LowPricedAutoParts Brass Freeze Plug Kit (Expansion/Core Plugs) - Fits Jeep 4.0L 242 Power-Tech OHV Inline-6 Engines 1987-2006

Protect your Jeep 4.0L inline-6 from coolant leaks and freeze-related block damage with this premium brass freeze plug kit from LowPricedAutoParts – a complete set designed for the 4.0L/242 OHV L6 engines (naturally aspirated Power-Tech designation; GAS) from 1987–2006. This high-quality kit fits iconic Jeep models like Cherokee, Comanche, Grand Cherokee, Wagoneer, Wrangler, and more – a must-have for engine rebuilds, refreshes, or replacing worn/corroded plugs in these bulletproof, torque-rich inline-6s that powered generations of Jeeps with unmatched off-road capability, daily drivability, and legendary durability. The kit provides all necessary premium brass freeze plugs (also known as core plugs or expansion plugs) to seal the block's casting holes, offering superior corrosion resistance over steel for reliable coolant containment and protection against cracking in cold climates or rugged trail conditions. Matched to the 4.0L Power-Tech specs, these plugs provide a precise, OEM-style fit that minimizes leak risks, maintains cooling efficiency, and promotes long-term engine health. Ideal for tackling age-related deterioration during overhauls – this set helps revive your Jeep's low-end grunt, smooth operation, and trail-ready reliability for years of on- and off-road adventures. This is not a universal kit for non-4.0L engines or severely damaged blocks without inspection – professional measurement of plug holes, thorough cleaning, and correct installation techniques (with sealants as per Jeep guidelines) are essential for a tight, 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 Jeep 4.0L/242 OHV L6 12V engines (naturally aspirated; Power-Tech designation; GAS) from 1987–2006 – verify year and vehicle (e.g., Cherokee, Comanche, Grand Cherokee, Wagoneer, Wrangler) for exact match in trucks and SUVs
• Includes a full set of premium brass freeze plugs (core plugs) for engine block sealing – superior corrosion resistance compared to steel; critical for preventing coolant leaks, protecting against freeze damage, and sealing casting holes in these legendary, torque-rich Jeep inline-6s during rebuilds or repairs
• Precision-engineered to OEM specs for the 4.0L Power-Tech family (plug holes match factory block hole 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 off-road, trail, and daily applications – restores coolant system integrity, prevents block cracks or overheating, and supports dependable low-end torque for work, off-roading, or restoration
• Professional installation recommended – clean plug holes thoroughly (side row on block), apply appropriate sealant per Jeep specs if needed, and drive plugs in evenly/squarely to avoid distortion; pressure-test for leaks post-assembly to ensure maximum protection
• Contact LowPricedAutoParts for fitment questions, plug size confirmation, or compatibility with your 1987–2006 Jeep vehicle; we're here with fast, reliable support every step of the way