Collection: 2017-2019 Duramax L5P

2017–2019 Duramax L5P parts and systems are built around GM’s first generation of the L5P platform.
These model years introduced a new high-pressure fuel system, revised turbocharger control, and updated transmission integration compared to earlier Duramax engines.

This collection groups products intended to align with the factory architecture of early L5P trucks, helping users source compatible components for service, maintenance, or modification.

Platform Overview

The 2017–2019 L5P represents the initial rollout of GM’s 6.6L L5P diesel engine. This platform differs from both earlier Duramax generations and later Global B trucks in several areas.

Key platform considerations include:

• ECM and TCM communication specific to pre-Global B systems
• High-pressure fuel system design
• Turbocharger and exhaust control behavior
• Transmission shift logic and torque management

Components designed for other Duramax generations may not function correctly on this platform.

Product Categories in This Collection

This collection includes components commonly required for the 2017–2019 L5P platform, including:

• Tuning devices and calibration-related hardware
• Exhaust systems and exhaust components
• EGR-related service and upgrade components
• Supporting electrical, sensor, and control hardware

Products are organized based on vehicle compatibility and application rather than performance claims.

System Compatibility Considerations

Early L5P trucks rely on coordinated operation between engine control, transmission logic, and emissions systems. Component selection should account for electrical interfaces, factory mounting locations, and software interaction between modules.

This collection is structured to assist users in identifying components that align with:

• OEM-style connectors and harness layouts
• Platform-specific control strategies
• Factory driveline and exhaust configurations

Intended Use

This collection is intended for owners, technicians, and shops working with 2017–2019 Duramax L5P trucks who require accurate fitment and platform-aligned components.

Products listed here are grouped by compatibility and system application.

Summary

The 2017–2019 Duramax L5P platform introduced significant changes compared to previous Duramax engines. Proper component selection is necessary to maintain correct operation.

This collection provides access to parts and systems intended to align with those requirements.

Explore the collection below.