How to replace the outlet radiator hose (LY7) on Buick LaCrosse?

The first task in radiator outlet pipe (LY7) replacement begins with draining the entire cooling system. The first step is to take off the air cleaner assembly. Separate the radiator outlet hose from connecting to the radiator outlet pipe. Next disconnect the radiator outlet pipe bracket bolts that mount to transmission retaining bolt and radiator outlet pipe bracket to Thermostat Housing retaining bolt. The radiator outlet pipe needs to be removed from the Thermostat Housing so install a fresh o-ring onto the radiator outlet pipe before removal. Extraction of the worn o-ring that resides on the radiator outlet pipe should be performed. Insert the new o-ring to the radiator outlet pipe before installing the pipe into the Thermostat Housing. Secure the bracket from the radiator outlet pipe using both transmission retaining bolt and Thermostat Housing retaining bolt. Reinstall the air cleaner assembly following your reconnection of the radiator outlet pipe to its outlet hose. Finally, fill the cooling system.

OEM Buick LaCrosse Radiator Hose

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25 Radiator Hoses found

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Buick LaCrosse Upper Hose
Part Number: 20877113
$18.82 MSRP: $28.00
You Save: $9.18 (33%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Hose-Radiator Inlet; Multi Purpose Hose; Radiator Hose; Cooling Hose; Hose, Radiator Inlet (Upper)
- Position: Upper
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2010-2011 Buick LaCrosse | CX, CXL | 4 Cyl 2.4 L GAS
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Buick LaCrosse Lower Hose
Part Number: 23203513
$35.44 MSRP: $68.18
You Save: $32.74 (49%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Hose, Radiator Outlet (Lower); Multi Purpose Hose; Radiator Hose; Cooling Hose
- Position: Lower
- Replaces: 20809012
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2010-2016 Buick LaCrosse | Base, Convenience, CX, CXL, CXS, Leather, Premium, Sport Touring, Touring | 4 Cyl 2.4 L GAS, 6 Cyl 3.0 L GAS, 6 Cyl 3.6 L FLEX, 6 Cyl 3.6 L GAS
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Buick LaCrosse Lower Hose
Part Number: 15835973
$26.82 MSRP: $41.96
You Save: $15.14 (37%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Hose, Radiator Outlet (Lower); Multi Purpose Hose; Radiator Hose; Cooling Hose
- Position: Lower
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2005-2009 Buick LaCrosse | CX, CXL | 6 Cyl 3.8 L GAS
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Buick LaCrosse Upper Hose
Part Number: 22992586
$59.73 MSRP: $88.88
You Save: $29.15 (33%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Hose-Radiator Inlet; Multi Purpose Hose; Radiator Hose; Cooling Hose; Hose, Radiator Inlet (Upper)
- Replaces: 20809011, 22962115, 23166803
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2010-2016 Buick LaCrosse | Base, Convenience, CX, CXL, CXS, Leather, Premium, Sport Touring, Touring | 4 Cyl 2.4 L GAS, 6 Cyl 3.0 L GAS, 6 Cyl 3.6 L FLEX, 6 Cyl 3.6 L GAS
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Buick LaCrosse Lower Hose
Part Number: 10341788
$19.64 MSRP: $35.08
You Save: $15.44 (45%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Hose, Radiator Outlet (Lower); Multi Purpose Hose; Radiator Hose; Cooling Hose
- Position: Lower
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2005-2006 Buick LaCrosse | CX, CXL | 6 Cyl 3.8 L GAS
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Buick LaCrosse Water Outlet
Part Number: 12706857
$38.20 MSRP: $56.86
You Save: $18.66 (33%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Pipe, Engine Coolant Pump; Water Inlet; Inlet Pipe
- Replaces: 12668441, 12677891
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2017-2019 Buick LaCrosse | Avenir, Base, Essence, Preferred, Premium, Sport Touring | 6 Cyl 3.6 L GAS
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Buick LaCrosse Reservoir Hose
Part Number: 20824599
$16.77 MSRP: $24.95
You Save: $8.18 (33%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Hose Assembly-Radiator Surge Tank Outlet; Coolant Reservoir Hose; Multi Purpose Hose
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2012-2013 Buick LaCrosse | Base, Convenience, Leather | 4 Cyl 2.4 L MILD HYBRID EV-GAS (MHEV)
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Buick LaCrosse Inlet Hose, Upper
Part Number: 20836301
$9.28 MSRP: $13.82
You Save: $4.54 (33%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Hose, Radiator Inlet (Upper); Radiator Hose
- Position: Upper
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2012-2016 Buick LaCrosse | Base, Convenience, Leather | 4 Cyl 2.4 L MILD HYBRID EV-GAS (MHEV)
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Buick LaCrosse Water Outlet
Part Number: 90537356
$73.88 MSRP: $109.95
You Save: $36.07 (33%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Pipe, Radiator Outlet (Lower); Radiator Hose; Outlet Pipe
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2011-2016 Buick LaCrosse | Base, Convenience, CX, CXL, Leather | 4 Cyl 2.4 L GAS, 4 Cyl 2.4 L MILD HYBRID EV-GAS (MHEV)
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Buick LaCrosse Lower Hose
Part Number: 26215482
$27.72 MSRP: $41.24
You Save: $13.52 (33%)
ADD TO CART
