2020-2024 L5P Catch Can Kit by VSE Engineering

2020-2024 L5P Integrated Catch Can / Kit

INSTALL VIDEO

What is this?

We have designed an integrated OEM appearing, universal fit catch can system to remove this oil and water vapor intrusion as well as provides the same exact crank case vacuum draw as the factory to protect the seals of the motor.

Why you need this:

The Gen 1 L5P Duramax Diesel from the factory directs crankcase oil vapor and condensation directly into the turbo inlet for reburning. This oil vapor once released from the crank case is drawn into the turbo inlet which coats the turbo blades, intercooler and then combines with EGR to form a sticky mixture that adheres to the cylinder heads, valves and then finds its way back into the crankcase via natural blow by.

The combined effects of this oil depositing itself on the charge air system

• Increases back pressure on the turbo (higher work load on the turbo to achieve the same psi)
• Decreases intercooler heat rejection capability due to oil coating the intercooler internals
• Combines with EGR form a mixture that sticks on the T-MAP sensor
• Decreases fuel economy from the lower cetane rating of the oil being consumed

Why not just route the CCV to the ground?

• The factory places a small vacuum draw on the crank case to keep the lowest possible differential pressure applied to the engine seals
• Routing to the ground increases the chance of oil coating the underside of the truck, and leaves spots nearly every where you park your truck
• Routing to the ground increases the chance of the hose freezing in cold climates due to the vapor build up in the hose which will teminate the CCV flow path
• Routing to the ground leaves an CCV smell inside the cab nearly all the time

What about freezing?

• We mounted the catch can inside the engine bay with an internal bypass to prevent any chance of catch can blockage or prevention of flow.
• This system was tested in a Nebraska winter of -20F on our 2025 G2 Duramax that is equipped with crank case pressure monitoring from the factory with OEM CCV pressure obtained.

Drain interval?

• We recommend emptying this can on every oil change or 5,000 miles - it will be full

Vehicle runaway protection?

• We have incorporated a internal 1 way check valved baffle that minimizes the amount of oil that could flow from the catch can in the event of vehicle rollover or overfilling.
• If the can becomes full, the internal check valve will fully open and pass CCV flow like normal

Features:

• Plug and play system
• Will not void any warranty
• Quick release for draining
• Maintains factory crank case pressure under all driving conditions

Fitment

• ALL 2020-2024 6.6L GM Duramax equipped pickup trucks
• ALL 2020-2024 6.6L GM Duramax equipped cab and chassis models.

Installation Time - 30 minutes

** Warranty Disclaimer  VIN Specific Enterprises LLC backs this product against manufacturer defects, defects in workmanship, and defects in quality. VIN Specific Enterprises LLC will not be held responsible for misuse of this product or damage that results from incorrect installation or service. If there are questions regarding installation, or warranty call 1-833-789-7700 !!