Prevent coolant leaks and protect your classic Ford inline-6 engine from freeze-related damage with this premium steel freeze plug kit from LowPricedAutoParts – a complete set tailored for the 3.9L/240 and 4.9L/300 OHV Inline-6 engines (naturally aspirated applications; GAS, BI-FUEL, or LPG) from 1965–1996. This high-quality kit fits popular models like Bronco, Country Sedan, Country Squire, Custom, Custom 500, E-Series Econoline vans, F-Series trucks, Galaxie, LTD, Ranch Wagon, and more – essential for engine rebuilds, refreshes, or replacing worn/corroded plugs in these durable, torque-rich inline-6s that powered classic cars, trucks, and vans with legendary reliability, low-end grunt, and smooth operation through decades of service. The kit supplies all necessary high-strength steel freeze plugs (also known as core plugs or expansion plugs) to seal block and head casting holes, ensuring dependable coolant containment and protection against cracking in cold weather or harsh conditions. Matched to the 240/300 inline-6 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 torque, reliable drivability, and classic performance for years of cruising, work duty, or restoration enjoyment. 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 Ford 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.