Genuine 2021 GMC Sierra Muffler

Exhaust Muffler

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31 Mufflers found

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2021 GMC Sierra 5.3L Short Wheel Base Cat-Back Dual Exit Exhaust Upgrade System
Part Number: 84173604
$1366.05 MSRP: $2395.00
You Save: $1028.95 (43%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Muffler Assembly, Exh Rr (W/ Exh Pipe) *Install 1.00
- Replaced by: 84964739
- Item Weight: 62.80 Pounds
- Item Dimensions: 27.4 x 27.6 x 17.2 inches
- Condition: New
- Fitment Type: Direct Replacement
- Product Grade: Performance Parts
- SKU: 84173604
- Warranty: This genuine part is guaranteed by GM's factory warranty.
More Info
Fits the following 2021 GMC Sierra Submodels:
- CREW CAB 5'8" 1/2 TON, CREW CAB 5'8" BOX 1/2 TON, EXTENDED CAB 6'6" BOX 1/2 TON | 8 Cyl 5.3L
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2021 GMC Sierra 5.3L Short Wheel Base Cat-Back Single Exit Exhaust Upgrade System with Chevrolet Bowtie Logo
Part Number: 84173601
$1233.38 MSRP: $1495.00
You Save: $261.62 (18%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Muffler Assembly, Exh Rr (W/ Exh Pipe) *Install 0.50
- Replaced by: 84964738
- Item Weight: 52.20 Pounds
- Item Dimensions: 27.4 x 27.8 x 16.9 inches
- Condition: New
- Fitment Type: Direct Replacement
- Product Grade: Performance Parts
- SKU: 84173601
- Warranty: This genuine part is guaranteed by GM's factory warranty.
More Info
Fits the following 2021 GMC Sierra Submodels:
- CREW CAB 5'8" 1/2 TON, CREW CAB 5'8" BOX 1/2 TON, EXTENDED CAB 6'6" BOX 1/2 TON | 8 Cyl 5.3L, 8 Cyl 6.2L
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2021 GMC Sierra 5.3L Long Wheel Base Cat-Back Single Exit Exhaust Upgrade System with Chevrolet Bowtie Logo
Part Number: 84173594
$1233.38 MSRP: $1495.00
You Save: $261.62 (18%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Muffler Assembly, Exh Rr (W/ Exh Pipe) *Install 0.50
- Replaced by: 84964737
- Item Weight: 57.40 Pounds
- Item Dimensions: 27.7 x 27.3 x 16.9 inches
- Condition: New
- Fitment Type: Direct Replacement
- Product Grade: Performance Parts
- SKU: 84173594
- Warranty: This genuine part is guaranteed by GM's factory warranty.
More Info
Fits the following 2021 GMC Sierra Submodels:
- CREW CAB 6'6" BOX 1/2 TON | 8 Cyl 5.3L, 8 Cyl 6.2L
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2021 GMC Sierra 5.3L Short Wheel Base Cat-Back Single Exit Exhaust Upgrade System with GMC Logo
Part Number: 84173608
$1233.38 MSRP: $1495.00
You Save: $261.62 (18%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Muffler Assembly, Exh Rr (W/ Exh Pipe) *Install 0.50
- Replaced by: 84964742
- Item Weight: 59.40 Pounds
- Item Dimensions: 27.1 x 27.6 x 17.4 inches
- Condition: New
- Fitment Type: Direct Replacement
- Product Grade: Performance Parts
- SKU: 84173608
- Warranty: This genuine part is guaranteed by GM's factory warranty.
More Info
Fits the following 2021 GMC Sierra Submodels:
- CREW CAB 5'8" 1/2 TON, CREW CAB 5'8" BOX 1/2 TON, EXTENDED CAB 6'6" BOX 1/2 TON | 8 Cyl 5.3L
View related parts
2021 GMC Sierra 5.3L Long Wheel Base Cat-Back Dual Exit Exhaust Upgrade System
Part Number: 84173605
$1975.88 MSRP: $2395.00
You Save: $419.12 (18%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Muffler Assembly, Exh Rr (W/ Exh Pipe) *Install 1.00
- Replaced by: 84964740
- Item Weight: 65.30 Pounds
- Item Dimensions: 28.2 x 27.6 x 16.7 inches
- Condition: New
- Fitment Type: Direct Replacement
- Product Grade: Performance Parts
- SKU: 84173605
- Warranty: This genuine part is guaranteed by GM's factory warranty.
