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Instruction Sheets for Part Number MOR-21581
Moroso Ultra-Pro Aluminum Pro Modified Oil Pans
Oil Pan, Drag Race, Aluminum, Stage IV, Dry Sump, Chevy Big Block, Each
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Estimated Ship Date from Texas: Monday 10/19/2026 Would you rather pick it up?
Overview
Brand:
Manufacturer's Part Number:
21581
Part Type:
Product Line:
Summit Racing Part Number:
MOR-21581
UPC:
084663215810
Sump Style:
Dry
Oil Pan Style:
Drag Race
Rear Main Seal Style:
2-piece
Sump Location:
Full
Stroker Clearanced:
Yes
Maximum Stroke with OE Rod:
4.500 in.
Dipstick Provision:
No
Dipstick Included:
No
Oil Pan Depth (in.):
7.500
Oil Pan Material:
Aluminum
Oil Pan Color:
Natural
Baffled:
No
Kicked Out:
Yes
Windage Tray Included:
Yes
Pickup Included:
No
Oil Pump Included:
No
Oil Pump Driveshaft Included:
No
Crank Scraper Included:
Yes
Drain Plug Thread Size:
1/2 in.-20
Gaskets Included:
No
Hardware Included:
No
Quantity:
Sold individually.
Notes:
Accepts 5 in. stroke with aluminum rods.
Moroso Ultra-Pro Aluminum Pro Modified Oil Pans
Moroso Ultra-Pro aluminum Pro Modified oil pans have all of the features and designs that you need for your high-horsepower engine. They have a removable bottom section that provides quick, between-rounds access to inspect main bearings and replace pistons without removing the entire oil pan. The removable section uses a machined channel, which accommodates a reusable square O-ring rubber gasket to provide leak-free sealing. The Moroso Ultra-Pro aluminum Pro Modified oil pans are box-style, all-aluminum pans featuring a maximum-size power kickout, a unidirectional windage tray screen, a block-high crankshaft scraper, and internal baffling. Designed for 2-piece rear main seal Donovan-style big block Chevrolet engines, Moroso Ultra-Pro aluminum Pro Modified oil pans give you the strength, reliability, and access that you need for your engine.
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Some parts are not legal for use in California or other states with similar laws / regulations
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