1. Parts: A new radiator for a Mazda 323 can cost anywhere from $50 to $200, depending on the brand and quality.
2. Labor: The labor cost for radiator replacement can vary from $100 to $300, depending on the complexity of the job and the hourly rates of the mechanic.
3. Total cost: Adding the cost of parts and labor, the total cost to replace a radiator in a Mazda 323 can range from $150 to $500.
Note: These are just rough estimates, and the actual cost may vary. It's recommended to obtain quotes from multiple mechanics in your area to compare prices and services before making a decision. Additionally, some mechanics may offer discounts or charge different rates based on the age and condition of the vehicle, so it's always a good idea to inquire about potential discounts or additional costs before agreeing to the repair.