The Melling MDK300-HPT is the complete all-in-one AFM delete kit for 2007-2014 GM 5.3L LS engines (LC9, LH6, LMG, LY5). Unlike the standard MDK300, the MDK300-HPT includes an HP Tuners RTD flash tool pre-loaded with a Melling-specific AFM delete tune — no separate tuner required. The kit earned SEMA Emissions Certification for 2026 and won the 2025 SEMA Media's Choice Award.

Melling MDK300-HPT AFM Delete Kit Features:

• Fits 2007-2014 GM 5.3L LS engines — LC9, LH6, LMG, LY5
• Includes AFM delete camshaft (stock-replacement grind, computer compatible)
• Hydraulic roller lifters (0.842 in. O.D.) replace failure-prone AFM lifters
• High-impact plastic lifter guides (1.053 in. O.D., 0.500 in. I.D., 7.655 in. length)
• Cast iron thrust plate (4.980 in. O.D., 1.679 in. I.D., 0.178 in. thickness)
• Steel VVT oil control valve included where required
• HP Tuners RTD flash tool pre-loaded with Melling-specific AFM delete tune
• Smartphone-programmable via HP Tuners app — also functions as full scan tool
• SEMA Emissions Certified for 2026 — 2025 SEMA Media's Choice Award winner
• Eliminates cylinder deactivation — all 8 cylinders active at all times
• Sold as a Kit