Overview
The Mag-Hytec Ford E40D/4R100 Deep Sump Transmission Pan is a painted aluminum transmission pan with extra fluid capacity, made for the E40D/4R100 transmission named in its title. It holds 7 2/3 quarts more fluid than the stock pan, which suits trucks and service vehicles that work hard and carry heavy loads.
Mag-Hytec casts the pan in A356-T6 aluminum, powder coats it black and machines cooling fins into the body. The finned design is meant to help the fluid run cooler. The overall height is 6 1/8 in, and the pan is designed so the fluid can be changed without removing it.
Key features
- Holds 7 2/3 quarts more fluid than the stock pan
- Finned aircraft aluminum body for cooling
- Magnetic drain plug to catch worn gear material
- ARP 568 O-rings for sealing
- Fluid change possible without removing the pan
- Painted black finish
Choosing a deep sump pan
A deep sump pan adds fluid volume, which gives the transmission more fluid to absorb heat during towing, hauling and stop-and-go work. The extra depth also lowers the pan’s lowest point, so ground clearance and skid protection on a truck should be checked before fitting. Measure the space under the transmission and compare it with the new pan’s height.
Several parts are often replaced alongside a pan. The filter or screen should be inspected or replaced at the same time, and new O-rings or a gasket should be used when the old seal is damaged. Clean the magnet at every fluid service, and look at the old fluid for metal flakes or a burnt smell before deciding whether the transmission needs further work. Torque the pan bolts to the value in your service manual.
Specifications
| Brand | Mag-Hytec |
|---|---|
| Transmission code | E40D/4R100 (from title) |
| UPC | 70000402526 |
| Extra capacity | 7 2/3 quarts over stock |
| Overall height | 6 1/8 in |
| Material | A356-T6 aluminum, aircraft aluminum body |
| Finish | Painted, powder coated black |
| Hardware | 303 stainless steel |
| Drain plug | Magnetic, included |
| Fitment tag | Universal Fit |
Vehicle fitment
Confirm fit for your vehicle’s year, model and trim before ordering. Check the transmission code on your unit against E40D/4R100 before installation. Verify pan clearance against your truck’s crossmember and driveline before fitting.
Pans for other transmission codes are separate parts and are not covered by this one. Confirm your vehicle’s year, model and trim before ordering.
Installation notes
Mag-Hytec says most applications need no gasket or sealant, because each unit is fitted with ARP 568 O-rings. Inspect the O-rings and sealing surface before fitting the pan. Check the magnetic drain plug for debris at each fluid change.
What’s included
The pan comes with its magnetic drain plug, and each unit is fitted with ARP 568 O-rings.









