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Stainless Works 2020-21 Silverado HD 6.6L 1-7/8in Long Tube Header Kit Performance Connect

SKU: SSWCT220HSTCAT

Headers

SSW Long Tube Headers...

Stainless Works 2020-21 Silverado HD 6.6L 1-7/8in Long Tube Header Kit Performance Connect

SKU: SSWCT220HSTCAT

Headers

SSW Long Tube Headers...

A$4,776.79
Special Order. Contact for ETA. This item is out of stock in our warehouse and partner distribution centres. In some cases, this may be due to not having live inventory feeds available for all suppliers. Please contact us before ordering if you need to meet a specific deadline.
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Description

Upgrade to Long Tube headers on your 2020-21 Chevy Silverado or GMC Sierra HD with this system from Stainless Works. Unleash that 6.6L motor with 1-7/8" primaries that flow into a 3" collector with an integrated merge spike. This system comes with high flow cats and an X-pipe for a simple bolt-on install.

Part Type

Exhaust Header Pipe Kit

Data: v4.2 - Upd: 2026-10-13 16:45:19

Specifications

Product Attributes - Brand
Stainless Works
Product Attributes - Manufacturer's Part Number
CT220HSTCAT
Product Attributes - Part Type
Headers
Product Attributes - Product Line
Stainless Works Performance Headers
Product Attributes - UPC
887753443144
Product Attributes - Header Style
Long tube one-piece
Product Attributes - Header Material
304 stainless steel
Product Attributes - Primary Tube Outside Diameter (in.)
1 7/8 in.
Product Attributes - Header Color
Natural
Product Attributes - Flange Style
Standard
Product Attributes - Weld-Up
No
Product Attributes - Cylinder Head Port Shape
Oval
Product Attributes - Collector Attachment
Slip fit
Product Attributes - Collector Diameter (in.)
3.00
Product Attributes - Collector Reducers Included
No
Product Attributes - Tuned
No
Product Attributes - Primary Tube Gauge
16-gauge
Product Attributes - Flange Thickness (in.)
0.38 in.
Product Attributes - Bolts/Studs Included
Yes
Product Attributes - Gaskets Included
No
Product Attributes - Crossover Pipe Included
Yes
Product Attributes - Crossover Pipe Style
X-pipe
Product Attributes - Crossover Pipe Diameter
3.000 in.
Product Attributes - Catalytic Converter(s) Included
Yes
Product Attributes - Catalytic Converter Quantity
2
Product Attributes - Motor Mounts Included
No
Product Attributes - Transmission Mount Included
No
Product Attributes - Quantity
Sold as a kit.
Product Attributes - Notes
Designed to be used with Stainless Works cat-back systems only.

Reference Information

Brand Name/s Stainless Works
StreetFX SKU sswCT220HSTCAT
SFX Item ID 4082911
Supplier Item Code 4082911
Manufacturer SKU CT220HSTCAT
Manufacturer UPC 887753443144
Alternative References STW-CT220HSTCAT, 6.6L, 1-7/8in

