GMC Yukon XL Performance Exhaust - Stainless Works - Long Tube Headers with Y-Pipe - Mill Finish - 15-20. High-quality long-tube headers engineered to improve exhaust flow and give your 5.3L Yukon XL a fuller exhaust character.

These Stainless Works long-tube headers are built from 304 stainless steel with a mill finish and TIG welds for strength and corrosion resistance. Designed for 2015–2020 5.3L GMC Yukon and Yukon XL applications, the kit features CNC mandrel-bent 1-7/8" primaries that feed into 3" slip-fit collectors. High-flow catalytic converters and 3" lead pipes merge into a Y-pipe for a factory-friendly connection; O2 bungs and a thick flange provide reliable factory integration. This assembly is American-made and intended to increase airflow and refine exhaust tone while retaining compatibility with the factory exhaust routing.

Features

• 304 stainless steel construction with mill finish
• CNC mandrel-bent 1-7/8" primary tubes
• 3" slip-fit collectors and 3" lead pipes
• High-flow catalytic converters (catted leads) and Y-pipe for factory connection
• TIG welded construction, 3/8" thick flange, O2 bung provision
• Fits 2015–2020 GMC Yukon & Yukon XL 5.3L (also fits compatible Chevy Tahoe/Suburban 5.3L applications)

If you have questions or want help confirming fitment, call us directly — we’re happy to assist. We offer installation and customization services at our two locations in Austin, Texas and the Los Angeles, California area. Call: 512-982-9393 (TX) or 562-981-6800 (CA). If you’re considering purchasing multiple items, contact us for shipping discounts. We install on premises at both locations.

CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov