Motion Raceworks Freeze Plug Stoppers – Billet Brackets to Secure Frost Plugs LS Heads

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Freeze Plug Stoppers – Protect Your LS Heads from Dangerous Coolant Loss High pressure, back-fires, or over-boost situations can cause frost plugs on factory LS heads to pop out, s pilling coolant into hot environments—like onto tires or track surfaces. The Motion Raceworks Freeze Plug Stoppers are billet brackets designed to retain those plugs and dramatically reduce this risk. Key Features: Set includes 4 billet brackets (one for each corner) plus 4 bolts for secure installation. Designed specifically for factory LS heads to keep frost/freeze plugs from pushing out under pressure. Helps prevent coolant dumping, undesirable track incidents, or damage caused by sudden coolant loss. Fitment / Compatibility: Suited for all LS families (Gen III & IV) running factory LS heads and standard frost/freeze plugs. Ideal for boosted applications, high pressure cooling systems, or engines prone to pressure spikes (e.g. turbo / supercharged). Important Note:These brackets help retain plugs, but proper torque, clean surfaces, and cooling system design still matter. Make sure the frost plug’s boss is flat & properly sealed. Why Choose These Stoppers:If you want peace of mind in your high-output LS build, these stoppers add a safety margin. They protect against plug failure that can lead to overheating, engine damage, or sudden coolant loss in risky situations. Show more