heat rejection, lower fluid temperatures, and add impact resistance
- Precision-placed internal windage scrapers that direct fluid onto the gears, reduce churning/aeration, cut parasitic power loss, and help control heat
- External fins + internal scrapers create a strong cross-bracing structure
- Cast-in gussets that reinforce the differential housing flange and increase overall rigidity
- 304 stainless steel fill and drain plugs with high-temperature neodymium magnets and Viton/fluoroelastomer O-rings to capture ferrous particles and resist leaks
- Brushed finish
- Precision-cast using permanent steel molds for consistent quality and fit
Fitment
Designed for 2017–2026 Ford F-350 / F-450 / F-550 Super Duty Dual Rear Wheel (DRW) trucks equipped with the Dana M300 11.8" 14-bolt rear axle (including 6.7L Powerstroke applications).
Important fitment note: The Dana M275, M300, and M315 covers look very similar and all use 14 bolts. Verify your axle type and ring gear size before ordering. OEM reference: Ford LC3Z-4033-C / LC3Z4033C.
This is a direct-fit heavy-duty upgrade that helps your Super Duty run cooler and stronger when you’re working the truck hard. Limited lifetime warranty from PPE.