LowPricedAutoParts Brass Freeze Plug Kit (Expansion/Core Plugs) - Fits AMC Jeep 290 304 343 360 390 401 V8 Engines 1966-1991

Protect your classic AMC or Jeep V8 from coolant leaks and freeze-related block damage with this premium brass freeze plug kit from LowPricedAutoParts – a complete set designed for the 4.7L/290, 5.0L/304, 5.6L/343, 5.9L/360, 6.4L/390, and 6.6L/401 OHV V8 engines (naturally aspirated applications) from 1966–1991. This high-quality kit fits iconic models like AMX, CJ5/CJ6/CJ7, Cherokee, Gremlin, Hornet, Javelin, Matador, Wagoneer, Wrangler, and more – essential for engine rebuilds, refreshes, or replacing worn/corroded plugs in these robust, torque-heavy V8s that powered American classics and legendary off-roaders with proven reliability and low-end power. The kit supplies all necessary premium brass freeze plugs (also known as core plugs or expansion plugs) to seal block and head casting holes, offering superior corrosion resistance over steel for dependable coolant containment and protection against cracking in cold climates or rugged trail conditions. Matched to the AMC V8 specs, these plugs provide a precise, OEM-style fit that minimizes leak risks, maintains cooling efficiency, and promotes long-term engine health. Ideal for tackling age-related deterioration during overhauls – this set helps revive your vehicle's strong low-end torque, smooth operation, and trail-ready performance for years of on-road comfort or off-road adventure. This is not a universal kit for non-AMC/Jeep V8 engines or severely damaged blocks without inspection – professional measurement of plug holes, thorough cleaning, and correct installation techniques (with sealants as per AMC/Jeep guidelines) are essential for a tight, distortion-free seal. Always verify hole diameters and drive plugs squarely during assembly. Verify your exact year and application before ordering. LowPricedAutoParts is committed to providing the right parts with reliable customer support—message us your engine details or any fitment questions for fast, expert assistance. We're here to support your rebuild every step of the way. Shop with confidence knowing LowPricedAutoParts delivers quality automotive parts backed by outstanding service.

• Complete brass expansion plug kit for American Motors and Jeep 4.7L/290, 5.0L/304, 5.6L/343, 5.9L/360, 6.4L/390, and 6.6L/401 OHV V8 engines (naturally aspirated) from 1966–1991 – verify year and vehicle (e.g., AMX, CJ5/CJ6/CJ7, Cherokee, Gremlin, Hornet, Javelin, Matador, Wagoneer, Wrangler) for exact match in classic cars and Jeeps
• Includes a full set of premium brass freeze plugs (core plugs) for engine block and head sealing – superior corrosion resistance compared to steel; ideal for preventing coolant leaks, protecting against freeze damage, and sealing casting holes during rebuilds or repairs
• Precision-engineered to OEM specs for the AMC V8 family (plug holes match factory block/head sizes – confirm your specific plug hole diameters before ordering; no additional modifications needed if within spec)
• Premium brass construction delivers excellent long-term durability and secure sealing in vintage and off-road applications – restores coolant system integrity, prevents overheating or block issues, and supports strong low-end torque for classic driving or trail use
• Professional installation recommended – clean plug holes thoroughly, apply appropriate sealant per AMC/Jeep specs if needed, and drive plugs in evenly/squarely to avoid distortion; pressure-test for leaks post-assembly to ensure optimal protection and reliability
• Contact LowPricedAutoParts for fitment questions, plug size confirmation, or compatibility with your 1966–1991 AMC/Jeep vehicle; we're here with fast, reliable support every step of the way