6.6L Duramax DPF and CAT Delete Pipe 2015.5-2022

Selection Points For 6.6L Duramax Delete Pipes

Check The L5P Product Wording

The L5P option is listed as a 4" DPF & CAT Delete Race Pipe for 2017-2022 6.6L Duramax L5P Chevy GMC 2500 3500. Use that wording to compare against your truck before ordering.

Check The LML Product Wording

The LML option is listed for 2015.5-2016 6.6 Duramax LML and fits Chevy Silverado 2500 3500 according to the title. If your truck is outside that wording, check the product page rather than assuming fitment.

Compare Only The Stated Pipe Details

Both titles identify DPF and CAT delete pipe parts. The sampled titles do not state material, included hardware, tuning requirements, installation steps, or warranty terms, so verify those points on the individual listing.

Fitment And Product Details To Verify

Year, Model, And Engine Matching

Use the collection as a starting point, then match the product page to your exact engine code, vehicle model, and year. Do not treat Chevy, GMC, Silverado, 2500, and 3500 wording as interchangeable unless the specific product page supports it.

Missing Specification Checks

Before purchase, verify any engine, vehicle, year, included component, material, installation, tuning, or warranty detail that is not shown in the product title. Product titles confirm the listed application only; they do not prove extra parts or service steps.

Off-Road Use And Regulations

DPF and CAT delete products are intended only for off-road use. Check applicable local regulations before purchasing, and do not order if the product page does not support your intended application.

Products In This Collection

• 4" DPF & CAT Delete Race Pipe For 2017-2022 6.6L Duramax L5P Chevy GMC 2500 3500, use this listing to review the stated L5P year range and Chevy GMC 2500 3500 application.
• For 2015.5-2016 6.6 Duramax LML DPF & CAT Delete Pipe Fits Chevy Silverado 2500 3500, use this listing to review the stated LML and Chevy Silverado 2500 3500 application.

Frequently Asked Questions About 6.6L Duramax DPF and CAT Delete Pipes

How do I choose the right cat delete Duramax pipe?

Start with the product title, then match your truck by year range, engine code, and model wording. This collection includes separate listings for 2015.5-2016 6.6 Duramax LML and 2017-2022 6.6L Duramax L5P applications, so do not treat the pipes as interchangeable without checking the individual product page.

What product types are listed in this collection?

The sampled titles identify DPF and CAT delete pipe parts, including one 4" race pipe listing for the 2017-2022 L5P application and one DPF and CAT delete pipe listing for the 2015.5-2016 LML application. Check each product page for any details not shown in the collection title.

Which trucks are supported by the listed fitment?

The listed L5P product title states 2017-2022 6.6L Duramax L5P Chevy GMC 2500 3500. The listed LML product title states 2015.5-2016 6.6 Duramax LML and Chevy Silverado 2500 3500. If your truck wording is different, verify fitment before ordering.

Are these DPF and CAT delete pipes legal for street use?

These DPF and CAT delete products are intended only for off-road use. Buyers should check applicable local regulations before purchasing, and should not assume a listed pipe is suitable for any regulated on-road application.

Do the product titles confirm material or included hardware?

The supplied product titles do not state material, clamps, gaskets, sensors, or other included hardware. Review the individual product page before purchase, especially if you need a specific material, accessory, or installation component.

What should I check before installation?

Confirm the year range, engine code, model wording, and any product-page notes before starting work. The sampled titles do not provide installation steps, required tools, or setup instructions, so use the individual listing or the Contact Us page for product-specific questions.

Does the 2017-2022 listing fit the same trucks as the 2015.5-2016 listing?

No. The collection separates the 2017-2022 6.6L Duramax L5P Chevy GMC 2500 3500 listing from the 2015.5-2016 6.6 Duramax LML Chevy Silverado 2500 3500 listing. Match the exact product wording to your truck instead of ordering by engine size alone.

Can I use this collection if I am not sure whether my truck is LML or L5P?

Use the collection as a starting point, but verify your engine code before selecting a pipe. The listed applications are divided by LML and L5P, and the product title is the first fitment check. If you are unsure, review your truck information and use the Contact Us page during published Monday-Friday business hours.

What is the return, warranty, and contact policy for these parts?

Unused products may be returned within 45 days of delivery when the Return & Exchange Policy conditions are met. Return shipping responsibility depends on the reason for the return. Review the current policy and use the Contact Us page for assistance. Check the individual product page for any applicable warranty terms.