PPE MAP Sensor Relocation Block – Lower | GM 6.6L Duramax L5P (2023.5–2026)

Protect your lower MAP pressure sensor from soot and oil contamination with the PPE Lower MAP Sensor Relocation Block. Designed specifically for 2023.5 - 2026 GM 6.6L Duramax L5P engines equipped with the updated dual-sensor intake manifold, this CNC-machined billet aluminium upgrade helps maintain accurate sensor readings, improve long-term reliability and simplify maintenance.

Beginning in mid-2023, GM introduced a revised intake manifold on the 6.6L Duramax L5P, separating the original MAP sensor into two individual sensors—a manifold temperature sensor and a lower manifold pressure sensor.

The PPE Lower MAP Sensor Relocation Block has been engineered specifically for this updated design, relocating the lower MAP pressure sensor away from the direct airflow path where soot, carbon and oil vapour accumulate. By reducing contamination, the sensor can continue to provide accurate readings, helping maintain engine performance, fuel economy and drivability.

Manufactured from precision 6061-T6 CNC-machined billet aluminium with a corrosion-resistant black anodised finish, the relocation block is supplied complete with mounting hardware and O-ring seal for a straightforward bolt-on installation.

Whether your L5P is used for towing, touring or performance applications, the PPE relocation block provides a simple preventative upgrade that helps reduce future sensor cleaning and maintenance.

Key Features:

• CNC-machined 6061-T6 billet aluminium construction.
• Corrosion-resistant black anodised finish.
• Relocates the lower MAP pressure sensor away from soot and oil contamination.
• Helps maintain accurate sensor readings.
• Supports consistent engine performance and fuel economy.
• Reduces future sensor cleaning requirements.
• Direct bolt-on installation.
• Includes mounting hardware and O-ring seal.
• Designed specifically for 2023.5–2026 dual MAP sensor L5P engines.

Why Upgrade?

Modern common-rail diesel engines rely on accurate manifold pressure readings to calculate fuelling, boost pressure and engine performance.

The PPE relocation block helps:

• Reduce soot and oil contamination.
• Maintain accurate MAP sensor readings.
• Improve long-term reliability.
• Reduce maintenance and cleaning intervals.
• Support tuned and towing applications.
• Improve engine bay serviceability.

Ideal for:

• Towing.
• Touring.
• Performance builds.
• High-kilometre vehicles.
• Modified L5P engines.

Vehicle Fitment:

Chevrolet Silverado 2500HD:

• 6.6L Duramax L5P.
• 2023.5 - 2026.

Chevrolet Silverado 3500HD:

• 6.6L Duramax L5P.
• 2023.5 - 2026.

GMC Sierra 2500HD:

• 6.6L Duramax L5P.
• 2023.5 - 2026.

GMC Sierra 3500HD:

• 6.6L Duramax L5P.
• 2023.5 - 2026.

Important: This kit suits 2023.5+ engines with the revised dual MAP sensor intake manifold. It is not suitable for earlier single MAP sensor L5P engines.

What's Included:

• PPE Lower MAP Sensor Relocation Block.
• O-ring seal.
• Mounting hardware.
• Installation instructions.

Why We Recommend It:

At Garage76, we regularly see MAP sensors affected by soot and oil contamination on modern diesel engines. The PPE Lower MAP Sensor Relocation Block is a simple reliability upgrade that helps protect the sensor, maintain accurate engine data and reduce ongoing maintenance.

For customers with 2023.5+ L5P Duramax vehicles, it's a worthwhile preventative modification—particularly for those towing, touring or running performance upgrades.