OEM 2021 GMC Sierra 3500 HD Cooling Hose

Cooling System Hose

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19 Cooling Hoses found

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2021 GMC Sierra 3500 HD PIPE-W/PMP OTLT
Part Number: 12725092
$34.48 MSRP: $61.58
You Save: $27.10 (45%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Cooler Pipe, Outlet Pipe
- Replaces: 12636733, 97188664, 97328878
- Condition: New
- SKU: 12725092
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following 2021 GMC Sierra 3500 HD Submodels:
- AT4, Base, Denali, Denali Ultimate, Pro, SLE, SLT | 8 Cyl 6.6 L DIESEL
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2021 GMC Sierra 3500 HD Outlet Assembly, Wat
Part Number: 12706111
$49.86 MSRP: $89.04
You Save: $39.18 (44%)
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Product Specifications
- Other Name: Water Outlet
- Replaces: 12706152
- Condition: New
- SKU: 12706111
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following 2021 GMC Sierra 3500 HD Submodels:
- AT4, Base, Denali, Denali Ultimate, Pro, SLE, SLT | 8 Cyl 6.6 L DIESEL
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2021 GMC Sierra 3500 HD Hose Assembly, Aux W/Pmp Inl
Part Number: 84888351
$52.70 MSRP: $82.56
You Save: $29.86 (37%)
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Product Specifications
- Other Name: Reservoir Hose
- Replaced by: 85119174
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 84888351
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following 2021 GMC Sierra 3500 HD Submodels:
- AT4, Base, Denali, Denali Ultimate, Pro, SLE, SLT | 8 Cyl 6.6 L DIESEL
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2021 GMC Sierra 3500 HD PIPE ASM-TRANS FLUID CLR
Part Number: 85525392
$69.48 MSRP: $108.84
You Save: $39.36 (37%)
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Product Specifications
- Other Name: Inlet Pipe
- Replaced by: 85630660
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 85525392
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following 2021 GMC Sierra 3500 HD Submodels:
- AT4, Base, Denali, Pro, SLE, SLT | 8 Cyl 6.6 L FLEX, 8 Cyl 6.6 L GAS
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2021 GMC Sierra 3500 HD Hose Assembly, Chrg Air Clr Otlt Air
Part Number: 84914123
$123.01 MSRP: $193.54
You Save: $70.53 (37%)
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Product Specifications
- Other Name: Air Outlet Duct, Intercooler Hose
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 84914123
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following 2021 GMC Sierra 3500 HD Submodels:
- AT4, Base, Denali, Denali Ultimate, Pro, SLE, SLT | 8 Cyl 6.6 L DIESEL
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2021 GMC Sierra 3500 HD Hose Assembly, Chrg Air Clr Inl Air
Part Number: 84870726
$210.91 MSRP: $331.84
You Save: $120.93 (37%)
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Product Specifications
- Other Name: Air Inlet Duct, Intercooler Hose
- Replaces: 84660608
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 84870726
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following 2021 GMC Sierra 3500 HD Submodels:
- AT4, Base, Denali, Denali Ultimate, Pro, SLE, SLT | 8 Cyl 6.6 L DIESEL
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2021 GMC Sierra 3500 HD HOSE-RAD OTLT
Part Number: 85119159
$23.28 MSRP: $34.65
You Save: $11.37 (33%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Lower Hose
- Replaces: 84645089
- Condition: New
- SKU: 85119159
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following 2021 GMC Sierra 3500 HD Submodels:
- AT4, Base, Denali, Pro, SLE, SLT | 8 Cyl 6.6 L FLEX, 8 Cyl 6.6 L GAS
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2021 GMC Sierra 3500 HD HOSE-ENG COOL AIR BL
Part Number: 85119162
$29.21 MSRP: $43.47
You Save: $14.26 (33%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Vent Hose
- Replaced by: 85056532
- Replaces: 84645095
- Condition: New
- SKU: 85119162
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following 2021 GMC Sierra 3500 HD Submodels:
- AT4, Base, Denali, Denali Ultimate, Pro, SLE, SLT | 8 Cyl 6.6 L DIESEL
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2021 GMC Sierra 3500 HD HOSE-ENG COOL AIR BL
Part Number: 85511928
$40.64 MSRP: $60.48
You Save: $19.84 (33%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Vent Hose
- Replaced by: 85584377
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 85511928
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following 2021 GMC Sierra 3500 HD Submodels:
- AT4, Base, Denali, Pro, SLE, SLT | 8 Cyl 6.6 L FLEX, 8 Cyl 6.6 L GAS
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2021 GMC Sierra 3500 HD HOSE-RAD SURGE TK INL
Part Number: 85119167
$47.31 MSRP: $70.40
You Save: $23.09 (33%)
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Product Specifications
- Other Name: Inlet Hose
- Replaced by: 85584378
- Condition: New
- SKU: 85119167
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following 2021 GMC Sierra 3500 HD Submodels:
- AT4, Base, Denali, Pro, SLE, SLT | 8 Cyl 6.6 L FLEX, 8 Cyl 6.6 L GAS
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2021 GMC Sierra 3500 HD HOSE-RAD SURGE TK INL
Part Number: 85584374
