My Garage
My Account
Cart
Genuine 2018 GMC Sierra Muffler
Exhaust Muffler- Select Vehicle by Model
- Select Vehicle by VIN
Select Vehicle by Model
orMake
Model
Year
Select Vehicle by VIN
For the most accurate results, select vehicle by your VIN (Vehicle Identification Number).
19 Mufflers found
2018 GMC Sierra 5.3L Cat-Back Single Exit Exhaust Upgrade System with Polished Tip
Part Number: 23442234$985.88 MSRP: $1195.00You Save: $209.12 (18%)Ships in 1-3 Business DaysProduct Specifications- Other Name: Muffler Assembly, Exh Rr (W/ Exh Pipe)
- Item Weight: 67.40 Pounds
- Item Dimensions: 60.7 x 21.8 x 15.6 inches
- Condition: New
- Fitment Type: Direct Replacement
- Product Grade: Performance Parts
- SKU: 23442234
- Warranty: This genuine part is guaranteed by GM's factory warranty.
2018 GMC Sierra 5.3L Cat-Back Single Exit Exhaust Upgrade System with Polished Tip
Part Number: 23442233$985.88 MSRP: $1195.00You Save: $209.12 (18%)Ships in 1-3 Business DaysProduct Specifications- Other Name: Muffler Assembly, Exh Rr (W/ Exh Pipe)
- Item Weight: 66.50 Pounds
- Item Dimensions: 59.0 x 21.2 x 15.4 inches
- Condition: New
- Fitment Type: Direct Replacement
- Product Grade: Performance Parts
- SKU: 23442233
- Warranty: This genuine part is guaranteed by GM's factory warranty.
2018 GMC Sierra Muffler Assembly, Exh (W/ Exh Pipe)
Part Number: 84665236$669.59 MSRP: $1010.14You Save: $340.55 (34%)Ships in 1-3 Business DaysProduct Specifications- Other Name: Muffler, Muffler & Pipe
- Replaces: 23377842, 23487119, 84327965, 84053744, 20757703, 23239259, 23219691, 84020522
- Item Weight: 49.50 Pounds
- Item Dimensions: 23.6 x 126.0 x 13.0 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 84665236
- Warranty: This genuine part is guaranteed by GM's factory warranty.
2018 GMC Sierra Muffler Assembly, Exhaust (W/ Exhaust Pipe)
Part Number: 84308119$765.06 MSRP: $1154.16You Save: $389.10 (34%)Ships in 1-3 Business DaysProduct Specifications- Other Name: Muffler Assembly, Exh (W/ Exh Pipe); Muffler, Muffler & Pipe
- Replaces: 20757692, 23199937, 23219683, 84012771
- Item Weight: 67.90 Pounds
- Item Dimensions: 138.0 x 31.0 x 16.4 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 84308119
- Warranty: This genuine part is guaranteed by GM's factory warranty.
2018 GMC Sierra Exhaust Muffler Assembly (W/ Exhaust Pipe & Tail Pipe)
Part Number: 25811687$907.92 MSRP: $1369.69You Save: $461.77 (34%)Ships in 1-3 Business DaysProduct Specifications- Other Name: Muffler Assembly, Exhaust (W/ Exhaust Pipe & Tail Pipe); Muffler, Muffler & Pipe
- Item Weight: 69.30 Pounds
- Item Dimensions: 144.1 x 27.7 x 17.9 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 25811687
- Warranty: This genuine part is guaranteed by GM's factory warranty.
2018 GMC Sierra Muffler Assembly, Exh (W/ Exh Pipe)
Part Number: 84665240$623.60 MSRP: $940.75You Save: $317.15 (34%)Ships in 1-3 Business DaysProduct Specifications- Replaced by: 85052295
- Replaces: 84327966, 84053745
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 84665240
- Warranty: This genuine part is guaranteed by GM's factory warranty.