Product Specifications
- Other Name: Hose, Radiator Outlet (Lower); Multi Purpose Hose; Radiator Hose; Cooling Hose
- Position: Lower
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2017-2019 Buick LaCrosse | Avenir, Base, Essence, Preferred, Premium, Sport Touring | 6 Cyl 3.6 L GAS
View related parts
Buick LaCrosse Lower Hose
Part Number: 26223356
$26.64 MSRP: $39.65
You Save: $13.01 (33%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Hose, Radiator Outlet (Lower); Multi Purpose Hose; Radiator Hose; Cooling Hose
- Position: Lower
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2018-2019 Buick LaCrosse | Base, Essence, Preferred, Premium | 4 Cyl 2.5 L MILD HYBRID EV-GAS (MHEV)
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Buick LaCrosse Upper Hose
Part Number: 26215481
$35.65 MSRP: $53.05
You Save: $17.40 (33%)
ADD TO CART
Product Specifications
- Other Name: Hose-Radiator Inlet; Multi Purpose Hose; Radiator Hose; Cooling Hose; Hose, Radiator Inlet (Upper)
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2017-2019 Buick LaCrosse | Avenir, Base, Essence, Preferred, Premium, Sport Touring | 6 Cyl 3.6 L GAS
View related parts
Buick LaCrosse Upper Hose
Part Number: 22922980
$10.83 MSRP: $16.12
You Save: $5.29 (33%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Hose-Radiator Inlet; Multi Purpose Hose; Radiator Hose; Cooling Hose; Hose, Radiator Inlet (Upper)
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2013 Buick LaCrosse | Base, Leather | 4 Cyl 2.4 L MILD HYBRID EV-GAS (MHEV)
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Buick LaCrosse Upper Hose
Part Number: 22922981
$80.36 MSRP: $119.58
You Save: $39.22 (33%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Hose-Radiator Inlet; Multi Purpose Hose; Radiator Hose; Cooling Hose; Lower Hose; Hose, Radiator Inlet (Upper)
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2012-2016 Buick LaCrosse | Base, Convenience, Leather | 4 Cyl 2.4 L MILD HYBRID EV-GAS (MHEV)
View related parts
Buick LaCrosse Upper Hose
Part Number: 15835990
$36.50 MSRP: $54.32
You Save: $17.82 (33%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Hose-Radiator Inlet; Multi Purpose Hose; Radiator Hose; Cooling Hose; Hose, Radiator Inlet (Upper)
- Position: Upper
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2005-2009 Buick LaCrosse | CX, CXL | 6 Cyl 3.8 L GAS
View related parts
Buick LaCrosse Upper Hose
Part Number: 26220354
$57.24 MSRP: $85.18
You Save: $27.94 (33%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Hose-Radiator Inlet; Multi Purpose Hose; Radiator Hose; Cooling Hose; Hose, Radiator Inlet (Upper)
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2018-2019 Buick LaCrosse | Base, Essence, Preferred, Premium | 4 Cyl 2.5 L MILD HYBRID EV-GAS (MHEV)
View related parts
Buick LaCrosse Upper Hose
Part Number: 10332900
$20.00 MSRP: $35.73
You Save: $15.73 (45%)
Product Specifications
- Other Name: Hose, Radiator Inlet (Upper); Multi Purpose Hose; Radiator Hose; Cooling Hose
- Position: Upper
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2005-2006 Buick LaCrosse | CX, CXL | 6 Cyl 3.8 L GAS
View related parts
Buick LaCrosse Outlet Pipe, Lower
Part Number: 12587372
Product Specifications
- Other Name: Pipe, Radiator Outlet (Lower); Radiator Hose
- Position: Lower
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2005-2008 Buick LaCrosse | CXS | 6 Cyl 3.6 L GAS
View related parts
Buick LaCrosse Lower Hose, Upper
Part Number: 15298839
Product Specifications
- Other Name: Hose, Radiator Inlet (Upper); Multi Purpose Hose; Radiator Hose; Cooling Hose; Upper Hose
- Position: Upper
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2008-2009 Buick LaCrosse | Super | 8 Cyl 5.3 L GAS
View related parts
Buick LaCrosse Lower Hose
Part Number: 15286585
Product Specifications
- Other Name: Hose, Radiator Outlet (Lower); Multi Purpose Hose; Radiator Hose; Cooling Hose; Upper Hose
- Position: Lower
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2008-2009 Buick LaCrosse | Super | 8 Cyl 5.3 L GAS

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Buick LaCrosse Radiator Hose

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Buick LaCrosse Radiator Hose Parts Questions & Experts Answers

Upper Hose, Rear
10344422
Q: How to replace the outlet radiator hose (LY7) on Buick LaCrosse?
A: The first task in radiator outlet pipe (LY7) replacement begins with draining the entire cooling system. The first step is to take off the air cleaner assembly. Separate the radiator outlet hose from connecting to the radiator outlet pipe. Next disconnect the radiator outlet pipe bracket bolts that mount to transmission retaining bolt and radiator outlet pipe bracket to Thermostat Housing retaining bolt. The radiator outlet pipe needs to be removed from the Thermostat Housing so install a fresh o-ring onto the radiator outlet pipe before removal. Extraction of the worn o-ring that resides on the radiator outlet pipe should be performed. Insert the new o-ring to the radiator outlet pipe before installing the pipe into the Thermostat Housing. Secure the bracket from the radiator outlet pipe using both transmission retaining bolt and Thermostat Housing retaining bolt. Reinstall the air cleaner assembly following your reconnection of the radiator outlet pipe to its outlet hose. Finally, fill the cooling system.