{"product_id":"mast-motorsports-ls-swap-oil-pan-high-clearance-4-250-stroke-no-pan-only","title":"Mast Motorsports LS Swap Oil Pan - High Clearance 4.250\" Stroke - No - Pan Only","description":"ETA unknown (updated June 2026, out of stock since January 2025). Despite what Google says we do not have these in stock due to no ETA from Mast!\n***Free shipping within the 48 states***\nCast AND Machined in the USA!\nThe Mast LS Swap oil pan will greatly simplify the installation of an LS engine into your car or truck.  Don't cut corners on the most important part of your engine, LS Swap with Mast!\nThese offer up to a 4.250\" stroke when using the Mast windage tray. This is perfect for your high-cube LSX or other LS engine. \nSand cast aluminum ls oil pan – no leaking from fabricated\/welded seams\nTHE most universally designed LS engine swap conversion oil pan ever\nDesigned for swaps in to F-bodies (1st - 3rd), G-bodies, A-bodies, street rods \u0026amp; trucks. They also fit most all aftermarket muscle car \u0026amp; truck chassis!\nThick cast pan rail maintains the pan as a stressed member\nInnovative oiling circuitry with -10AN fittings eliminates need for expensive adapters for remote oil coolers \u0026amp; oil filter\nUses production pan gasket for perfect seal (Sold Separately, GM Part Number 12612350)\nMaintains factory oil filter location\nCored and baffled for excellent oil control in Pro Touring, Auto Crossing \u0026amp; Road Racing applications\n“Cast-in” clearance fits most production windage trays or Mast LS short stroker windage tray\nShort front pan depth fits any chassis\nOptimum sump balances oil capacity and tight fit\/low ground clearance for most applications\nSump baffle cover included\nOil drain on driver side of sump\nRuns standard GM oil filters\nOptional remote cooler fittings for easy, inexpensive oil routing options\nOptional cap and fittings for remote filter and cooler routing options\nIncludes oil pickup to fit almost any stroke (Up to 4.250\")\nEnlarged oil passage holes for reduced oil pressure losses\nInternal cross drill eliminates external oil loop cap when using standard filter\nProduction GM pressure relief valve bypass built into pan\nThe following parts are required to complete your oil pan installation if you do not select the Oil Pan Kit in the dropdown:\nDipstick - GM Part Number 12551581\nDipstick Tube - GM Part Number 125551577\nLS Oil Pan Gasket (Can reuse factory) - GM Part Number 12612350\nOil Filter - AC Delco PN PF-46 or Equivalent\nIf you DO select the Oil Pan Kit, it comes complete with the following components:\nMast LS Oil Pan\nMast Stroker Windage Tray (4.250\" clearance)\nDipstick and Dipstick Tube (ACDelco)\nOil Filter (ACDelco)\nOil Pan Gasket (ACDelco)\nOil Pan Bolts\nIf using a Remote Oil Cooler, Oil Filter or Accumulator you MUST use Mast Motorsports specially designed fittings. Failure to use the Mast fittings will result in engine failure.\nOwners Manual","brand":"My Store","offers":[{"title":"Default Title","offer_id":67611499299132,"sku":"MAST-LSPAN","price":489.99,"currency_code":"USD","in_stock":true}],"url":"https:\/\/specbuiltls.com\/products\/mast-motorsports-ls-swap-oil-pan-high-clearance-4-250-stroke-no-pan-only","provider":"My Store","version":"1.0","type":"link"}