LS Next Iron Block Parts Kit

The LS Next Iron Block Parts Kit by DART is purpose-built for LS engine builders and high-performance enthusiasts seeking reliable, OEM-quality replacement components for their iron block assemblies. Whether you're refreshing a tired engine, restoring a classic muscle car, or building a street rod platform, this kit provides the critical internal hardware needed to ensure proper fitment and longevity. DART's reputation for precision-engineered LS components makes this parts kit an essential choice for anyone committed to engine reliability over corner-cutting solutions.

This kit contains OEM-specification iron block fasteners and hardware engineered to exact tolerances, ensuring correct clamping loads, proper gasket sealing, and structural integrity under boost or high-rpm operation. DART manufactures these components from premium materials selected to withstand thermal cycling and mechanical stress inherent to modern LS platforms. The standardized hardware sizing and finish quality eliminate variables that can lead to head gasket failure, coolant leaks, or catastrophic internal damage—common consequences of using undersized or mismatched fasteners in high-output applications.

Engine builders, machine shops, and experienced DIY mechanics benefit most from this complete parts kit, which eliminates guesswork during block assembly and cylinder head installation. The LS Next Iron Block Parts Kit pairs seamlessly with both stock and aftermarket LS heads, making it indispensable for LS1, LS2, LS3, LS6, and other variants. Whether you're upgrading a carburetor-fed small-block or a modern fuel-injected platform, proper fastener specification ensures your build meets manufacturer standards and performs reliably for years of street or track use.