More Info
Fits the following 2021 GMC Sierra Submodels:
- CREW CAB 6'6" BOX 1/2 TON | 8 Cyl 5.3L
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2021 GMC Sierra Muffler Assembly, Exh (W/ Exh Pipe)
Part Number: 84797265
$991.19 MSRP: $1495.30
You Save: $504.11 (34%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Muffler, Muffler & Pipe
- Replaced by: 85653999
- Replaces: 84397008, 84717871
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 84797265
- Warranty: This genuine part is guaranteed by GM's factory warranty.
More Info
Fits the following 2021 GMC Sierra Submodels:
- CREW CAB 5'8" BOX 1/2 TON, EXTENDED CAB 6'6" BOX 1/2 TON | 8 Cyl 6.2L
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2021 GMC Sierra Muffler Assembly, Exh (W/ Exh Pipe)
Part Number: 84657793
$614.58 MSRP: $927.15
You Save: $312.57 (34%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Muffler, Muffler & Pipe
- Replaced by: 85652524
- Replaces: 23241274
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 84657793
- Warranty: This genuine part is guaranteed by GM's factory warranty.
More Info
Fits the following 2021 GMC Sierra Submodels:
- CREW CAB 5'8" 1/2 TON, CREW CAB 5'8" BOX 1/2 TON, EXTENDED CAB 6'6" BOX 1/2 TON | 6 Cyl 4.3L, 8 Cyl 5.3L, 8 Cyl5.3L
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2021 GMC Sierra Muffler Assembly, Exh (W/ Exh Pipe)
Part Number: 84520061
$288.13 MSRP: $432.72
You Save: $144.59 (34%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Muffler & Pipe
- Item Weight: 55.60 Pounds
- Item Dimensions: 140.4 x 27.8 x 21.2 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 84520061
- Warranty: This genuine part is guaranteed by GM's factory warranty.
More Info
Fits the following 2021 GMC Sierra Submodels:
- CREW CAB 5'8" 1/2 TON, CREW CAB 5'8" BOX 1/2 TON, EXTENDED CAB 6'6" BOX 1/2 TON | 6 Cyl 4.3L, 8 Cyl 5.3L, 8 Cyl5.3L
View related parts
2021 GMC Sierra 6.2L Short Wheelbase Cat-Back Dual Exit Exhaust Upgrade System
Part Number: 84964744
$1975.88 MSRP: $2395.00
You Save: $419.12 (18%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Muffler Assembly, Exh Rr (W/ Exh Pipe) *Install 1.00
- Replaces: 84527234, 84173613
- Condition: New
- Fitment Type: Direct Replacement
- Product Grade: Performance Parts
- SKU: 84964744
- Warranty: This genuine part is guaranteed by GM's factory warranty.
More Info
Fits the following 2021 GMC Sierra Submodels:
- CREW CAB 5'8" 1/2 TON, CREW CAB 5'8" BOX 1/2 TON, EXTENDED CAB 6'6" BOX 1/2 TON | 8 Cyl 6.2L
View related parts
2021 GMC Sierra Muffler Assembly, Exh (W/ Exh Pipe)
Part Number: 84657796
$755.92 MSRP: $1140.38
You Save: $384.46 (34%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Muffler, Muffler & Pipe
- Replaced by: 85652528
- Replaces: 84397006
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 84657796
- Warranty: This genuine part is guaranteed by GM's factory warranty.
More Info
Fits the following 2021 GMC Sierra Submodels:
- CREW CAB 5'8" 1/2 TON, CREW CAB 5'8" BOX 1/2 TON, EXTENDED CAB 6'6" BOX 1/2 TON | 8 Cyl 5.3L, 8 Cyl5.3L
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2021 GMC Sierra Muffler Assembly, Exh (W/ Exh Pipe)
Part Number: 84021296
$490.11 MSRP: $739.38
You Save: $249.27 (34%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Muffler, Muffler & Pipe
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 84021296
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following 2021 GMC Sierra Submodels:
- EXTENDED CAB 8' BOX 1 TON, EXTENDED CAB 8' BOX 3/4 TON | 8 Cyl 6.6L
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2021 GMC Sierra Muffler Assembly, Exh (W/ Exh Pipe)
Part Number: 84657794
$575.24 MSRP: $867.81
You Save: $292.57 (34%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Muffler, Muffler & Pipe
- Replaced by: 85652527
- Replaces: 23241275
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 84657794
- Warranty: This genuine part is guaranteed by GM's factory warranty.
