KPower K24Z3 Ultimate Swap Package for 1990-2005 Mazda Miata (NA NB) Select engine mount material::Polyurethane (race) our upper coolant neck is

our upper coolant neck is needed to route the upper radiator hose inlet away from the firewall and towards the radiator

5" Pre-Cut Silicone High Temp Brake Hose (2)

our modified valve cover is essential

3” stainless downpipe with flex section

KPower K24Z3 Ultimate Swap Package for 1990-2005 Mazda Miata (NA NB) Select engine mount material::Polyurethane (race) our upper coolant neck isLead times for shipment vary. Please reference our Current Lead Times page for the most up to date fulfillment estimates. The K24Z3 swap is a strong choice for NA and NB Miatas that must retain the OEM subframe for class legal racing. While the K24A2 remains our most popular and versatile platform, the K24Z3 fills an important niche. Want a deeper dive into the differences? Check out our K24A2 vs. K24Z3 blog post. Version 3 of our Ultimate K24Z3 Swap