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Hot Selling Luxurious Thread Insert Single Kits Spark Plug Repair Kits Auto Repair Tool M4-M14 1/4-1/2 (UNG/UNF)
$9$16.57-45.68%
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Premium Thread Insert Single Kits for Spark Plug Repair
High-quality stainless steel inserts ensure durability and corrosion resistance for long-lasting repairs. Precision CNC machining guarantees perfect thread alignment and secure fit for M4-M14 (1/4"-1/2" UNG/UNF) applications. Ideal for automotive professionals and DIY enthusiasts repairing stripped or damaged spark plug threads in engines. Compatible with aluminum and cast iron heads, restoring factory-grade strength. Heat-treated alloy construction prevents thread deformation under extreme temperatures. Includes easy-to-use installation tool for quick, mess-free repairs. Bulk pricing available—stock up on essential repair kits at unbeatable wholesale rates. Trusted by mechanics worldwide for reliable, high-performance solutions.
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