The Moroso 21331 Aluminum Oil Pan is engineered for Small Block Chevy Pre-’85 engines equipped with a 2-piece rear seal. Designed specifically for circle track open chassis applications, this 8-quart wet sump pan offers exceptional oil control through directional trap door baffles, a removable windage tray, and a power kickout. Its fabricated aluminum body with billet front and rear seal rails ensures precise fitment, reduced weight, and excellent durability in high-RPM racing conditions.

Moroso 21331 Oil Pan Features:

• Fits Small Block Chevy Pre-1985 engines with 2-piece rear main seal
• 7.125 in. deep, 8-quart wet sump design (plus filter)
• Designed for circle track open chassis with no crossmember under the engine
• Clears 3.800 in. stroke with most steel connecting rods
• Directional trap door baffles for controlled oil movement
• Power kickout improves oil return and reduces windage
• Removable windage tray for enhanced crankshaft windage control
• 1/2 in. NPT temperature sensor port included
• Fabricated aluminum construction with billet end seal rails for superior sealing
• Compatible with 168- and 153-tooth flywheel setups
• Works with rear or reverse driver-side offset aftermarket starters

Moroso 21331 Oil Pan Notes:

• For use in circle track open chassis applications only
• Verify rod and stroke clearance for non-standard rotating assemblies
• Check starter and flywheel alignment during installation