More Info
Fits the following 2021 GMC Sierra Submodels:
- CREW CAB 6'6" BOX 1/2 TON | 6 Cyl 4.3L, 8 Cyl 5.3L, 8 Cyl5.3L
View related parts
2021 GMC Sierra Muffler Assembly, Exh (W/ Exh Pipe)
Part Number: 84657797
$758.70 MSRP: $1144.58
You Save: $385.88 (34%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Muffler, Muffler & Pipe
- Replaced by: 85652529
- Replaces: 84397007
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 84657797
- Warranty: This genuine part is guaranteed by GM's factory warranty.
More Info
Fits the following 2021 GMC Sierra Submodels:
- CREW CAB 6'6" BOX 1/2 TON | 8 Cyl 5.3L, 8 Cyl5.3L
View related parts
2021 GMC Sierra Muffler Assembly, Exh (W/ Exh Pipe)
Part Number: 84657792
$780.78 MSRP: $1177.89
You Save: $397.11 (34%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Muffler, Muffler & Pipe
- Replaced by: 85652523
- Replaces: 23241272
- Item Weight: 35.70 Pounds
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 84657792
- Warranty: This genuine part is guaranteed by GM's factory warranty.
More Info
Fits the following 2021 GMC Sierra Submodels:
- REGULAR CAB 8' BOX 1/2 TON | 6 Cyl 4.3L, 8 Cyl5.3L
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2021 GMC Sierra Muffler Assembly, Exh (W/ Exh Pipe)
Part Number: 84797264
$750.30 MSRP: $1131.89
You Save: $381.59 (34%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Muffler, Muffler & Pipe
- Replaced by: 85653998
- Replaces: 84717870
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 84797264
- Warranty: This genuine part is guaranteed by GM's factory warranty.
More Info
Fits the following 2021 GMC Sierra Submodels:
- CREW CAB 6'6" BOX 1/2 TON | 8 Cyl 6.2L
View related parts
2021 GMC Sierra Muffler Assembly, Exh (W/ Exh Pipe)
Part Number: 23241280
$686.57 MSRP: $1035.76
You Save: $349.19 (34%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Muffler, Muffler & Pipe
- Replaced by: 86533471
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 23241280
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following 2021 GMC Sierra Submodels:
- CREW CAB 5'8" 1/2 TON, CREW CAB 5'8" BOX 1/2 TON, EXTENDED CAB 6'6" BOX 1/2 TON | 4 Cyl 2.7L
View related parts
2021 GMC Sierra Muffler Assembly, Exh (W/ Exh Pipe)
Part Number: 84520060
$744.87 MSRP: $1123.71
You Save: $378.84 (34%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Muffler & Pipe
- Replaced by: 85652520
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 84520060
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following 2021 GMC Sierra Submodels:
- CREW CAB 5'8" 1/2 TON, CREW CAB 5'8" BOX 1/2 TON, EXTENDED CAB 6'6" BOX 1/2 TON | 8 Cyl 5.3L, 8 Cyl5.3L
View related parts
2021 GMC Sierra Muffler Assembly, Exh (W/ Exh Pipe)
Part Number: 84559497
$228.86 MSRP: $343.70
You Save: $114.84 (34%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 84559497
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following 2021 GMC Sierra Submodels:
- CREW CAB 1 TON CHASSIS 137.0, EXTENDED CREW CAB 1 TON CHASSIS 161.5 | 8 Cyl 6.6L
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2021 GMC Sierra Muffler Assembly, Exh (W/ Exh Pipe)
Part Number: 84021298
$279.09 MSRP: $419.13
You Save: $140.04 (34%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 84021298
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following 2021 GMC Sierra Submodels:
- REGULAR CAB 1 TON CHASSIS 137.0 | 8 Cyl 6.6L
View related parts
2021 GMC Sierra Muffler Assembly, Exh (W/ Exh Pipe)
Part Number: 84021299
$396.16 MSRP: $594.95
You Save: $198.79 (34%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 84021299
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following 2021 GMC Sierra Submodels:
- REGULAR CAB 1 TON CHASSIS 161.5 | 8 Cyl 6.6L

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2020 GMC Sierra Muffler