2018 GMC Sierra Muffler Assembly, Exh (W/ Exh Pipe)
Part Number: 84665237$700.99 MSRP: $1057.51You Save: $356.52 (34%)Ships in 1-3 Business DaysProduct Specifications- Other Name: Muffler, Muffler & Pipe
- Replaced by: 85052292
- Replaces: 84020521, 20757702, 23487118, 23219690, 84327964, 84053743, 23239258, 23377841
- Item Weight: 47.40 Pounds
- Item Dimensions: 136.9 x 23.8 x 13.7 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 84665237
- Warranty: This genuine part is guaranteed by GM's factory warranty.
2018 GMC Sierra Muffler Assembly, Exhaust (W/ Exhaust Pipe)
Part Number: 84308118$358.22 MSRP: $537.97You Save: $179.75 (34%)Ships in 1-3 Business DaysProduct Specifications- Other Name: Muffler Assembly, Exh (W/ Exh Pipe); Fan Blade, Muffler, Muffler & Pipe
- Replaces: 23440153, 23219684, 20757688, 23377852, 84012770
- Item Weight: 63.70 Pounds
- Item Dimensions: 125.5 x 30.8 x 16.3 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 84308118
- Warranty: This genuine part is guaranteed by GM's factory warranty.
2018 GMC Sierra Exhaust Muffler Assembly (W/ Exhaust Pipe & Tail Pipe)
Part Number: 25811686$832.36 MSRP: $1255.70You Save: $423.34 (34%)Ships in 1-3 Business DaysProduct Specifications- Other Name: Muffler Assembly, Exhaust (W/ Exhaust Pipe & Tail Pipe); Muffler, Muffler & Pipe
- Item Weight: 60.50 Pounds
- Item Dimensions: 112.1 x 28.2 x 18.2 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 25811686
- Warranty: This genuine part is guaranteed by GM's factory warranty.
2018 GMC Sierra Muffler Assembly, Exhaust (W/ Exhaust Pipe)
Part Number: 23211428$380.39 MSRP: $571.26You Save: $190.87 (34%)Ships in 1-3 Business DaysProduct Specifications- Other Name: Muffler Assembly, Exh (W/ Exh Pipe)
- Item Dimensions: 88.9 x 19.1 x 14.8 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 23211428
- Warranty: This genuine part is guaranteed by GM's factory warranty.
2018 GMC Sierra Muffler Assembly, Exhaust (W/ Exhaust Pipe)
Part Number: 23211430$389.83 MSRP: $585.45You Save: $195.62 (34%)Ships in 1-3 Business DaysProduct Specifications- Other Name: Muffler Assembly, Exh (W/ Exh Pipe)
- Item Dimensions: 123.1 x 19.1 x 15.2 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 23211430
- Warranty: This genuine part is guaranteed by GM's factory warranty.
2018 GMC Sierra Muffler Assembly, Exhaust (W/ Exhaust Pipe)
Part Number: 23211429$422.49 MSRP: $634.49You Save: $212.00 (34%)Ships in 1-3 Business DaysProduct Specifications- Other Name: Muffler Assembly, Exh (W/ Exh Pipe)
- Item Dimensions: 112.2 x 18.5 x 14.7 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 23211429
- Warranty: This genuine part is guaranteed by GM's factory warranty.
2018 GMC Sierra Muffler Assembly, Exh (W/ Exh Pipe)
Part Number: 84665241$635.94 MSRP: $959.38You Save: $323.44 (34%)Ships in 1-3 Business DaysProduct Specifications- Other Name: Muffler & Pipe
- Replaced by: 85052296
- Replaces: 84053746, 84327967
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 84665241
- Warranty: This genuine part is guaranteed by GM's factory warranty.
2018 GMC Sierra Muffler Assembly, Exhaust (W/ Exhaust Pipe)
Part Number: 84308120$832.36 MSRP: $1255.70You Save: $423.34 (34%)Product Specifications- Other Name: Muffler Assembly, Exh (W/ Exh Pipe); Mirror Assembly, Muffler & Pipe
- Replaces: 23377854, 23219682, 84012772, 23239251
- Item Dimensions: 133.1 x 24.1 x 13.8 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 84308120
- Warranty: This genuine part is guaranteed by GM's factory warranty.
