Genuine 2018 GMC Sierra Muffler

Exhaust Muffler

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19 Mufflers found

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2018 GMC Sierra 5.3L Cat-Back Single Exit Exhaust Upgrade System with Polished Tip
Part Number: 23442234
$985.88 MSRP: $1195.00
You Save: $209.12 (18%)
Ships in 1-3 Business Days
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Product 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.
More Info
Fits the following 2018 GMC Sierra Submodels:
- 1500 DOUBLE CAB STANDARD BOX | 8 Cyl 5.3L
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2018 GMC Sierra 5.3L Cat-Back Single Exit Exhaust Upgrade System with Polished Tip
Part Number: 23442233
$985.88 MSRP: $1195.00
You Save: $209.12 (18%)
Ships in 1-3 Business Days
ADD TO CART
Product 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.
More Info
Fits the following 2018 GMC Sierra Submodels:
- 1500 CREW CAB STANDARD BOX | 8 Cyl 5.3L
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2018 GMC Sierra Muffler Assembly, Exh (W/ Exh Pipe)
Part Number: 84665236
$669.59 MSRP: $1010.14
You Save: $340.55 (34%)
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Product 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.
More Info
Fits the following 2018 GMC Sierra Submodels:
- 1500 CREW CAB, 1500 DOUBLE CAB STANDARD BOX, CREW CAB 1/2 TON | 6 Cyl 4.3L, 8 Cyl 5.3L
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2018 GMC Sierra Muffler Assembly, Exhaust (W/ Exhaust Pipe)
Part Number: 84308119
$744.95 MSRP: $1123.82
You Save: $378.87 (34%)
Ships in 1-3 Business Days
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Product 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.
More Info
Fits the following 2018 GMC Sierra Submodels:
- 1500 CREW CAB STANDARD BOX | 8 Cyl 6.2L
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2018 GMC Sierra Exhaust Muffler Assembly (W/ Exhaust Pipe & Tail Pipe)
Part Number: 25811687
$884.06 MSRP: $1333.68
You Save: $449.62 (34%)
Ships in 1-3 Business Days
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Product 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.
More Info
Fits the following 2018 GMC Sierra Submodels:
- 3500 CREW CAB LONG BOX, CREW CAB 1 TON, CREW CAB 2500 LONG BOX, CREW CAB 8' BOX 3/4 TON | 8 Cyl 6.0L, 8 Cyl 6.0L Flex
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2018 GMC Sierra Muffler Assembly, Exh (W/ Exh Pipe)
Part Number: 84665240
$623.60 MSRP: $940.75
You Save: $317.15 (34%)
Ships in 1-3 Business Days
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Product Specifications
- Replaces: 84327966, 84053745
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 84665240
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following 2018 GMC Sierra Submodels:
- 1500 REGULAR CAB LONG BOX | 6 Cyl 4.3L, 8 Cyl 5.3L
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2018 GMC Sierra Muffler Assembly, Exh (W/ Exh Pipe)
Part Number: 84665237
$700.99 MSRP: $1057.51
You Save: $356.52 (34%)
Ships in 1-3 Business Days
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Product 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.
More Info
Fits the following 2018 GMC Sierra Submodels:
- 1500 CREW CAB STANDARD BOX | 6 Cyl 4.3L, 8 Cyl 5.3L
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2018 GMC Sierra Muffler Assembly, Exhaust (W/ Exhaust Pipe)
Part Number: 84308118
$358.22 MSRP: $537.97
You Save: $179.75 (34%)
Ships in 1-3 Business Days
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Product 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.
More Info
Fits the following 2018 GMC Sierra Submodels:
- 1500 DOUBLE CAB STANDARD BOX | 8 Cyl 6.2L
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2018 GMC Sierra Exhaust Muffler Assembly (W/ Exhaust Pipe & Tail Pipe)
Part Number: 25811686
$810.48 MSRP: $1222.69
You Save: $412.21 (34%)
Ships in 1-3 Business Days
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Product 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.
More Info
Fits the following 2018 GMC Sierra Submodels:
- 2500 REGULAR CAB, 3500 REGULAR CAB, REGULAR CAB 1 TON, REGULAR CAB 3/4 TON | 8 Cyl 6.0L, 8 Cyl 6.0L Flex
