Exhaust Downpipe · SKU SPAS-1234
5 Inch 2013-2018 2500/3500 6.7L CUMMINS DOWNPIPE EXHAUST SYSTEM PIPE KITS
Fitment is year and model specific and does not cover Cab and Chassis trucks.
- Size5 inch
- Fitment2013-2018 2500 and 3500 6.7L Cummins
- ExclusionDoes not fit Cab and Chassis trucks
What You Get
Key Benefits
- 5 inch bore opens the turbo outlet to reduce exhaust back pressure and improve turbo spool
- 201 stainless steel resists corrosion and heat cycling better than mild steel in salt-prone environments
- Three-piece turbo pipe kit allows for precise routing without custom welding or fabrication
Why Buyers Switch
Problems It Solves
- Factory downpipes restrict turbo flow and increase exhaust gas temperature under load
- Mild steel aftermarket pipes corrode at the flange and fail within a few winter seasons
- Generic universal kits require cutting and welding, which increases shop labour and risk of leaks
- Lack of heat protection leads to underhood component damage and reduced system longevity
Where It Is Used
Application Scenarios
- Diesel truck shops upgrading 6.7L Cummins trucks for improved towing performance
- Distributors stocking vehicle-specific exhaust kits for the 2013-2018 model years
- Fleet workshops replacing factory downpipes that fail due to heat and salt exposure
- Online sellers needing a complete, photographed exhaust kit with a clear fitment list
Buyers
Who It Is For
- Performance parts distributors buying Cummins hard parts by the pallet
- Truck accessory wholesalers serving North American heavy-duty truck owners
Construction
Technical Features
- Bolt-on replacement geometry that follows the factory routing
Data
Specifications
| Size | 5 inch |
|---|---|
| Fitment | 2013-2018 2500 and 3500 6.7L Cummins |
| Exclusion | Does not fit Cab and Chassis trucks |
Material
Materials
- 201 stainless steel tube
Manufacturing
How It Is Made
Tube bending to match factory downpipe routing
Test fit check against flange pattern before packaging
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 available for container orders instead of retail boxes
Comparison
Compared With The Alternatives
| Mild steel aftermarket downpipe | Mild steel is cheaper but corrodes at the flange; 201 stainless resists salt and heat cycling |
|---|---|
| Universal cut-to-fit kit | A universal kit requires welding and fitting, this one bolts on without modification |
Installation
Use Guide
- Confirm the truck is a 2013-2018 2500 or 3500 6.7L Cummins pickup and not a Cab and Chassis model
- Let the exhaust cool fully before removing the factory downpipe
- Replace the turbo outlet gasket rather than reusing the old one
- Torque 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 2015 3500HD Cab and Chassis?
No. The part covers 2013-2018 2500 and 3500 6.7L Cummins pickup trucks and is not designed for Cab and Chassis models.
What size is the pipe?
5 inch. It replaces the factory downpipe from the turbo outlet.
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.