If you’re looking for the best parts in the business for your diesel, you’ve come to the right place. At D&J Precision Machine, we take pride in our quality parts that will make your engine run how you want. Maybe you’re looking in the market for some more power? If so, consider upgrading to one of our higher stage cylinder heads! Whether you’re looking for timing or valve covers, a new set of pistons or even just a comfortable D&J Precision Machine shirt, we have all the products that you desire. Look in our shop and find the perfect part for you!