We'll refund the difference.
One of the common issues with the MZR motor is the weak OEM VVT Actuator. These are known for going out and Mazda has revised the OEM VVT actuator to make it stronger and keep it from failing.
How can you tell if your VVT Actuator is failing?
You will hear a rattle on start up coming from the passenger side of the motor.
What's happening is the actuator can't hold oil pressure and therefore it can't take up the slack in the chain and allows it to hit the timing cover. This is the first sign that your VVT Actuator is going out and you will need to replace it quickly. If the car slips timing, pistons will meet valves and you will be left looking for a new motor.
If you are only looking for certain components in the kit, use the list below with links to each individual part.
Items Included in the Kit:
Mazda OEM VVT Actuator
Mazda OEM Timing Chain
Mazda OEM Timing Chain Tensioner
Mazda OEM Camshaft Bolt
Mazda OEM Camshaft Friction Washer
Mazda OEM Crankshaft Friction Washers
Mazda OEM Crank Pulley Bolt
Mazda OEM Front Oil Seal
Mazda OEM Chain Guide
Mazda OEM Chain Tensioner Guide
Mazda OEM Valve Cover Gasket
Mazda OEM HPFP Cam Housing Gasket