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Schumann's GM LS Street Master Oil Pump SDLSSSR15

Each Street Master LS oil pump has been professionally modified and machined for precision oiling on your LS engine. The standard LS by-pass operation is converted to a unique design internal check ball system for improved oil pressure control to the engine. All mounting locations are machined to ensure a flat surface for a perfect seal to the block and the pick-up tube. The Schumann LS oil pump includes a by-pass spring kit to select the oil pressure range you desire for your application.
  • LS Oil Pump for Wet Sump Applications
  • Pump Includes Oil Seal
  • Will Not Work with LS7, LS9 Engines or LS3 with the Dry Sump System
  • Oil pressures will vary depending upon oil temperature, oil viscosity and engine bearing clearances. Please use this chart as a reference guide only. Pump has the purple spring installed which is the most commonly used spring for most applications.
    Spring Cold Hot
    Purple 80-90psi 75-85psi
    Black 85-105psi 75-85psi
    Red 90-110psi 85-95psi
    Yellow 100-115psi 95-105psi
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Shipping: Free Shipping* On Orders Over $99!


The oil pump may be the single most important part in your engine, as if it fails, everything comes to a screeching halt. There was a time when you may have gotten away with installing a stock type replacement pump from your local auto parts store into your high performance engine. Modern engines run hotter, develop more power, turn more rpm and place much greater stresses on the oil system. You put a lot of time into choosing the right pistons, rods, heads, cam and valvetrain, etc. into your performance or racing engine, the oil system deserves just as much thought to insure the best finished project. The use of cheap stock replacement type oil pump can put your expensive performance engine at risk of damage as well as missing out on potential performance gains.

Researching and purchasing the best oil pump for your exact engine project can insure maximum torque and horsepower, minimum wear and increased reliability and durability. If you have any questions please do not hesitate to contact us and we will be happy to assist you. Do not risk failure of your engine by using a stock, mass produced, penny pinched OEM oil pump. A wise investment in upgraded oil system components will provide you with a pump that has been inspected, carefully modified and precision assembled by one of the top racing oil pump manufacturers in the country.

Verne Schumann is the innovator behind these high performance oil system components. Schumann's has proven time and again to be one of the premier high performance and racing oil pump providers in the performance parts aftermarket. They are constantly striving to advance the state of the art in performance engine wet sump oil pump technology. Schumann oil pumps provide you with the benefits of continued refinement of the wet sump oil system design. Schumann's is dedicated to designing, modifying and producing superior wet sump oil system components for a wide range of high performance and racing engines.

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Shipping Information

  • Item Requires Shipping
  • 5.0 lbs.
  • W8.0000” x H5.0000” x L8.0000”
  • Free U.S. Continental Shipping
  • Free Shipping* On Orders Over $99!

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