Ensure a perfect fit for your LS engine head bolts with this high-quality M11 x 2.00 Thread Cleaning Chaser. Designed as a direct replacement for OEM part numbers 9120011 & 912-0011, this thread chaser efficiently removes debris, rust, and minor thread damage, preventing cross-threading and ensuring smooth bolt installation. Crafted from hardened steel, this durable tool withstands repeated use, making it a reliable choice for professional mechanics and DIY builders alike. Whether you're performing an engine rebuild, cylinder head swap, or routine maintenance, this thread chaser helps save time and money by avoiding stripped threads and costly repairs. Ideal for: 🔧 LS Engine Head Bolt Thread Repair 🔧 GM 4.8L, 5.3L, 6.0L, 6.2L, and Other LS-Based Engines 🔧 Cleaning Aluminum Block Threads 🔧 Restoring Damaged or Dirty Fastener Holes