I've torn apart more than a few LS engines in my garage, and nothing kills momentum like hunting for the right freeze plugs. Those little cups seal coolant passages, and if they're off-spec or missing, you're looking at leaks, overheating, or a full teardown redo. Enter Melling's complete freeze plug kit for GM LS-series engines – brass, steel, and plastic pieces that match OEM specs down to the millimeter.
Brass plugs handle expansion without cracking under heat cycles. Steel ones stand up to high-pressure spots, and plastic fillers plug non-pressurized voids without corroding. This kit covers the entire LS block and heads: 14mm, 24.5mm, 27mm, 32mm, 35mm, and 1.5-inch sizes – everything from the basics to the obscure ones behind the intake manifold. No guesswork, no substitutions.
Installing these is straightforward: clean the bores, lube the plugs, tap them in evenly with a driver tool. They seat flush, sealing tight against 15-20 psi coolant pressure. In my last 5.3L swap, this kit kept everything bone-dry after the first heat cycle – no drips under the truck. It cuts rebuild time by hours and boosts confidence when you fire it up.
Whether you're refreshing a Silverado's workhorse motor, hot-rodding a Camaro, or prepping an LS swap for your project car, these plugs deliver. They shrug off ethanol-blended fuels, antifreeze mixes, and Midwest winters. Mechanics swear by Melling for quality without the Fel-Pro markup. Pair it with new gaskets and you'll have an engine that runs cool and strong for years.
Don't let freeze plug hassles sideline your LS project. This kit's got your back – grab it and plug away.
