LowPricedAutoParts Brass Freeze Plug Kit (Expansion/Core Plugs) - Fits Chevrolet GMC Oldsmobile Pontiac 6.6L 400 OHV V8 Engines 1970-1980

Prevent coolant leaks and protect your classic GM 400 small-block V8 from freeze-related damage with this premium brass freeze plug kit from LowPricedAutoParts – a complete set tailored for the 6.6L/400 OHV V8 engines (naturally aspirated applications; GAS) from 1970–1980. This high-quality kit fits legendary models like Bel Air, Biscayne, Bonneville, C10/C20/C30 trucks, Caprice, Chevelle, Delta 88, El Camino, Grand Prix, Impala, Jimmy, Malibu, Monte Carlo, and more – essential for engine rebuilds, refreshes, or replacing worn/corroded plugs in these torque-heavy small-block V8s that delivered impressive low-end power in full-size cars, muscle machines, and work trucks during the '70s. 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 weather or harsh conditions. Matched to the 400's 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 strong performance, smooth operation, and classic drivability for years of enjoyable cruising or heavy-duty use. This is not a universal kit for mismatched engines or severely damaged blocks without inspection – professional measurement of plug holes, 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 Chevrolet, GMC, Oldsmobile, and Pontiac 6.6L/400 OHV V8 engines (naturally aspirated; GAS) from 1970–1980 – verify year and vehicle (e.g., Bel Air, Biscayne, Bonneville, C10/C20/C30 trucks, Caprice, Chevelle, Delta 88, El Camino, Grand Prix, Impala, Jimmy, Malibu, Monte Carlo) for exact match in classic cars and trucks
• 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 400 small-block 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 for vintage muscle cars and daily drivers – restores coolant system integrity, prevents overheating or block issues, and supports strong low-end torque and performance in classic applications
• Professional installation recommended – clean plug holes thoroughly, 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 reliability
• Contact LowPricedAutoParts for fitment questions, plug size confirmation, or compatibility with your 1970–1980 Chevrolet/GMC/Oldsmobile/Pontiac vehicle; we're here with fast, reliable support every step of the way