LowPricedAutoParts Brass Freeze Plug Kit (Expansion/Core Plugs) - Fits Chrysler Dodge Plymouth Big Block 383 400 413 426 440 Engines 1959-1978

Safeguard your classic Mopar big block from coolant leaks and freeze-induced cracks with this premium brass freeze plug kit from LowPricedAutoParts – a complete set designed for Chrysler, Dodge, and Plymouth 6.3L/383 (1959-1971), 6.6L/400 (1971-1978), 6.7L/413 (1959-1965), 7.0L/426 (1963-1971), and 7.2L/440 (1966-1978) OHV V8 engines (naturally aspirated applications, including Wedge and Hemi where noted). This high-quality kit fits legendary models like Charger, Coronet, Road Runner, GTX, Super Bee, Belvedere, Fury, Imperial, Monaco, New Yorker, and various Dodge/Plymouth trucks/vans – a must-have for engine rebuilds, refreshes, or replacing corroded/worn plugs in these torque-monster big blocks that defined Mopar muscle and performance. The kit provides all required premium brass freeze plugs (also known as core plugs or expansion plugs) to seal block casting holes (typically ~1-5/8" diameter), offering superior corrosion resistance over steel for dependable coolant containment and protection against environmental damage or cold-weather issues. Matched to the B/RB big block specs, these plugs provide a precise, factory-style fit that reduces leak risks, maintains cooling pressure, and promotes long-term engine reliability. Perfect for tackling age-related deterioration during overhauls – this set helps unleash (or preserve) your Mopar's iconic power and keeps it running strong with efficient cooling for years of thrilling drives or heavy-duty reliability. This is not a universal kit for non-big block engines or severely damaged blocks without inspection – professional measurement of plug holes (~1-5/8" standard), thorough cleaning, and correct installation (with sealants as per Chrysler guidelines) are essential for a tight, distortion-free seal. Always verify hole diameters and drive plugs squarely during assembly. Verify your exact year, engine code, 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 Chrysler, Dodge, and Plymouth big block engines: 6.3L/383 (1959-1971), 6.6L/400 (1971-1978), 6.7L/413 (1959-1965), 7.0L/426 (1963-1971), and 7.2L/440 (1966-1978) OHV V8 – naturally aspirated (includes Wedge and Hemi variants where applicable); verify year and vehicle (e.g., Charger, Coronet, Road Runner, GTX, Fury, Imperial, Monaco, New Yorker, Ramcharger, trucks/vans) for exact match
• Includes a full set of premium brass freeze plugs (core plugs) for engine block sealing – superior corrosion resistance compared to steel; essential for preventing coolant leaks, protecting against freeze damage, and sealing casting holes in these powerful Mopar big blocks during rebuilds or repairs
• Precision-engineered to OEM specs for Mopar big block B/RB series (common plug diameter ~1-5/8" for block plugs; matches factory tolerances – confirm your block's plug hole measurements before ordering; no additional modifications needed if within spec)
• Premium brass construction delivers excellent long-term durability and secure sealing in vintage applications – restores coolant system integrity, prevents block cracks or overheating, and supports legendary performance in muscle cars, luxury models, and trucks
• Professional installation recommended – clean plug holes thoroughly (side rows on block), apply appropriate sealant per Chrysler specs if needed, and drive plugs in evenly/squarely to avoid distortion; pressure-test for leaks post-assembly to ensure optimal protection
• Contact LowPricedAutoParts for fitment questions, engine code verification, plug size confirmation (e.g., standard 1-5/8" block plugs common on these big blocks), or compatibility with your 1959–1978 Mopar vehicle; we're here with fast, reliable support every step of the way