Northern Radiators now in stock at Performance Improvements. Northern Radiator has been providing high quality heating and cooling products for over 40 years. Whether your needs require Automotive, Truck, or Racing products, your best source is Northern Radiator. Canadian pricing, no customs, duties, or border fees, 365 day return. Don't see what you're looking for? Visit one of our locations or give us a call toll free 1-877-471-6700. Proudly Canadian since 1964!