Compatibility

Application Data
  • MakeCHEVROLET
    ModelSILVERADO 2500 HD
    SubmodelCUSTOM
    Beginning Year2020
    Ending Year2023
    Engine TypeV8
    Engine FamilyChevy small block Gen V
    Engine Size6.6L/401
    Drivetrain4WD
    Power SteeringYes
    Power Brakes (application)Yes
    Air ConditioningYes
    Standard Transmission Column ShiftNo
    Standard Transmission Floor ShiftNo
    Automatic Transmission Column ShiftYes
    Automatic Transmission Floor ShiftYes
    Application NotesDesigned to be used with Stainless Works cat-back systems only.
  • MakeCHEVROLET
    ModelSILVERADO 2500 HD
    SubmodelCUSTOM
    Beginning Year2020
    Ending Year2023
    Engine TypeV8
    Engine FamilyChevy small block Gen V
    Engine Size6.6L/401
    DrivetrainRWD
    Power SteeringYes
    Power Brakes (application)Yes
    Air ConditioningYes
    Standard Transmission Column ShiftNo
    Standard Transmission Floor ShiftNo
    Automatic Transmission Column ShiftYes
    Automatic Transmission Floor ShiftYes
    Application NotesDesigned to be used with Stainless Works cat-back systems only.
  • MakeCHEVROLET
    ModelSILVERADO 2500 HD
    SubmodelHIGH COUNTRY
    Beginning Year2020
    Ending Year2023
    Engine TypeV8
    Engine FamilyChevy small block Gen V
    Engine Size6.6L/401
    Drivetrain4WD
    Power SteeringYes
    Power Brakes (application)Yes
    Air ConditioningYes
    Standard Transmission Column ShiftNo
    Standard Transmission Floor ShiftNo
    Automatic Transmission Column ShiftYes
    Automatic Transmission Floor ShiftYes
    Application NotesDesigned to be used with Stainless Works cat-back systems only.
  • MakeCHEVROLET
    ModelSILVERADO 2500 HD
    SubmodelLT
    Beginning Year2020
    Ending Year2023
    Engine TypeV8
    Engine FamilyChevy small block Gen V
    Engine Size6.6L/401
    Drivetrain4WD
    Power SteeringYes
    Power Brakes (application)Yes
    Air ConditioningYes
    Standard Transmission Column ShiftNo
    Standard Transmission Floor ShiftNo
    Automatic Transmission Column ShiftYes
    Automatic Transmission Floor ShiftYes
    Application NotesDesigned to be used with Stainless Works cat-back systems only.
  • MakeCHEVROLET
    ModelSILVERADO 2500 HD
    SubmodelLT
    Beginning Year2020
    Ending Year2023
    Engine TypeV8
    Engine FamilyChevy small block Gen V
    Engine Size6.6L/401
    DrivetrainRWD
    Power SteeringYes
    Power Brakes (application)Yes
    Air ConditioningYes
    Standard Transmission Column ShiftNo
    Standard Transmission Floor ShiftNo
    Automatic Transmission Column ShiftYes
    Automatic Transmission Floor ShiftYes
    Application NotesDesigned to be used with Stainless Works cat-back systems only.
  • MakeCHEVROLET
    ModelSILVERADO 2500 HD
    SubmodelLTZ
    Beginning Year2020
    Ending Year2023
    Engine TypeV8
    Engine FamilyChevy small block Gen V
    Engine Size6.6L/401
    Drivetrain4WD
    Power SteeringYes
    Power Brakes (application)Yes
    Air ConditioningYes
    Standard Transmission Column ShiftNo
    Standard Transmission Floor ShiftNo
    Automatic Transmission Column ShiftYes
    Automatic Transmission Floor ShiftYes
    Application NotesDesigned to be used with Stainless Works cat-back systems only.
  • MakeCHEVROLET
    ModelSILVERADO 2500 HD
    SubmodelLTZ
    Beginning Year2020
    Ending Year2023
    Engine TypeV8
    Engine FamilyChevy small block Gen V
    Engine Size6.6L/401
    DrivetrainRWD
    Power SteeringYes
    Power Brakes (application)Yes
    Air ConditioningYes
    Standard Transmission Column ShiftNo
    Standard Transmission Floor ShiftNo
    Automatic Transmission Column ShiftYes
    Automatic Transmission Floor ShiftYes
    Application NotesDesigned to be used with Stainless Works cat-back systems only.
  • MakeCHEVROLET
    ModelSILVERADO 2500 HD
    SubmodelWT
    Beginning Year2020
    Ending Year2023
    Engine TypeV8
    Engine FamilyChevy small block Gen V
    Engine Size6.6L/401
    Drivetrain4WD
    Power SteeringYes
    Power Brakes (application)Yes
    Air ConditioningYes
    Standard Transmission Column ShiftNo
    Standard Transmission Floor ShiftNo
    Automatic Transmission Column ShiftYes
    Automatic Transmission Floor ShiftYes
    Application NotesDesigned to be used with Stainless Works cat-back systems only.
  • MakeCHEVROLET
    ModelSILVERADO 2500 HD
    SubmodelWT
    Beginning Year2020
    Ending Year2023
    Engine TypeV8
    Engine FamilyChevy small block Gen V
