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2018 GMC Sierra 3500 HD
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Engine & Drivetrain
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OEM (Genuine) 2018 GMC Sierra 3500 HD 3Way Catalytic Convertor Assembly (W/Exhaust Pipe)
PartNumber: 84053221
Product Specifications- Notes: Catalytic Converter; Silverado, Sierra; 6.0L; 3500
- Other Names: Catalytic Converter
- Item Dimensions: 63.4 x 33.9 x 15.8 inches
- Item Weight: 49.20 Pounds
- Replaced by: 19420277
- Part Description: 2018 GMC Sierra 3500 HD 3Way Catalytic Convertor Assembly (W/Exhaust Pipe)
Vehicle Fitment- 2018 GMC Sierra 3500 HD | Base, Denali, SLE, SLT, WT | 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L FLEX, 8 Cyl 6.0 L GAS
$2020.25 MSRP:$2851.27You Save: $831.02 (30%)
OEM (Genuine) 2018 GMC Sierra 3500 HD Muffler & Pipe
PartNumber: 85165533
Product Specifications- Notes: 6.6 Liter Diesel, Double Cab, 8 Ft Box; Sierra, Silverado; Regular Cab
- Other Names: Diesel Particulate Filter, Muffler & Pipe
- Replaces: 84181080
- Replaced by: 86534411
- Part Description: 2018 GMC Sierra 3500 HD Muffler & Pipe
Vehicle Fitment- 2018 GMC Sierra 3500 HD | Base, Denali, SLE, SLT | 8 Cyl 6.6 L DIESEL
$1574.73 MSRP:$2362.97You Save: $788.24 (34%)
OEM (Genuine) 2018 GMC Sierra 3500 HD Converter
PartNumber: 12705096
Product Specifications- Notes: 2017-19, Turbo & Exhaust Components; Catalytic Converter; Silverado, Sierra; 6.6L; Upper
- Other Names: Catalytic Converter, Converter
- Fitment Type: Direct Replacement
- Replaces: 19420224, 12680277
- Part Description: 2018 GMC Sierra 3500 HD Converter
Vehicle Fitment- 2018 GMC Sierra 3500 HD | AT4, Base, Denali, SLE, SLT | 8 Cyl 6.6 L DIESEL
$699.02 MSRP:$1041.67You Save: $342.65 (33%)
OEM (Genuine) 2018 GMC Sierra 3500 HD Catalytic Converter
PartNumber: 19420224
Product Specifications- Notes: Catalytic Converter; Silverado, Sierra; 6.6L; Upper
- Other Names: Catalytic Converter
- Fitment Type: Direct Replacement
- Replaced by: 12705096
- Part Description: 2018 GMC Sierra 3500 HD Catalytic Converter
Vehicle Fitment- 2018 GMC Sierra 3500 HD | AT4, Base, Denali, SLE, SLT | 8 Cyl 6.6 L DIESEL
$699.02 MSRP:$1041.67You Save: $342.65 (33%)
OEM (Genuine) 2018 GMC Sierra 3500 HD Converter & Pipe Seal
PartNumber: 84013962
Product Specifications- Notes: 6.6 Liter Diesel
- Other Names: Converter & Pipe Seal
- Item Dimensions: 4.6 x 4.8 x 1.3 inches
- Item Weight: 0.70 Pounds
- Fitment Type: Direct Replacement
- Part Description: 2018 GMC Sierra 3500 HD Converter & Pipe Seal
Vehicle Fitment- 2018 GMC Sierra 3500 HD | AT4, Base, Denali, SLE, SLT | 8 Cyl 6.6 L DIESEL
$7.66 MSRP:$11.53You Save: $3.87 (34%)
OEM (Genuine) 2018 GMC Sierra 3500 HD Converter & Pipe Seal
PartNumber: 20987829
Product Specifications- Notes: 6.0 Liter
- Location: Passenger Side
- Other Names: Converter & Pipe Seal
- Item Dimensions: 4.0 x 4.1 x 1.1 inches
- Item Weight: 0.50 Pounds
- Fitment Type: Direct Replacement
- Replaces: 15890981
- Part Description: 2018 GMC Sierra 3500 HD Converter & Pipe Seal
Vehicle Fitment- 2018 GMC Sierra 3500 HD | AT4, Base, Denali, SLE, SLT, WT | 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L FLEX, 8 Cyl 6.0 L GAS, 8 Cyl 6.6 L GAS
$14.29 MSRP:$23.64You Save: $9.35 (40%)OEM (Genuine) 2018 GMC Sierra 3500 HD CONVERTER ASM, 3WAY CTLTC(W/EXH PIPE)
PartNumber: 19420277Product Specifications- Notes: 6.0 Liter; Catalytic Converter; Silverado, Sierra; 6.0L; 3500
- Other Names: Catalytic Converter, Converter & Pipe
- Fitment Type: Direct Replacement
- Replaces: 23268768, 25811714, 84053222, 84053221
- Part Description: 2018 GMC Sierra 3500 HD CONVERTER ASM, 3WAY CTLTC(W/EXH PIPE)
Vehicle Fitment- 2018 GMC Sierra 3500 HD | Base, Denali, SLE, SLT, WT | 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L FLEX, 8 Cyl 6.0 L GAS
$2020.25 MSRP:$2851.27You Save: $831.02 (30%)
OEM (Genuine) 2018 GMC Sierra 3500 HD Converter & Pipe
PartNumber: 19420301
Product Specifications- Notes: Catalytic Converter; Silverado, Sierra; 6.6L; Lower; 6.6 Liter Diesel, 2ND Design
- Other Names: Catalytic Converter, Converter & Pipe
- Fitment Type: Direct Replacement
- Replaces: 84235516, 84189362, 84362533
- Part Description: 2018 GMC Sierra 3500 HD Converter & Pipe
Vehicle Fitment- 2018 GMC Sierra 3500 HD | Base, Denali, SLE, SLT | 8 Cyl 6.6 L DIESEL
$999.58 MSRP:$1495.00You Save: $495.42 (34%)OEM (Genuine) 2018 GMC Sierra 3500 HD Muffler & Pipe
PartNumber: 84614676Product Specifications- Notes: 6.6 Liter Diesel, Crew Cab, 6.6 Ft Box; Sierra, Silverado; Crew Cab;Sierra, Silverado; Double Cab; Long Wheel Base
- Other Names: Diesel Particulate Filter, Muffler & Pipe
- Item Dimensions: 137.8 x 23.0 x 14.7 inches
- Item Weight: 74.40 Pounds
- Fitment Type: Direct Replacement
- Replaced by: 86534413
- Part Description: 2018 GMC Sierra 3500 HD Muffler & Pipe
Vehicle Fitment- 2018 GMC Sierra 3500 HD | Base, Denali, SLE, SLT | 8 Cyl 6.6 L DIESEL
$1737.48 MSRP:$2608.50You Save: $871.02 (34%)
OEM (Genuine) 2018 GMC Sierra 3500 HD Converter & Pipe Seal
PartNumber: 15077362
Product Specifications- Notes: 6.0 Liter
- Location: Driver Side
- Other Names: Converter & Pipe Seal, Flange Gasket
- Item Dimensions: 3.9 x 3.9 x 0.4 inches
- Item Weight: 0.30 Pounds
- Fitment Type: Direct Replacement
- Replaces: 15715548
- Part Description: 2018 GMC Sierra 3500 HD Converter & Pipe Seal
Vehicle Fitment- 2018 GMC Sierra 3500 HD | AT4, Base, Denali, SLE, SLT, WT | 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L FLEX, 8 Cyl 6.0 L GAS, 8 Cyl 6.6 L GAS