2018 GMC Sierra Exhaust Muffler Assembly (W/ Exhaust Pipe & Tail Pipe)
Part Number: 25811688$879.59 MSRP: $1326.95You Save: $447.36 (34%)Ships in 1-3 Business DaysProduct Specifications- Other Name: Muffler Assembly, Exhaust (W/ Exhaust Pipe & Tail Pipe); Muffler, Muffler & Pipe
- Item Weight: 61.60 Pounds
- Item Dimensions: 134.2 x 28.2 x 18.6 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 25811688
- Warranty: This genuine part is guaranteed by GM's factory warranty.
2018 GMC Sierra Exhaust Muffler Assembly (W/ Exhaust Pipe & Tail Pipe)
Part Number: 25811684$903.02 MSRP: $1362.29You Save: $459.27 (34%)Ships in 1-3 Business DaysProduct Specifications- Other Name: Muffler Assembly, Exhaust (W/ Exhaust Pipe & Tail Pipe); Muffler, Muffler & Pipe
- Item Weight: 59.90 Pounds
- Item Dimensions: 123.4 x 27.7 x 18.1 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 25811684
- Warranty: This genuine part is guaranteed by GM's factory warranty.
2018 GMC Sierra Exhaust Muffler Assembly (W/ Exhaust Pipe & Tail Pipe)
Part Number: 25811685$977.59 MSRP: $1474.79You Save: $497.20 (34%)Product Specifications- Other Name: Muffler Assembly, Exhaust (W/ Exhaust Pipe & Tail Pipe); Muffler & Pipe
- Item Weight: 67.00 Pounds
- Item Dimensions: 128.4 x 28.0 x 18.1 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 25811685
- Warranty: This genuine part is guaranteed by GM's factory warranty.
2018 GMC Sierra 6.2L Cat-Back Single Exit Exhaust Upgrade System with Polished Tip
Part Number: 23442231$985.88 MSRP: $1195.00You Save: $209.12 (18%)Product Specifications- Other Name: Muffler Assembly, Exh Rr (W/ Exh Pipe)
- Item Weight: 70.20 Pounds
- Item Dimensions: 60.7 x 21.6 x 15.3 inches
- Condition: New
- Fitment Type: Direct Replacement
- Product Grade: Performance Parts
- SKU: 23442231
- Warranty: This genuine part is guaranteed by GM's factory warranty.
2018 GMC Sierra 6.2L Cat-Back Single Exit Exhaust Upgrade System with Polished Tip
Part Number: 23442232$985.88 MSRP: $1195.00You Save: $209.12 (18%)Product Specifications- Other Name: Muffler Assembly, Exh Rr (W/ Exh Pipe)
- Item Weight: 67.40 Pounds
- Item Dimensions: 60.1 x 21.8 x 15.9 inches
- Condition: New
- Fitment Type: Direct Replacement
- Product Grade: Performance Parts
- SKU: 23442232
- Warranty: This genuine part is guaranteed by GM's factory warranty.
2018 GMC Sierra Muffler
Achieve unprecedented performance experience with our genuine 2018 GMC Sierra Muffler. All our parts are engineered for a perfect fit and maximum durability to ensure that your Sierra returns to factory condition. Specially designed for the 2018 GMC Sierra, this Muffler offers superior reliability and ease of installation for anyone.
We are your prime source for competitively priced and high-quality OEM 2018 GMC Sierra Muffler. We provide you with parts that will allow you to save a lot of money without sacrificing quality. All our OEM parts are backed by the manufacturer's warranty and shipped out at a swift rate.
Related 2018 GMC Sierra Parts
2018 GMC Sierra Fuse Box
2018 GMC Sierra Exhaust Hanger
2018 GMC Sierra Exhaust Heat Shield
2018 GMC Sierra Muffler Hanger Straps
2018 GMC Sierra Tail Pipe