Billet Aluminum LS Oil Pressure Relief Valve Plug Machined For Knockout Engine Blocks And LS Swap Builds Offer Zero Leak Guarantee With Tough Corrosion Resistant Silver Finish Built For Real American Muscle Cars And Hot Rods

High performance ls engine oil plug upgrade
✔️ CNC machined billet aluminum stops oil seepage perfectly

This aftermarket relief plug shuts off unwanted gaps on ls series and small block gm crankcases. They swap out cheap steel inserts that tend to bend when the RPMs climb. Hot rodders drop these into knockout blocks to keep the oil pump flowing smooth during tough runs.

✅ Precision milled billet aluminum construction
✅ Corrosion resistant silver protective finish
✅ Direct fit for standard knockout oil passages
✅ Maintains steady crankcase pressure under load
✅ Designed for street stripped race applications

💡 How does a sealed aftermarket relief plug improve flow on gm ls based powerplants?
Dropping in solid metal inserts halts weak steel parts from spinning loose when things get hot.
- Tough matte coating stops cross threading in rough work
- Handy thread alignment lets DIY mechanics swap worn units quickly
- Solid seals keep crankcase pressurized during aggressive launches
- Straight forward design works right out of the box for heavy duty haulers

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