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 2" primaries that flow into a 3" collector with an integrated merge spike. This system comes with high flow cats and a Y-pipe for a simple bolt-on install.
This Part Fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2020-2022 | Chevrolet | Silverado 2500 HD | Custom |
| 2020-2022 | Chevrolet | Silverado 2500 HD | High Country |
| 2020-2022 | Chevrolet | Silverado 2500 HD | LT |
| 2020-2022 | Chevrolet | Silverado 2500 HD | LTZ |
| 2020-2022 | Chevrolet | Silverado 2500 HD | WT |
| 2020-2022 | Chevrolet | Silverado 3500 HD | High Country |
| 2020-2022 | Chevrolet | Silverado 3500 HD | LT |
| 2020-2022 | Chevrolet | Silverado 3500 HD | LTZ |
| 2020-2022 | Chevrolet | Silverado 3500 HD | WT |
| 2020-2022 | GMC | Sierra 2500 HD | AT4 |
| 2020-2021 | GMC | Sierra 2500 HD | Base |
| 2020-2022 | GMC | Sierra 2500 HD | Denali |
| 2022 | GMC | Sierra 2500 HD | Pro |
| 2020-2022 | GMC | Sierra 2500 HD | SLE |
| 2020-2022 | GMC | Sierra 2500 HD | SLT |
| 2020-2022 | GMC | Sierra 3500 HD | AT4 |
| 2020-2021 | GMC | Sierra 3500 HD | Base |
| 2020-2022 | GMC | Sierra 3500 HD | Denali |
| 2022 | GMC | Sierra 3500 HD | Pro |
| 2020-2022 | GMC | Sierra 3500 HD | SLE |
| 2020-2022 | GMC | Sierra 3500 HD | SLT |
- 2020-chevrolet-silverado-2500-hd-custom-esi5827489
- 2020-chevrolet-silverado-2500-hd-high-country-esi5106238
- 2020-chevrolet-silverado-2500-hd-lt-esi6191913
- 2020-chevrolet-silverado-2500-hd-ltz-esi7573830
- 2020-chevrolet-silverado-3500-hd-high-country-esi1816732
- 2020-chevrolet-silverado-3500-hd-lt-esi7043819
- 2020-gmc-sierra-2500-hd-at4-esi8598502
- 2020-gmc-sierra-2500-hd-base-esi4820539
- 2020-gmc-sierra-2500-hd-denali-esi4038086
- 2020-gmc-sierra-2500-hd-slt-esi1033969
- 2020-gmc-sierra-3500-hd-at4-esi7639841
- 2020-gmc-sierra-3500-hd-base-esi4989089
- 2020-gmc-sierra-3500-hd-denali-esi4543790
- 2021-chevrolet-silverado-2500-hd-custom-esi5526254
- 2021-chevrolet-silverado-2500-hd-high-country-esi4813203
- 2021-chevrolet-silverado-2500-hd-lt-esi8800061
- 2021-chevrolet-silverado-2500-hd-wt-esi9078755
- 2021-chevrolet-silverado-3500-hd-high-country-esi8279025
- 2021-chevrolet-silverado-3500-hd-lt-esi6208496
- 2021-gmc-sierra-2500-hd-at4-esi6326872
- 2021-gmc-sierra-2500-hd-base-esi6921392
- 2021-gmc-sierra-2500-hd-denali-esi4675800
- 2021-gmc-sierra-2500-hd-slt-esi2885890
- 2021-gmc-sierra-3500-hd-at4-esi3744773
- 2021-gmc-sierra-3500-hd-base-esi2388052
- 2021-gmc-sierra-3500-hd-denali-esi4288060
- 2022-chevrolet-silverado-2500-hd-custom-esi5212432
- 2022-chevrolet-silverado-2500-hd-high-country-esi7036258
- 2022-chevrolet-silverado-2500-hd-lt-esi4449841
- 2022-chevrolet-silverado-3500-hd-high-country-esi4763212
- 2022-chevrolet-silverado-3500-hd-lt-esi7712359
- 2022-gmc-sierra-2500-hd-at4-esi1045907
- 2022-gmc-sierra-2500-hd-denali-esi4423037
- 2022-gmc-sierra-2500-hd-pro-esi5789822
- 2022-gmc-sierra-2500-hd-sle-esi8565572
- 2022-gmc-sierra-2500-hd-slt-esi9732352
- 2022-gmc-sierra-3500-hd-at4-esi6595726
- 2022-gmc-sierra-3500-hd-denali-esi7543051
- 2022-gmc-sierra-3500-hd-pro-esi2795639
- 2022-gmc-sierra-3500-hd-sle-esi2808566
- ClearanceItem:N
- EPA:N/A
- Exhaust- Mufflers & Tips>Headers & Manifolds
- fits_2020-2022`Chevrolet`Silverado 2500 HD`Custom~2020-2022`Chevrolet`Silverado 2500 HD`High Country~2020-2022`Chevrolet`Silverado 2500 HD`LT~2020-2022`Chevrolet`Silverado 2500 HD`LTZ~2020-2022`Chevrolet`Silverado 2500 HD`WT
- fits_2020-2022`Chevrolet`Silverado 3500 HD`High Country~2020-2022`Chevrolet`Silverado 3500 HD`LT~2020-2022`Chevrolet`Silverado 3500 HD`LTZ~2020-2022`Chevrolet`Silverado 3500 HD`WT~2020-2022`GMC`Sierra 2500 HD`AT4~2020-2021`GMC`Sierra 2500 HD`Base
- fits_2020-2022`GMC`Sierra 2500 HD`Denali~2022`GMC`Sierra 2500 HD`Pro~2020-2022`GMC`Sierra 2500 HD`SLE~2020-2022`GMC`Sierra 2500 HD`SLT~2020-2022`GMC`Sierra 3500 HD`AT4~2020-2021`GMC`Sierra 3500 HD`Base~2020-2022`GMC`Sierra 3500 HD`Denali
- fits_2022`GMC`Sierra 3500 HD`Pro~2020-2022`GMC`Sierra 3500 HD`SLE~2020-2022`GMC`Sierra 3500 HD`SLT
- LTL:N
- MPN:CT220HCATY
- Non-CARB:Y
- Prop65:Y
- SpecialOrder:Y