    Engine Size6.6L/401
    DrivetrainRWD
    Power SteeringYes
    Power Brakes (application)Yes
    Air ConditioningYes
    Standard Transmission Column ShiftNo
    Standard Transmission Floor ShiftNo
    Automatic Transmission Column ShiftYes
    Automatic Transmission Floor ShiftYes
    Application NotesDesigned to be used with Stainless Works cat-back systems only.
  • MakeCHEVROLET
    ModelSILVERADO 3500 HD
    SubmodelHIGH COUNTRY
    Beginning Year2020
    Ending Year2023
    Engine TypeV8
    Engine FamilyChevy small block Gen V
    Engine Size6.6L/401
    Drivetrain4WD
    Power SteeringYes
    Power Brakes (application)Yes
    Air ConditioningYes
    Standard Transmission Column ShiftNo
    Standard Transmission Floor ShiftNo
    Automatic Transmission Column ShiftYes
    Automatic Transmission Floor ShiftYes
    Application NotesDesigned to be used with Stainless Works cat-back systems only.
  • MakeCHEVROLET
    ModelSILVERADO 3500 HD
    SubmodelLT
    Beginning Year2020
    Ending Year2023
    Engine TypeV8
    Engine FamilyChevy small block Gen V
    Engine Size6.6L/401
    Drivetrain4WD
    Power SteeringYes
    Power Brakes (application)Yes
    Air ConditioningYes
    Standard Transmission Column ShiftNo
    Standard Transmission Floor ShiftNo
    Automatic Transmission Column ShiftYes
    Automatic Transmission Floor ShiftYes
    Application NotesDesigned to be used with Stainless Works cat-back systems only.
  • MakeCHEVROLET
    ModelSILVERADO 3500 HD
    SubmodelLT
    Beginning Year2020
    Ending Year2023
    Engine TypeV8
    Engine FamilyChevy small block Gen V
    Engine Size6.6L/401
    DrivetrainRWD
    Power SteeringYes
    Power Brakes (application)Yes
    Air ConditioningYes
    Standard Transmission Column ShiftNo
    Standard Transmission Floor ShiftNo
    Automatic Transmission Column ShiftYes
    Automatic Transmission Floor ShiftYes
    Application NotesDesigned to be used with Stainless Works cat-back systems only.
  • MakeCHEVROLET
    ModelSILVERADO 3500 HD
    SubmodelLTZ
    Beginning Year2020
    Ending Year2023
    Engine TypeV8
    Engine FamilyChevy small block Gen V
    Engine Size6.6L/401
    Drivetrain4WD
    Power SteeringYes
    Power Brakes (application)Yes
    Air ConditioningYes
    Standard Transmission Column ShiftNo
    Standard Transmission Floor ShiftNo
    Automatic Transmission Column ShiftYes
    Automatic Transmission Floor ShiftYes
    Application NotesDesigned to be used with Stainless Works cat-back systems only.
  • MakeCHEVROLET
    ModelSILVERADO 3500 HD
    SubmodelLTZ
    Beginning Year2020
    Ending Year2023
    Engine TypeV8
    Engine FamilyChevy small block Gen V
    Engine Size6.6L/401
    DrivetrainRWD
    Power SteeringYes
    Power Brakes (application)Yes
    Air ConditioningYes
    Standard Transmission Column ShiftNo
    Standard Transmission Floor ShiftNo
    Automatic Transmission Column ShiftYes
    Automatic Transmission Floor ShiftYes
    Application NotesDesigned to be used with Stainless Works cat-back systems only.
  • MakeCHEVROLET
    ModelSILVERADO 3500 HD
    SubmodelWT
    Beginning Year2020
    Ending Year2023
    Engine TypeV8
    Engine FamilyChevy small block Gen V
    Engine Size6.6L/401
    Drivetrain4WD
    Power SteeringYes
    Power Brakes (application)Yes
    Air ConditioningYes
    Standard Transmission Column ShiftNo
    Standard Transmission Floor ShiftNo
    Automatic Transmission Column ShiftYes
    Automatic Transmission Floor ShiftYes
    Application NotesDesigned to be used with Stainless Works cat-back systems only.
  • MakeCHEVROLET
    ModelSILVERADO 3500 HD
    SubmodelWT
    Beginning Year2020
    Ending Year2023
    Engine TypeV8
    Engine FamilyChevy small block Gen V
    Engine Size6.6L/401
    DrivetrainRWD
    Power SteeringYes
    Power Brakes (application)Yes
    Air ConditioningYes
    Standard Transmission Column ShiftNo
    Standard Transmission Floor ShiftNo
    Automatic Transmission Column ShiftYes
    Automatic Transmission Floor ShiftYes
    Application NotesDesigned to be used with Stainless Works cat-back systems only.
  • MakeGMC
    ModelSIERRA 2500 HD
    SubmodelAT4
    Beginning Year2020
    Ending Year2023
    Engine TypeV8
    Engine FamilyChevy small block Gen V
    Engine Size6.6L/401
    Drivetrain4WD
    Power SteeringYes
    Power Brakes (application)Yes
    Air ConditioningYes
    Standard Transmission Column ShiftNo
