PPE (Pacific Performance Engineering) offers hundreds of products engineered to improve your diesel's performance. From their heavy-duty cast aluminum pans and covers to the Dual Fueler. All PPE products are thoroughly engineered and tested to high standards, making sure you make all the power you deserve. Founded in 1985, PPE made engineering innovations the prime directive in pursuit of diesel performance. They always have an eye on performance, but always mindful of Federal regulations for air quality.