For LB7 LLY LBZ LMM LML 6.6L Duramax Passenger Side Up-pipe + 3 Turbo Down Pipe
For LB7 LLY LBZ LMM LML 6.6L Duramax Passenger Side Up-pipe + 3 Turbo Down Pipe is a performance exhaust upgrade made from durable steel, priced at $139.04. It boosts horsepower, improves turbo response, and enhances exhaust flow—ideal for Duramax diesel owners seeking better engine efficiency and a deeper diesel sound for off-road or high-performance use.
● In stock
Buy at Lab Work Auto →Price and availability may change. Click to see current details on Lab Work Auto.
Key features
- 3-inch mandrel-bent down pipe
- LB7-style up-pipe for faster spool
- Heat-wrapped for thermal efficiency
- 20% improved exhaust flow vs stock
- Supports +21HP and +24 ft-lbs
- Smooth bends reduce backpressure
- No EGR riser; off-road use only
Pros
- +Boosts horsepower and torque
- +Improves turbo response
- +Durable heat-resistant construction
Cons
- −No EGR riser for 2004.5+ models
- −Professional install required
- −No instructions included
About For LB7 LLY LBZ LMM LML 6.6L Duramax Passenger Side Up-pipe + 3 Turbo Down Pipe
What is For LB7 LLY LBZ LMM LML 6.6L Duramax Passenger Side Up-pipe + 3 Turbo Down Pipe?
This performance exhaust system upgrade is designed for 6.6L Duramax diesel engines (LB7, LLY, LBZ, LMM, LML). It includes a passenger side up-pipe and a 3-inch turbo down pipe, both engineered to replace stock components with improved flow and heat retention. Built for durability and performance, this kit enhances exhaust gas velocity, supports increased power output, and delivers a richer diesel exhaust note. It's a direct fit for 2001–2004 LB7 engines without EGR and suitable for off-road use on later models with EGR delete setups.
Key features
- 3-Inch Down Pipe — Mandrel-bent for maximum exhaust flow and reduced backpressure.
- LB7-Style Up-pipe — Improves turbo spool and lowers exhaust gas temperatures (EGTs).
- Heat-Wrapped Design — Retains heat for improved turbo efficiency and performance.
- 20% Greater Flow — Over stock components, enhancing engine breathing.
- Power Gains — Supports up to +21HP and +24 ft-lbs of torque.
- Smooth Mandrel Bends — Prevent flow restrictions and turbulence in the exhaust stream.
- Off-Road Ready — No EGR riser; ideal for deleted or race-only Duramax builds.
Who is For LB7 LLY LBZ LMM LML 6.6L Duramax Passenger Side Up-pipe + 3 Turbo Down Pipe for?
This kit suits Duramax diesel truck owners upgrading their exhaust for better performance, especially those with modified or EGR-deleted engines. It’s ideal for enthusiasts focused on towing, off-road use, or maximizing turbo efficiency. Professional installation is recommended due to exhaust system complexity.
How does For LB7 LLY LBZ LMM LML 6.6L Duramax Passenger Side Up-pipe + 3 Turbo Down Pipe compare?
Compared to stock up-pipes and down pipes, this kit offers superior flow, heat management, and performance gains. Unlike mild steel alternatives, it’s built for longevity under high heat. It outperforms restrictive factory cast components and competes well with aftermarket headers in flow efficiency—without requiring major engine bay modifications.
Best use cases
- →EGR delete diesel builds
- →High-performance towing
- →Off-road racing trucks
- →Turbo upgrade support
- →Exhaust sound enhancement
Is For LB7 LLY LBZ LMM LML 6.6L Duramax Passenger Side Up-pipe + 3 Turbo Down Pipe right for you?
This exhaust kit is best for experienced diesel owners upgrading a Duramax with an EGR delete or off-road setup. It requires professional installation due to exhaust system complexity. Not for stock 2004.5+ EGR-equipped trucks. Consider alternatives if you need emissions-compliant parts or DIY-friendly kits with instructions.
How it compares: Outperforms stock cast iron up-pipes and restrictive down pipes. Offers better flow than standard polypropylene rugs. More affordable than full header systems while delivering similar exhaust efficiency gains for modified Duramax engines.
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What vehicles fit this Duramax up-pipe and down pipe kit?
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Fits 2001–2016 Chevrolet and GMC 2500, 3500, and 4500 models with 6.6L Duramax engines. Direct fit for 2001–2004 LB7 non-EGR models. For 2004.5+ requires EGR delete setup.
Does this kit include installation instructions?
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No, installation instructions are not included. Professional installation is highly recommended due to the complexity of exhaust system work and alignment requirements.
How much horsepower does this down pipe and up-pipe add?
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Supports gains of up to +21 horsepower and +24 ft-lbs of torque by improving exhaust flow and reducing backpressure, especially when paired with other performance upgrades.
Is this up-pipe compatible with EGR systems?
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No, this up-pipe lacks an EGR riser. It's designed for off-road or race use with EGR delete kits. Not suitable for stock emissions-compliant 2004.5+ Duramax engines.
Can I install this down pipe with a stock turbo setup?
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Yes, this kit works with stock turbochargers. It improves exhaust flow and turbo response even without other modifications, though gains are maximized with tuning and deletes.
How much does For LB7 LLY LBZ LMM LML 6.6L Duramax Passenger Side Up-pipe + 3 Turbo Down Pipe cost?
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For LB7 LLY LBZ LMM LML 6.6L Duramax Passenger Side Up-pipe + 3 Turbo Down Pipe is $139.04 at Lab Work Auto. Prices may change — click through to Lab Work Auto for the latest.
Is For LB7 LLY LBZ LMM LML 6.6L Duramax Passenger Side Up-pipe + 3 Turbo Down Pipe in stock at Lab Work Auto?
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Yes, For LB7 LLY LBZ LMM LML 6.6L Duramax Passenger Side Up-pipe + 3 Turbo Down Pipe is currently in stock at Lab Work Auto.
Specifications
- SKU
- F8-015854