    Standard Transmission Floor ShiftNo
    Automatic Transmission Column ShiftYes
    Automatic Transmission Floor ShiftYes
    Application NotesDesigned to be used with Stainless Works cat-back systems only.
  • MakeGMC
    ModelSIERRA 2500 HD
    SubmodelBASE
    Beginning Year2020
    Ending Year2021
    Engine TypeV8
    Engine FamilyChevy small block Gen V
    Engine Size6.6L/401
    Drivetrain4WD
    Power SteeringYes
    Power Brakes (application)Yes
    Air ConditioningYes
    Standard Transmission Column ShiftNo
    Standard Transmission Floor ShiftNo
    Automatic Transmission Column ShiftYes
    Automatic Transmission Floor ShiftYes
    Application NotesDesigned to be used with Stainless Works cat-back systems only.
  • MakeGMC
    ModelSIERRA 2500 HD
    SubmodelBASE
    Beginning Year2020
    Ending Year2021
    Engine TypeV8
    Engine FamilyChevy small block Gen V
    Engine Size6.6L/401
    DrivetrainRWD
    Power SteeringYes
    Power Brakes (application)Yes
    Air ConditioningYes
    Standard Transmission Column ShiftNo
    Standard Transmission Floor ShiftNo
    Automatic Transmission Column ShiftYes
    Automatic Transmission Floor ShiftYes
    Application NotesDesigned to be used with Stainless Works cat-back systems only.
  • MakeGMC
    ModelSIERRA 2500 HD
    SubmodelDENALI
    Beginning Year2020
    Ending Year2023
    Engine TypeV8
    Engine FamilyChevy small block Gen V
    Engine Size6.6L/401
    Drivetrain4WD
    Power SteeringYes
    Power Brakes (application)Yes
    Air ConditioningYes
    Standard Transmission Column ShiftNo
    Standard Transmission Floor ShiftNo
    Automatic Transmission Column ShiftYes
    Automatic Transmission Floor ShiftYes
    Application NotesDesigned to be used with Stainless Works cat-back systems only.
  • MakeGMC
    ModelSIERRA 2500 HD
    SubmodelPRO
    Beginning Year2022
    Ending Year2023
    Engine TypeV8
    Engine FamilyChevy small block Gen V
    Engine Size6.6L/401
    Drivetrain4WD
    Power SteeringYes
    Power Brakes (application)Yes
    Air ConditioningYes
    Standard Transmission Column ShiftNo
    Standard Transmission Floor ShiftNo
    Automatic Transmission Column ShiftYes
    Automatic Transmission Floor ShiftYes
    Application NotesDesigned to be used with Stainless Works cat-back systems only.
  • MakeGMC
    ModelSIERRA 2500 HD
    SubmodelPRO
    Beginning Year2022
    Ending Year2023
    Engine TypeV8
    Engine FamilyChevy small block Gen V
    Engine Size6.6L/401
    DrivetrainRWD
    Power SteeringYes
    Power Brakes (application)Yes
    Air ConditioningYes
    Standard Transmission Column ShiftNo
    Standard Transmission Floor ShiftNo
    Automatic Transmission Column ShiftYes
    Automatic Transmission Floor ShiftYes
    Application NotesDesigned to be used with Stainless Works cat-back systems only.
  • MakeGMC
    ModelSIERRA 2500 HD
    SubmodelSLE
    Beginning Year2020
    Ending Year2023
    Engine TypeV8
    Engine FamilyChevy small block Gen V
    Engine Size6.6L/401
    Drivetrain4WD
    Power SteeringYes
    Power Brakes (application)Yes
    Air ConditioningYes
    Standard Transmission Column ShiftNo
    Standard Transmission Floor ShiftNo
    Automatic Transmission Column ShiftYes
    Automatic Transmission Floor ShiftYes
    Application NotesDesigned to be used with Stainless Works cat-back systems only.
  • MakeGMC
    ModelSIERRA 2500 HD
    SubmodelSLE
    Beginning Year2020
    Ending Year2023
    Engine TypeV8
    Engine FamilyChevy small block Gen V
    Engine Size6.6L/401
    DrivetrainRWD
    Power SteeringYes
    Power Brakes (application)Yes
    Air ConditioningYes
    Standard Transmission Column ShiftNo
    Standard Transmission Floor ShiftNo
    Automatic Transmission Column ShiftYes
    Automatic Transmission Floor ShiftYes
    Application NotesDesigned to be used with Stainless Works cat-back systems only.
  • MakeGMC
    ModelSIERRA 2500 HD
    SubmodelSLT
    Beginning Year2020
    Ending Year2023
    Engine TypeV8
    Engine FamilyChevy small block Gen V
    Engine Size6.6L/401
    Drivetrain4WD
    Power SteeringYes
    Power Brakes (application)Yes
    Air ConditioningYes
    Standard Transmission Column ShiftNo
    Standard Transmission Floor ShiftNo
    Automatic Transmission Column ShiftYes
    Automatic Transmission Floor ShiftYes
    Application NotesDesigned to be used with Stainless Works cat-back systems only.

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