Exhaust Downpipe · SKU ESP-0004
Exhaust Passenger Side Up-pipe for 2001-2016 LB7 LLY LBZ LMM LML 6.6L Duramax
A 16.9 inch long passenger side up-pipe made from T304 stainless steel for the 2001-2016 LB7, LLY, LBZ, LMM, and LML 6.6L Duramax engines. Fitment is specific to the listed models and years, and does not cover 2017 and later trucks.
- MaterialT304 Stainless Steel
- Size16.9 inch L x 6.6 inch W x 4.3 inch H
- Package1x Up-pipe
- Fitment2001-2016 LB7, LLY, LBZ, LMM, LML 6.6L Duramax
What You Get
Key Benefits
- T304 stainless steel resists corrosion and heat cycling better than mild steel or 201 stainless in high-temperature exhaust environments
- 16.9 inch length matches the factory routing for direct bolt-on installation without modifications
- Bolt-on design eliminates the need for welding or cutting during installation, saving shop labour time
Why Buyers Switch
Problems It Solves
- Factory up-pipes corrode at the flange and manifold joint over time, especially in salted climates
- Mild steel up-pipes fail prematurely due to heat and moisture exposure, leading to customer returns
- Poorly machined flanges leak under boost, causing performance loss and noise
- Universal or cut-to-fit up-pipes require welding, which increases installation time and labour cost
Where It Is Used
Application Scenarios
- Diesel performance shops upgrading older Duramax trucks with improved exhaust flow
- Distributors stocking vehicle-specific up-pipes for the 2001-2016 model range
- Fleet maintenance teams replacing corroded factory up-pipes on high-mileage trucks
- Online sellers needing a photographed, fitment-verified part with a clean product listing
Buyers
Who It Is For
- Performance parts distributors buying Duramax hard parts by the pallet
- Truck accessory wholesalers serving North American diesel truck owners
Construction
Technical Features
- Bolt-on replacement geometry that follows the factory routing
- Designed for 2001-2016 LB7, LLY, LBZ, LMM, and LML 6.6L Duramax engines
Data
Specifications
| Material | T304 Stainless Steel |
|---|---|
| Size | 16.9 inch L x 6.6 inch W x 4.3 inch H |
| Package | 1x Up-pipe |
| Fitment | 2001-2016 LB7, LLY, LBZ, LMM, LML 6.6L Duramax |
Material
Materials
- T304 stainless steel tube
Manufacturing
How It Is Made
Tube bending to match the factory up-pipe routing
Test fit check against the flange pattern before packing
Checks
Quality Control
- Flange bolt pattern and sealing face checked before welding
- Weld seams inspected for pinholes along the full joint
Private Label
Customisation Options
- Private label packaging and barcode labels on request
- Bulk cartons for container orders instead of single retail boxes
Comparison
Compared With The Alternatives
| Factory Duramax up-pipe | The stock pipe is designed for emissions compliance and quieter operation, this one offers a larger bore and better material for durability |
|---|---|
| Mild steel aftermarket up-pipe | Mild steel is cheaper but fails faster under heat and salt exposure; T304 stainless lasts longer in harsh conditions |
| Universal cut-to-fit pipe | A universal pipe requires welding and fitting, this one bolts on directly with no modifications |
Installation
Use Guide
- Confirm the truck is a 2001-2016 LB7, LLY, LBZ, LMM, or LML 6.6L Duramax and not a 2017 or later model
- Let the exhaust cool fully before removing the factory up-pipe
- Replace the turbo inlet gasket rather than reusing the old one
- Torque the flange bolts evenly in a cross pattern to maintain sealing face flatness
- Recheck flange torque after the first heat cycle
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Answers
Questions About This Part
Will this fit a 2017 Duramax truck?
No. The part covers 2001-2016 LB7, LLY, LBZ, LMM, and LML 6.6L Duramax engines and is not designed for 2017 and later models.
What size is the pipe?
16.9 inches long, 6.6 inches wide, and 4.3 inches high. It replaces the factory up-pipe from the turbo to the manifold.
What is included in the package?
One up-pipe. Gaskets and hardware are not included with this part number, so plan on a fresh turbo inlet gasket.
Can we get our own brand on the box?
Yes. Private label packaging and barcode labels can be arranged, and bulk cartons are available for container orders.
Is this street legal where I sell?
Emissions rules differ by market and we make no emissions approval claim for this part. Check your local regulations before resale.
Get This Part Quoted
Send the quantity you need and your market, and the reply will cover price, packing and lead time.