Smeding Diesel 20-24 Duramax L5P Max Flow Kit

Smeding Diesel 20-24 Duramax L5P Max Flow Kit

Designed for the 2020–2025 L5P Duramax, this performance package improves both intake and exhaust flow by combining a high-efficiency airflow system with a 3.5-inch downpipe upgrade. It helps your turbo and engine breathe better, delivering sharper throttle response, quicker turbo spool, and overall better performance. This setup also replaces factory components known to restrict flow or fail under pressure, reducing the risk of boost leaks, power loss, and reliability issues in heavy-duty or high-performance use.

• 4" Aluminum intake

• 4" Intake horn a PCV port & surge ring

• Air box with dry filter

• Complete installation kit: includes 4" silicone hump boot and stainless steel T-bolt clamps

• 3" Hot side intercooler piping

• 3.5" Cold side intercooler piping

• CNC machined flange and billet aluminum adapter with dual o-rings

• OEM clip at Y-bridge connection replaced by silicone boot and t-bolt clamps for superior sealing

• Intercooler outlet clip
  

• 100% Bolt-On – no tuning required

• Compatible with stock trucks
  

• 3.5" DOC-back downpipe
  

• Pre-installed heat wrap for added thermal protection

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Order Processing Time:

Orders are usually processed within 24-48 hours after the order has been placed.
Custom or special order items may take longer to process, typically 3-5 business days.

Shipping Methods:

Standard Shipping (3-7 business days)
Expedited Shipping (2-3 business days)
Express Shipping (1-2 business days)

Packaging:

Rest assured that all items will be securely and safely packaged to prevent any damage during transit. Fragile or high-value parts will be packaged with additional protective materials, such as bubble wrap or foam padding.

Shipping Rates:

Shipping rates vary based on the size, weight, and destination of the package. You can view the estimated shipping costs for your order during the checkout process before placing your order.

Order Tracking:

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International Shipping:

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