LowPricedAutoParts Brass Freeze Plug Kit (Expansion/Core Plugs) - Fits GM Buick Cadillac Chevrolet GMC Oldsmobile Pontiac 3.0L 3.2L 3.8L 3800 & 4.1L V6 Engines 1977-1995 (1.507" Block Plugs)

Prevent coolant leaks and protect your GM 3.8L 3800 V6 from freeze-related damage with this premium brass freeze plug kit from LowPricedAutoParts – a complete set tailored for the 3.0L/181, 3.2L/196, 3.8L/231/3800 (including Turbo/Supercharged), and 4.1L/252 OHV V6 engines from 1977–1995 (block plugs 1.507" diameter). This high-quality kit fits popular models like Bonneville, Century, DeVille, Eldorado, Grand Prix, Impala, LeSabre, Park Avenue, Regal, Riviera, and more – essential for engine rebuilds, refreshes, or replacing worn/corroded plugs in these smooth, torque-rich V6s that powered family sedans, coupes, and luxury cars with refined performance and efficiency. The kit supplies all necessary premium brass freeze plugs (also known as core plugs or expansion plugs) to seal block and head casting holes, including the specified 1.507" block plugs, offering superior corrosion resistance over steel for dependable coolant containment and protection against cracking in cold weather or harsh conditions. Matched to the 231/3800 specs, these plugs deliver a precise, OEM-style fit that minimizes leak risks, maintains cooling system pressure, and promotes long-term engine health. Ideal for addressing age-related failures during overhauls – this set helps revive your vehicle's smooth torque, responsive power, and dependable reliability for years of comfortable commuting, highway cruising, or classic ownership. This is not a universal kit for mismatched engines or severely damaged blocks without inspection – professional measurement of plug holes (including 1.507" block plugs), thorough cleaning, and correct installation techniques (with sealants as per GM guidelines) are crucial for a leak-free, 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 GM Buick, Cadillac, Chevrolet, GMC, Oldsmobile, and Pontiac 3.0L/181, 3.2L/196, 3.8L/231/3800 (including Turbo/Supercharged), and 4.1L/252 OHV V6 engines from 1977–1995 – verify year and vehicle (e.g., Bonneville, Century, DeVille, Eldorado, Grand Prix, Impala, LeSabre, Park Avenue, Regal, Riviera) for exact match in cars (block plugs 1.507" diameter)
• 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 231/3800 V6 family (plug holes match factory block/head sizes including 1.507" block plugs – 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 for family sedans, coupes, and luxury cars – restores coolant system integrity, prevents overheating or block issues, and supports smooth torque and efficiency in daily driving or highway use
• Professional installation recommended – clean plug holes thoroughly (including 1.507" block plugs), apply appropriate sealant per GM specs if required, and drive plugs in evenly/squarely to avoid distortion; pressure-test for leaks post-assembly to ensure optimal protection and long-term reliability
• Contact LowPricedAutoParts for fitment questions, plug size confirmation (including 1.507" block plugs), or compatibility with your 1977–1995 GM/Buick/Cadillac/Chevrolet/GMC/Oldsmobile/Pontiac vehicle; we're here with fast, reliable support every step of the way