Pacific Performance Engineering

About Pacific Performance Engineering (PPE)

Pacific Performance Engineering, widely known as PPE, has been at the forefront of diesel performance since its founding in 1985. Built on a mission to push the limits of engineering innovation, PPE began by finding and resolving the weak links in factory diesel drivetrains — those components that simply were not built to survive the demands of elevated horsepower and torque. That relentless pursuit of improvement earned PPE a reputation as one of the most trusted names among diesel truck enthusiasts across the country.

PPE's story began with the Duramaximizer, a breakthrough performance solution developed for the early Duramax diesel platform at a time when virtually no consumer-grade performance upgrades existed for these trucks. That pioneering spirit carried forward as PPE expanded its engineering efforts to cover Ford Powerstroke and Dodge Ram Cummins applications alongside GM Duramax platforms. Today, PPE manufactures an extensive catalog of over 400 products spanning transmission upgrades, oil systems, differential covers, tuning solutions, exhaust components, cylinder heads, fuel systems, and much more.

Engineering Philosophy: Solving Real Problems

What sets PPE apart is its engineering-first approach. Rather than simply repackaging existing solutions, PPE engineers identify specific failure points and design purpose-built fixes. A prime example is their approach to thermal management — factory transmission pans and differential covers are typically stamped steel, which dissipates heat poorly under heavy towing or performance use. PPE addresses this by manufacturing components from premium A356.0-T6 heat-treated cast aluminum alloy, a material that combines high strength with excellent thermal conductivity, and adding external cooling fins that actively shed heat into the ambient air.

This same philosophy applies across PPE's product lineup. Their automatic transmission oil pans are precision-cast using permanent steel molds for dimensional accuracy and increased fluid capacity, directly lowering transmission fluid temperatures and extending service life. For trucks that work hard on the highway or tow heavy loads, PPE's automatic transmission oil coolers provide an additional layer of thermal protection, helping maintain safe operating temperatures even under sustained stress.

PPE also addresses the electronic side of diesel performance with their automatic transmission control modules and Xcelerator tuning solutions, allowing owners to optimize shift points, fueling, and overall powertrain behavior to match their specific use case — whether that's daily driving, towing, or competition. On the engine side, their engine oil pans mirror the design principles of their transmission pans, using cast aluminum construction with integrated fins to keep engine oil cooler and cleaner under high-demand conditions.

Rounding out the drivetrain, PPE's differential covers are available in both cast aluminum and cast nodular iron, providing improved gear lubrication, increased heat dissipation, and greater impact resistance compared to factory stamped-steel units. These covers are engineered with drain and fill ports for easier maintenance — a practical detail that diesel owners genuinely appreciate.

Who Builds with PPE?

PPE products are popular with a wide range of diesel truck owners: daily drivers looking to protect their investment, weekend towers who push their trucks hard, and competitive diesel racers chasing maximum performance. The brand's reputation for fit, finish, and real-world durability has made it a staple recommendation among diesel mechanics and enthusiasts alike. Whether you drive a GM Silverado or Sierra, a Ford Super Duty, a Ram with a Cummins, or even a Jeep, PPE likely has an engineered solution designed specifically for your application.