Windage Tray - Oil Pan LS1

The Windage Tray for LS1 oil pan by CHEVROLET PERFORMANCE is an essential internal engine component designed to control oil windage losses and stabilize lubrication efficiency in high-performance LS1 engines. This tray sits beneath the crankshaft and reduces the churning effect that occurs when rotating counterweights and rod journals contact pressurized oil during operation. Whether you're running stock power levels or pushing boost through a supercharger, oil management directly impacts bearing life, cooling, and consistent horsepower delivery—making this OEM-engineered component a foundational upgrade for any serious LS1 build.

Manufactured to original CHEVROLET PERFORMANCE specifications, this windage tray features a precisely formed steel construction that integrates seamlessly with the LS1 oil pan assembly. The tray's geometry deflects aerated oil away from rotating engine internals, reducing drag losses and allowing more consistent oil flow to critical bearing surfaces. At just 2.7 lbs, the compact 8.3 x 3.2 x 16.5 inch design fits cleanly within the pan without compromising capacity or requiring modifications to the oil pickup tube. This engineering approach minimizes parasitic loss—typically recovering 3–5 horsepower on the dyno while extending drain intervals by improving thermal stability and reducing oxidation.

Owners of LS1-powered vehicles—from Corvettes and Camaros to street rods and swap platforms—benefit most from this component during sustained high-RPM running, track days, or forced-induction applications where oil temperatures and blow-by gases intensify. Installation requires oil pan removal and seats directly into the pan casting, making it a straightforward job during a pan gasket service or full engine build. Compatibility is confirmed for all LS1 variants, and the original equipment part number 12558253 ensures fitment without modification. This is a quiet performance essential that separates dialed-in engines from marginal ones.