Description
Premium aftermarket replacement oil pan from PAI Industries. The 841203 is a steel rear-sump pan with a silver EDC finish, 11.50 in overall depth and a single port, and it ships with the M20 x 1.5 drain plug installed. It replaces Mack 240GB5263M7 on E7, E-Tech and ASET 12L engines.
Signs You Need a New Oil Pan
- Oil dripping or pooling from the lowest point of the engine, heaviest right after shutdown, with a wet film tracking along the pan rail or drain boss
- Visible impact damage — a dent, crease or gouge from road debris, a curb strike or bottoming out
- Stripped or leaking drain plug threads that a new sealing washer will not stop
- Rust-through, pinholes or weeping at the lowest seam or drain boss, common in road-salt regions
- Pan flange no longer flat, with elongated bolt holes, so a fresh gasket starts leaking again within days
Specifications
| Manufacturer | PAI Industries |
|---|---|
| Part Number | 841203 |
| Part Type | Oil Pan, Rear Sump |
| Engine Compatibility | Mack E7, E-Tech (1997–2002) and ASET (2002–2007) 12L |
| Material | Steel, silver EDC finish |
| Sump Position | Rear, wet sump |
| Length | 41.88 in |
| Width | 18.88 in |
| Depth | 11.50 in |
| Ports | 1 |
| Mounting Holes | 30 |
| Drain Plug | Included, M20 x 1.5 |
| Gasket | Not included |
Cross References
This part replaces or is equivalent to the following part numbers:
- Mack: 240GB5263M7
- Mack: 25503752
Applications
This oil pan fits Mack 12L engines found in:
- Mack E-Tech engines, 1997–2002
- Mack ASET engines, 2002–2007
- Mack E7 engines
Verify fitment with your VIN or engine serial number and configuration before ordering. Mack built three pans in this family and they are not interchangeable: 240GB5263M7 is this pan at 11.50 in deep with 1 port; 240GB5263M5 is PAI 841202 at 12.05 in deep with 6 ports; and 240GB5263M6 is PAI EOP-2045E. The depth and port count are the reliable way to tell them apart. Oil capacity is not published consistently for this pan, so do not size a fill from a catalog figure.
