Oil Pan BBC Marine 10in Deep Sump

The MOROSO Oil Pan BBC Marine 10in Deep Sump (part number 20033) is a purpose-built engine oil pan engineered for big block Chevy marine applications requiring reliable oil capacity and deep-sump design. With a 12-quart capacity and 10-inch depth, this rear-sump configuration delivers the oil volume and retention needed for sustained offshore performance, where consistent lubrication under varied sea conditions directly impacts engine longevity and reliability.

Constructed from steel and finished in black powder coat, this marine oil pan is built to withstand the corrosive salt-air environment that rapidly degrades unprotected metal. The 10-inch depth maximizes oil reserve capacity—critical when running high-displacement marine engines that demand sustained flow rates during extended cruising or aggressive offshore conditions. The rear-sump design positions the pickup tube away from fuel contamination and foaming, a common concern in marine powerplants where fuel and oil interfaces are tighter than in automotive applications. At 26.71 lbs, the pan's mass reflects the robust steel construction and larger volume required for marine duty.

This pan is engineered for serious boaters running big block Chevy engines—fishing boats, cruisers, and offshore craft where engine cooling and oil management determine the difference between a day on the water and mechanical failure miles from port. The deep-sump profile suits vessels that encounter rough seas or extended idle periods where shallow pans risk oil starvation. Anglers and pleasure cruisers alike benefit from the extra oil volume, which reduces thermal stress during extended throttle applications and provides a buffer against temporary low-flow conditions during aggressive maneuvering.