PPE 304 Stainless Steel Free-Flow Down Pipe – 2011–2015 Chevy/GMC Duramax LML
Part Number: 117000600
GTIN: 840171210323
OEM Reference: GM 12643610
CARB EO Number: D-701-30
Upgrade Your Duramax’s Breathing Power
The stock LML down pipe is one of the most restrictive parts of your exhaust system. It makes a sharp turn right off the turbo flange and even has dents in the piping that choke flow (seriously, who thought that was a good idea?). The result? Higher EGTs, sluggish turbo response, and lost horsepower.
The PPE Free-Flow Down Pipe fixes all that. Built from 3-inch 304 stainless steel, this high-flow design gives your turbo the path it deserves; smooth, unrestricted, and durable enough to outlast your truck. Plus, it comes wrapped in a woven titanium heat sleeve to keep under-hood temps down where they belong.
Key Features
-
304 Stainless Steel Construction – Built tough for long life and corrosion resistance.
-
Lower EGTs & Better Turbo Response – Frees up horsepower your stock down pipe is holding back.
-
TIG-Welded Flanges – Leak-free, precision-built connections that hold up to serious boost.
-
Smooth, Free-Flowing Design – No dents, no restrictions, just clean flow.
-
Titanium Heat Sleeve Included – Protects engine bay components and manages temps.
-
Sensor-Friendly – Retains factory ports (2x M20-1.5 & 1x M14-1.5).
-
Fits Factory or PPE Up-Pipes – A true drop-in upgrade.
Vehicle Compatibility
-
2011–2015 Chevy/GMC Duramax LML
Note: Only fits models with a clamp-style connection to the exhaust pipe.
Added Value
-
3-Year Limited Warranty
-
30-Day Returns
-
FREE Shipping on orders $100+
Why Upgrade to PPE’s Free-Flow Down Pipe?
If you’re after cooler EGTs, snappier turbo spool, and a stronger stainless steel design that won’t rust out like stock, this down pipe is a no-brainer. Whether you’re towing, daily driving, or chasing horsepower goals, PPE’s high-flow design unlocks performance your LML has been missing.
Product Information
Product Information
Shipping & Returns
Shipping & Returns
PPE 304 Stainless Steel Free-Flow Down Pipe – 2011–2015 Chevy/GMC Duramax LML
PPE 304 Stainless Steel Free-Flow Down Pipe – 2011–2015 Chevy/GMC Duramax LML
Part Number: 117000600
GTIN: 840171210323
OEM Reference: GM 12643610
CARB EO Number: D-701-30
Upgrade Your Duramax’s Breathing Power
The stock LML down pipe is one of the most restrictive parts of your exhaust system. It makes a sharp turn right off the turbo flange and even has dents in the piping that choke flow (seriously, who thought that was a good idea?). The result? Higher EGTs, sluggish turbo response, and lost horsepower.
The PPE Free-Flow Down Pipe fixes all that. Built from 3-inch 304 stainless steel, this high-flow design gives your turbo the path it deserves; smooth, unrestricted, and durable enough to outlast your truck. Plus, it comes wrapped in a woven titanium heat sleeve to keep under-hood temps down where they belong.
Key Features
-
304 Stainless Steel Construction – Built tough for long life and corrosion resistance.
-
Lower EGTs & Better Turbo Response – Frees up horsepower your stock down pipe is holding back.
-
TIG-Welded Flanges – Leak-free, precision-built connections that hold up to serious boost.
-
Smooth, Free-Flowing Design – No dents, no restrictions, just clean flow.
-
Titanium Heat Sleeve Included – Protects engine bay components and manages temps.
-
Sensor-Friendly – Retains factory ports (2x M20-1.5 & 1x M14-1.5).
-
Fits Factory or PPE Up-Pipes – A true drop-in upgrade.
Vehicle Compatibility
-
2011–2015 Chevy/GMC Duramax LML
Note: Only fits models with a clamp-style connection to the exhaust pipe.
Added Value
-
3-Year Limited Warranty
-
30-Day Returns
-
FREE Shipping on orders $100+
Why Upgrade to PPE’s Free-Flow Down Pipe?
If you’re after cooler EGTs, snappier turbo spool, and a stronger stainless steel design that won’t rust out like stock, this down pipe is a no-brainer. Whether you’re towing, daily driving, or chasing horsepower goals, PPE’s high-flow design unlocks performance your LML has been missing.
Original: $152.99
-65%$152.99
$53.55Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
Part Number: 117000600
GTIN: 840171210323
OEM Reference: GM 12643610
CARB EO Number: D-701-30
Upgrade Your Duramax’s Breathing Power
The stock LML down pipe is one of the most restrictive parts of your exhaust system. It makes a sharp turn right off the turbo flange and even has dents in the piping that choke flow (seriously, who thought that was a good idea?). The result? Higher EGTs, sluggish turbo response, and lost horsepower.
The PPE Free-Flow Down Pipe fixes all that. Built from 3-inch 304 stainless steel, this high-flow design gives your turbo the path it deserves; smooth, unrestricted, and durable enough to outlast your truck. Plus, it comes wrapped in a woven titanium heat sleeve to keep under-hood temps down where they belong.
Key Features
-
304 Stainless Steel Construction – Built tough for long life and corrosion resistance.
-
Lower EGTs & Better Turbo Response – Frees up horsepower your stock down pipe is holding back.
-
TIG-Welded Flanges – Leak-free, precision-built connections that hold up to serious boost.
-
Smooth, Free-Flowing Design – No dents, no restrictions, just clean flow.
-
Titanium Heat Sleeve Included – Protects engine bay components and manages temps.
-
Sensor-Friendly – Retains factory ports (2x M20-1.5 & 1x M14-1.5).
-
Fits Factory or PPE Up-Pipes – A true drop-in upgrade.
Vehicle Compatibility
-
2011–2015 Chevy/GMC Duramax LML
Note: Only fits models with a clamp-style connection to the exhaust pipe.
Added Value
-
3-Year Limited Warranty
-
30-Day Returns
-
FREE Shipping on orders $100+
Why Upgrade to PPE’s Free-Flow Down Pipe?
If you’re after cooler EGTs, snappier turbo spool, and a stronger stainless steel design that won’t rust out like stock, this down pipe is a no-brainer. Whether you’re towing, daily driving, or chasing horsepower goals, PPE’s high-flow design unlocks performance your LML has been missing.
