LowPricedAutoParts Brass Freeze Plug Kit (Expansion/Core Plugs) - Fits GM Buick Chevrolet GMC Jeep Pontiac 2.5L 151 Iron Duke OHV L4 Engines 1977-1993

Prevent coolant leaks and protect your GM 2.5L Iron Duke engine from freeze-related damage with this premium brass freeze plug kit from LowPricedAutoParts – a complete set tailored for the 2.5L/151 OHV L4 engines (naturally aspirated Pontiac Iron Duke designation; GAS) from 1977–1993. This high-quality kit fits popular models like Astro, CJ5/CJ7, S10/S10 Blazer, S15/S15 Jimmy, Camaro, Firebird, Grand Am, Skylark, and more – essential for engine rebuilds, refreshes, or replacing worn/corroded plugs in these durable, economical inline-4s that powered compact cars, trucks, vans, and SUVs with reliable performance and good fuel economy. 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 2.5L/151 OHV 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 keep your vehicle running smoothly with restored efficiency, responsive power, and everyday dependability for commuting, light hauling, or classic ownership. 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 Buick, Chevrolet, GMC, Jeep, and Pontiac 2.5L/151 OHV L4 8V engines (naturally aspirated; Pontiac Iron Duke designation; GAS) from 1977–1993 – verify year and vehicle (e.g., Astro, CJ5/CJ7, S10/S10 Blazer, S15/S15 Jimmy, Camaro, Firebird, Grand Am, Skylark) for exact match in cars, trucks, and vans
• 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 2.5L/151 Iron Duke 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 daily drivers, work trucks, and utility vehicles – restores coolant system integrity, prevents overheating or block issues, and supports smooth, fuel-efficient performance in compact 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 long-term reliability
• Contact LowPricedAutoParts for fitment questions, plug size confirmation, or compatibility with your 1977–1993 GM/Jeep/Pontiac vehicle; we're here with fast, reliable support every step of the way