LowPricedAutoParts Brass Freeze Plug Kit (Expansion/Core Plugs) - Fits GM Oldsmobile 260 307 330 350 403 425 455 V8 Engines 1964-1990

Safeguard your classic Oldsmobile V8 from coolant leaks and freeze-related damage with this premium brass freeze plug kit from LowPricedAutoParts – a complete set tailored for Oldsmobile engines including 4.3L/260 (1975-1982), 5.0L/307 (1980-1990), 5.4L/330 (1964-1967), 5.7L/350 gas (1968-1980), 5.7L/350 diesel (1978-1985), 6.6L/403 (1977-1979), 7.0L/425 (1965-1967), and 7.5L/455 (1970-1976) OHV V8 (naturally aspirated or diesel applications) from 1964–1990. This high-quality kit fits legendary models like Cutlass, 442, Delta 88, 98, Toronado, Custom Cruiser, Vista Cruiser, and more – essential for engine rebuilds, refreshes, or replacing worn/corroded plugs in these refined, torque-rich V8s that powered muscle cars, luxury sedans, and reliable daily drivers through the '60s to '90s. 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 Oldsmobile V8 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 effortless power, smooth operation, and classic drivability for years of enjoyable cruising or restoration projects. 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/Oldsmobile guidelines, particularly for diesel variants) 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 Oldsmobile 4.3L/260 (1975-1982), 5.0L/307 (1980-1990), 5.4L/330 (1964-1967), 5.7L/350 gas (1968-1980), 5.7L/350 diesel (1978-1985), 6.6L/403 (1977-1979), 7.0L/425 (1965-1967), and 7.5L/455 (1968-1976) OHV V8 engines (naturally aspirated or diesel) from 1964–1990 – verify year and vehicle (e.g., Cutlass, 442, Delta 88, 98, Toronado, Custom Cruiser) for exact match in classic cars
• 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 Oldsmobile 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 muscle cars and cruisers – restores coolant system integrity, prevents overheating or block issues, and supports smooth, powerful performance in classic applications
• Professional installation recommended – clean plug holes thoroughly, apply appropriate sealant per GM/Oldsmobile specs if required (especially important for diesel variants), 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 1964–1990 Oldsmobile/GM vehicle; we're here with fast, reliable support every step of the way