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3.5'' Downpipe Exhaust For 2017-2023 L5P 6.6L Duramax Diesel | SPELAB
3.5'' Downpipe Exhaust For 2017-2023 L5P 6.6L Duramax Diesel | SPELAB
3.5'' Downpipe Exhaust For 2017-2023 L5P 6.6L Duramax Diesel | SPELAB
3.5'' Downpipe Exhaust For 2017-2023 L5P 6.6L Duramax Diesel | SPELAB
3.5'' Downpipe Exhaust For 2017-2023 L5P 6.6L Duramax Diesel | SPELAB
3.5'' Downpipe Exhaust For 2017-2023 L5P 6.6L Duramax Diesel | SPELAB
3.5'' Downpipe Exhaust For 2017-2023 L5P 6.6L Duramax Diesel | SPELAB
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3.5'' Downpipe Exhaust For 2017-2023 L5P 6.6L Duramax Diesel | SPELAB

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SPELAB
SPES08074
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Downpipe Exhaust
$259.00
$259.00

3.5'' Downpipe Exhaust For 2017-2023 L5P 6.6L Duramax Diesel

3.5'' Downpipe Exhaust For 2017-2023 L5P 6.6L Duramax Diesel | SPELAB

This 3.5" turbocharger downpipe will increase exhaust flow, improving performance.  

Specifications:

Brand Name: SPELAB
Application:  Downpipe Exhaust
Material: Stainless Steel
Surface: Mirror Polish
Type: 3.5 Inch Downpipe for 2017,2018,2019,2020,2021,2022,2023 Chevrolet Silverado & GMC Sierra 2500 & 3500HD L5P 6.6 Duramax Diesel 

Fitment:

2017,2018,2019,2020,2021,2022,2023 Chevrolet Silverado & GMC Sierra 2500 & 3500HD 6.6L Duramax pickup trucks. Will not fit Cab & Chassis trucks.

What does a downpipe do?

The downpipe on your turbocharged vehicle is directing the exhaust gases out of the turbine housing into the exhaust system. An aftermarket downpipe will typically be larger in diameter and either uses a high-flowing catalytic converter or remove the catalytic converter altogether.

By removing the factory downpipe and replacing it with a high flowing unit you are allowing the turbo to more efficiently move gases away from the turbine which creates more power. Since the factory restrictions are now gone you can increase the boost on the vehicle as the factory downpipe is a choking point for performance.

Customer Reviews

Based on 4 reviews
100%
(4)
0%
(0)
0%
(0)
0%
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(0)
A
Aaron Fernandes
No complaints!

I ordered my down pipe and it showed up on my doorstep in a week. The install went very smooth once the turbo was pulled. I advise wearing gloves when putting the heat wrap on. It’s full of what I assume is tiny fiberglass shards. It’ll wreck your hands.

Thanks for the review!!!

C
Conner Walker

Sounds damn good

Thanks for the review!!!Very much looking forward to your feedback pictures.

S
Spencer Bevington
Great price great product

Part fit perfect.

Thanks for the review!!!Very much looking forward to your feedback pictures.

G
Garrett Quinlan
Downpipe

Fit perfect sounds great everything I needed was included

Thanks for the review!!!

Customer Reviews

Based on 4 reviews
100%
(4)
0%
(0)
0%
(0)
0%
(0)
0%
(0)
A
Aaron Fernandes
No complaints!

I ordered my down pipe and it showed up on my doorstep in a week. The install went very smooth once the turbo was pulled. I advise wearing gloves when putting the heat wrap on. It’s full of what I assume is tiny fiberglass shards. It’ll wreck your hands.

Thanks for the review!!!

C
Conner Walker

Sounds damn good

Thanks for the review!!!Very much looking forward to your feedback pictures.

S
Spencer Bevington
Great price great product

Part fit perfect.

Thanks for the review!!!Very much looking forward to your feedback pictures.

G
Garrett Quinlan
Downpipe

Fit perfect sounds great everything I needed was included

Thanks for the review!!!

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