Any non-performance engine and/or transmission purchased, carries a 90-day warranty on defective internal moving components only starting from delivery date. Any performance engine and/or transmission purchased (I.E. turbocharged, supercharged, KL31, VTEC, i-VTEC, VVTI, VVL, VVTL-I, VVT, MIVEC, ETC) carries a 30-day start up warranty on defective internal moving components only starting from delivery date. ANY and ALL Rotary or Diesel engines are not covered under warranty and are sold as is. Engine and/or transmission MUST be installed within the warranty period. Warranty covers internal moving components of the head(s) and block as well as internals of the transmission ONLY. Warranty does NOT cover manifold, fuel rail(s), injectors, valve cover(s), coils/distributor, turbo/supercharger(s), ignitors, alternators, A/C compressors, power steering pump, oil/water pump, oil pan, seals, clutch, torque converter, flywheel, flex plate, solenoids, and external sensors. Warranty also does not cover costs for shipping or labor for the installation and removal. Engine and/or transmission must be installed by a certified mechanic only. Please conduct your own research or consult with your mechanic for fitment and installation procedure prior to purchasing. In the unlikely event of a defective engine head(s), block, or transmission, we will be responsible to either replace or fix the defective part only, at our discretion. Your mechanic is at no point authorized to disassemble our engine and/or transmission, unless otherwise noted.