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Product Information

Version: 2.0.0Built Date: 02/09/2026

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About this product

---tab Description--- Up-pipes and down-pipes – what do they do? Up-pipe is a piping that connects the exhaust manifold with the turbo. Exhaust gases enter the turbo from the l5p up-pipe. Down-pipe is a piping that connects the turbo with the rest of the exhaust pipe. Exhaust gases leave the turbo from the down-pipe. 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 ---tab FAQ--- Q1: What is the purpose of an L5P up pipe?A1: The L5P up pipe is a crucial component in the exhaust system that connects the exhaust manifolds to the turbocharger. It helps direct high-temperature exhaust gases efficiently, improving turbo spool and overall engine performance. Q2: How does this Duramax up pipe differ from the stock version?A2: This Duramax up pipe is made from high-quality stainless steel, offering better durability, improved exhaust flow, and reinforced flex sections to reduce the risk of cracking compared to OEM pipes. Q3: What options are available for this L5P up pipe?A3: SPELAB offers multiple configurations, including: Up pipe only Up pipe + downpipe Up pipe with EGR compatibility Up pipe + EGR + downpipe Q4: Does this Duramax up pipe affect emissions compliance?A4: This L5P up pipe is available in both EGR-compatible and EGR-modified versions. If emissions compliance is a concern, choose the EGR-compatible version that retains factory emissions controls. Q5: How difficult is the installation of this L5P up pipe?A5: The Duramax up pipe is designed for a bolt-on installation using factory-style mounting points. However, due to its location in the engine bay, installation may require specialized tools and mechanical experience. Q6: Can this up pipe withstand extreme temperatures?A6: Yes, the SPELAB L5P up pipe is built with heat-resistant stainless steel and reinforced flex joints, allowing it to handle extreme exhaust temperatures without failure. Q7: Will this Duramax up pipe increase horsepower?A7: While this L5P up pipe primarily enhances reliability and exhaust flow, it can contribute to better turbo efficiency and throttle response, which may support mild horsepower gains, especially when paired with other performance upgrades. Q8: Does this up pipe require additional modifications?A8: No, this Duramax up pipe is a direct-fit replacement for stock up pipes and does not require modifications. However, pairing it with an upgraded downpipe or performance exhaust can further improve efficiency. Q9: What maintenance is required after installing this L5P up pipe?A9: After installation, it’s recommended to: Check for leaks after the first few drives. Ensure all clamps and bolts remain tight over time. Monitor EGTs (Exhaust Gas Temperatures) if using this pipe with performance modifications. Q10: How does this up pipe benefit towing applications?A10: This Duramax up pipe helps maintain consistent power delivery and prevents heat-related performance loss, making it a...
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Exhaust Up-Pipe for 2017-2023 L5P Duramax

Upgrade your 2017-2023 L5P 6.6L Duramax Sierra or Silverado 2500/3500 with the SPELAB EGR + Up Pipe. This high-performance exhaust up-pipe is designed to enhance exhaust flow, improve turbo response, and reduce EGR-related issues. Crafted from durable materials, it ensures longevity and withstands extreme temperatures. The precision engineering guarantees a perfect fit, making installation a breeze. Experience increased power and efficiency while maintaining your vehicle's emissions compliance. Elevate your truck's performance with this essential upgrade!

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