PDI Rifled Connecting Rod for CAT C15 & C16 | 3406E Compatible

All-New. Industry-Exclusive. Engineered Beyond Standard.

Industry-exclusive rifled connecting rod engineered to improve oil control and durability for CAT C15, C16, and 3406E engine builds. PDI’s new connecting rod represents a major advancement in design — and it’s exclusive to PDI. While traditional connecting rods have remained largely unchanged for decades, PDI engineered a solution that improves lubrication control where it matters most.

What Makes This Connecting Rod Different

Unlike traditional connecting rods that rely solely on splash or basic oil feed, PDI’s rifled connecting rod features a precision-machined internal oil rifling hole designed to improve oil distribution and better lubrication during engine operation.

This controlled oil movement helps maintain a more consistent lubrication film under load, especially in high-stress and high-mileage applications.

Key Benefits

• Industry-exclusive rifled connecting rod design
  No other aftermarket or OEM supplier offers this feature
• Improved oil control - More than a Splash!
  Rifling helps manage oil flow more effectively during operation
• Designed for durability under load
  Engineered for CAT C15, C16 and 3406E platforms where reliability matters
• Precision machined
  Manufactured to tight tolerances for proper balance and fitment
• Drop-in replacement
  Compatible with standard CAT C15, C16 and 3406E engines

Why PDI Built This

Connecting rods are one of the most heavily loaded components in a diesel engine. PDI identified an opportunity to improve how oil behaves inside the rod — not just how strong the rod is.

By introducing the oil passage design, PDI delivers a next-generation connecting rod that goes beyond traditional designs still used across the industry.

Built to PDI Standards

Every PDI connecting rod is engineered with performance, durability, and real-world engine demands in mind. This rifled design reflects PDI’s commitment to pushing beyond “standard replacement” parts and delivering meaningful engineering improvements.

If you’re rebuilding a CAT C15 or 3406E, this is the next step forward.