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2018 GMC Sierra Muffler Assembly, Exhaust (W/ Exhaust Pipe)
Part Number: 23211428
$370.38 MSRP: $556.24
You Save: $185.86 (34%)
Ships in 1-3 Business Days
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Product 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.
Fits the following 2018 GMC Sierra Submodels:
- 3500 REGULAR CAB | 8 Cyl 6.0L Flex
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2018 GMC Sierra Muffler Assembly, Exhaust (W/ Exhaust Pipe)
Part Number: 23211430
$379.59 MSRP: $570.06
You Save: $190.47 (34%)
Ships in 1-3 Business Days
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Product 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.
Fits the following 2018 GMC Sierra Submodels:
- 3500 CREW CAB ONLY | 8 Cyl 6.0L Flex
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2018 GMC Sierra Muffler Assembly, Exhaust (W/ Exhaust Pipe)
Part Number: 23211429
$411.38 MSRP: $617.81
You Save: $206.43 (34%)
Ships in 1-3 Business Days
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Product 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.
Fits the following 2018 GMC Sierra Submodels:
- 3500 REGULAR CAB | 8 Cyl 6.0L Flex
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2018 GMC Sierra Muffler Assembly, Exh (W/ Exh Pipe)
Part Number: 84665241
$635.94 MSRP: $959.38
You Save: $323.44 (34%)
Ships in 1-3 Business Days
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Product 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.
More Info
Fits the following 2018 GMC Sierra Submodels:
- 1500 REGULAR CAB STANDARD BOX | 6 Cyl 4.3L, 8 Cyl 5.3L
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2018 GMC Sierra Muffler Assembly, Exhaust (W/ Exhaust Pipe)
Part Number: 84308120
$810.48 MSRP: $1222.69
You Save: $412.21 (34%)
ADD TO CART
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.
More Info
Fits the following 2018 GMC Sierra Submodels:
- 1500 CREW CAB, CREW CAB 1/2 TON | 8 Cyl 6.2L
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2018 GMC Sierra Exhaust Muffler Assembly (W/ Exhaust Pipe & Tail Pipe)
Part Number: 25811688
$856.46 MSRP: $1292.06
You Save: $435.60 (34%)
Ships in 1-3 Business Days
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Product 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.
More Info
Fits the following 2018 GMC Sierra Submodels:
- 3500 DOUBLE CAB LONG BOX, DOUBLE CAB 2500 LONG BOX | 8 Cyl 6.0L, 8 Cyl 6.0L Flex
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2018 GMC Sierra Exhaust Muffler Assembly (W/ Exhaust Pipe & Tail Pipe)
Part Number: 25811684
$879.28 MSRP: $1326.48
You Save: $447.20 (34%)
Ships in 1-3 Business Days
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Product 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.
More Info
Fits the following 2018 GMC Sierra Submodels:
- DOUBLE CAB 2500 STANDARD BOX | 8 Cyl 6.0L, 8 Cyl 6.0L Flex
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2018 GMC Sierra Exhaust Muffler Assembly (W/ Exhaust Pipe & Tail Pipe)
Part Number: 25811685
$951.89 MSRP: $1436.02
You Save: $484.13 (34%)
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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.
More Info
Fits the following 2018 GMC Sierra Submodels:
- 1 TON CREW CAB, 2500 CREW CAB STANDARD BOX, 3500 CREW CAB STANDARD BOX, CREW CAB 1 TON 119.0, CREW CAB 6'6" BOX 3/4 TON | 8 Cyl 6.0L, 8 Cyl 6.0L Flex
View related parts
2018 GMC Sierra 6.2L Cat-Back Single Exit Exhaust Upgrade System with Polished Tip
Part Number: 23442231
$985.88 MSRP: $1195.00
You 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.
More Info
Fits the following 2018 GMC Sierra Submodels:
- 1500 CREW CAB STANDARD BOX | 8 Cyl 6.2L
View related parts
2018 GMC Sierra 6.2L Cat-Back Single Exit Exhaust Upgrade System with Polished Tip
Part Number: 23442232
$985.88 MSRP: $1195.00
You 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.
More Info
Fits the following 2018 GMC Sierra Submodels:
- 1500 CREW CAB, CREW CAB 1/2 TON | 8 Cyl 6.2L

Related 2018 GMC Sierra Parts

Alternate Year Models

2017 GMC Sierra Muffler 2019 GMC Sierra Muffler