Cast AND Machined in the USA!

Designed for swaps in to F-bodies (1st - 3rd), G-bodies, A-bodies, street rods & trucks

Sand cast aluminum ls oil pan – no leaking from fabricated/welded seams

Thick cast pan rail maintains the pan as a stressed member

Innovative oiling circuitry with -10AN fittings eliminates need for expensive adapters for remote oil coolers & oil filter

Uses production pan gasket for perfect seal

Maintains factory oil filter location

Cored and baffled for excellent oil control in Pro Touring, Auto Crossing & Road Racing applications

“Cast-in” clearance fits most production windage trays or Mast LS short stroker windage tray

Short front pan depth fits any chassis

Optimum sump balances oil capacity and tight fit/low ground clearance for most applications

Sump baffle cover included

Oil drain on driver side of sump

Runs standard GM oil filters

Optional remote cooler fittings for easy, inexpensive oil routing options

Optional cap and fittings for remote filter and cooler routing options

Includes oil pickup to fit almost any stroke

Enlarged oil passage holes for reduced oil pressure losses

Internal cross drill eliminates external oil loop cap when using standard filter

Production GM pressure relief valve bypass built into pan

Holds 5.5 quarts of oil

Notes: Includes Mast Oil Pump Pick-up, Oil Pan to Block Bolts, 12570788 Oil Dipstick, 12570787 Oil Dipstick Tube and 19210283 PF46E Oil Filter.

Installation parts that can be reused from existing oil pan

12584922 Oil Pump Pick-up Tube O-ring Seal
11516521 Oil Pick-up Tube to Oil Pump Bolt
12612350 Oil Pan to Block Gasket

Mast oil pan upgrade and conversion parts

401-112 Remote Oil Cooler Fitting Package
401-112A External Oil Accumulator Fitting
401-113 Remote Oil Filter Conversion Package

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Mast Motorsports 401-111 LS Conversion Oil Pan

  • $425.99