High-Flow Up-Pipes for L5P 6.6L Duramax Diesel

Fitment

• 2017-2023 L5P 6.6L Duramax Diesel GMC Sierra 2500 3500 HD
• 2017-2023 L5P 6.6L Duramax Diesel Chevrolet Silverado 2500 3500 HD

Feature

Upgrade the L5P to achieve higher-flow by bolting on PPE OEM-Length Replacement High-Flow Up-Pipes. These direct replacements have a 46% larger flow area over stock, resulting in a deeper-breathing power-plant, while maintaining Federal emissions standards. Manufactured from stainless steel, these Up-Pipes include superior internally-sleeved bellows, also made from stainless steel. Engineered to withstand high temperatures and pressures, they promote increased exhaust flow and lower EGTs.