$47.38 MSRP: $70.51
You Save: $23.13 (33%)
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Product Specifications
- Other Name: Inlet Hose
- Replaced by: 85056534
- Replaces: 84645087, 85119172
- Condition: New
- SKU: 85584374
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following 2021 GMC Sierra 3500 HD Submodels:
- AT4, Base, Denali, Denali Ultimate, Pro, SLE, SLT | 8 Cyl 6.6 L DIESEL
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2021 GMC Sierra 3500 HD HOSE-RAD INL
Part Number: 85122989
$51.36 MSRP: $76.44
You Save: $25.08 (33%)
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Product Specifications
- Other Name: Upper Hose
- Replaces: 84813629, 84645090
- Condition: New
- SKU: 85122989
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following 2021 GMC Sierra 3500 HD Submodels:
- AT4, Base, Denali, Denali Ultimate, Pro, SLE, SLT | 8 Cyl 6.6 L DIESEL
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2021 GMC Sierra 3500 HD HOSE-RAD INL
Part Number: 85119166
$58.25 MSRP: $86.69
You Save: $28.44 (33%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Upper Hose
- Condition: New
- SKU: 85119166
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following 2021 GMC Sierra 3500 HD Submodels:
- AT4, Base, Denali, Pro, SLE, SLT | 8 Cyl 6.6 L FLEX, 8 Cyl 6.6 L GAS
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2021 GMC Sierra 3500 HD HOSE ASM-AUX RAD INL
Part Number: 85119160
$81.58 MSRP: $121.41
You Save: $39.83 (33%)
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Product Specifications
- Other Name: Hose, Inlet Hose
- Replaces: 84689391, 84888352
- Condition: New
- SKU: 85119160
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following 2021 GMC Sierra 3500 HD Submodels:
- AT4, Base, Denali, Denali Ultimate, Pro, SLE, SLT | 8 Cyl 6.6 L DIESEL
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2021 GMC Sierra 3500 HD HOSE ASM-RAD SURGE TK OTLT
Part Number: 85119168
$83.29 MSRP: $123.95
You Save: $40.66 (33%)
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Product Specifications
- Other Name: Outlet Hose
- Replaces: 23504710
- Condition: New
- SKU: 85119168
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following 2021 GMC Sierra 3500 HD Submodels:
- AT4, Base, Denali, Denali Ultimate, Pro, SLE, SLT | 8 Cyl 6.6 L DIESEL
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2021 GMC Sierra 3500 HD HOSE ASM-RAD OTLT
Part Number: 85119169
$109.94 MSRP: $163.61
You Save: $53.67 (33%)
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Product Specifications
- Other Name: Lower Hose
- Replaced by: 85056546
- Replaces: 84645096
- Condition: New
- SKU: 85119169
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following 2021 GMC Sierra 3500 HD Submodels:
- AT4, Base, Denali, Denali Ultimate, Pro, SLE, SLT | 8 Cyl 6.6 L DIESEL
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2021 GMC Sierra 3500 HD HOSE ASM-AUX RAD OTLT
Part Number: 85119158
$120.10 MSRP: $179.53
You Save: $59.43 (34%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Hose, Outlet Hose
- Replaces: 84689390, 84689392, 84829445
- Condition: New
- SKU: 85119158
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following 2021 GMC Sierra 3500 HD Submodels:
- AT4, Base, Denali, Denali Ultimate, Pro, SLE, SLT | 8 Cyl 6.6 L DIESEL
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2021 GMC Sierra 3500 HD Turbo Coolant Feed Hose Clamp
Part Number: 11549085
$4.59 MSRP: $7.19
You Save: $2.60 (37%)
Product Specifications
- Other Name: Clamp,Turbo Coolant Feed Hose; Lower Hose Clamp, Vent Hose Clamp, Vent Tube Clamp
- Item Weight: 0.40 Pounds
- Item Dimensions: 2.0 x 1.5 x 1.1 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 11549085
- Warranty: This genuine part is guaranteed by GM's factory warranty.
More Info
Fits the following 2021 GMC Sierra 3500 HD Submodels:
- AT4, Base, Denali, Denali Ultimate, Pro, SLE, SLT | 8 Cyl 6.6 L DIESEL
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2021 GMC Sierra 3500 HD PIPE ASM-THERM BYPASS
Part Number: 12724548
$40.72 MSRP: $72.72
You Save: $32.00 (44%)
Product Specifications
- Other Name: By-Pass Pipe
- Replaced by: 12737234
- Condition: New
- SKU: 12724548
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following 2021 GMC Sierra 3500 HD Submodels:
- AT4, Base, Denali, Denali Ultimate, Pro, SLE, SLT | 8 Cyl 6.6 L DIESEL

2021 GMC Sierra 3500 HD Cooling Hose

Achieve unprecedented performance experience with our genuine 2021 GMC Sierra 3500 HD Cooling Hose. All our parts are engineered for a perfect fit and maximum durability to ensure that your Sierra 3500 HD returns to factory condition. Specially designed for the 2021 GMC Sierra 3500 HD, this Cooling Hose offers superior reliability and ease of installation for anyone.

With a comprehensive array of OEM 2021 GMC Sierra 3500 HD Cooling Hose, from fuel pumps to door handles, our website is a one-stop-shop for your needs. All our genuine 2021 GMC Sierra 3500 HD Cooling Hose are backed by the manufacturer's warranty and are offered at competitive prices in the market. Rest assured, you can shop with complete confidence.

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Alternate Year Models

2020 GMC Sierra 3500 HD Cooling Hose 2022 GMC Sierra 3500 HD Cooling Hose