How to service and repair the Coolant Pipe on Cadillac STS?

In order to service and repair the surge tank hose/pipe, first drain the cooling system partially. Use the hose clamp pliers (J38185), disengage the clamp at the surge tank and leave the surge tank inlet hose. Repeat this process for the clamp at the Radiator, then disconnect the surge tank inlet hose from the retaining features of the Fan Shroud and the air cleaner assembly. Once more, make use of the hose clamp pliers (J38185), and remove the clamp at the water housing assembly and disconnect the surge tank inlet hose off the vehicle and remove totally. At installation, attach the surge tank inlet hose first, hose clamp to the water housing assembly using hose clamp pliers (J38185). This hose can be inserted into the retaining features at the Fan Shroud and the air cleaner housing assembly, and secured at the Radiator and at the surge tank using the hose clamp pliers (J38185). Finally, fill the cooling system.

How to Replace a Coolant Pipe in the Coolant Bypass System (LH2) on Cadillac STS?

Drain the cooling system first in order to replace the coolant bypass hose (LH2). Then, take off the air cleaner outlet duct. Push together the clamp and disconnect it from the heater outlet hose to reach the bypass hose at the Thermostat Housing. Then, tighten the clamps (1, 3) and take off the bypass hose from the water outlet housing and the front cover. For installation, pinch the clamps (1,3) to secure the bypass hose to the water outlet housing and the front cover. Take back the output hose of the heater and join it back to the Thermostat Housing by using the clamp to compress it in place. Subsequently, replace the air cleaner outlet duct and fill the cooling system.

OEM Cadillac STS Coolant Pipe

Engine Cooler Pipe

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15 Coolant Pipes found

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Cadillac STS Inlet Hose Part Number: 25800336
$92.69 MSRP: $137.92
You Save: $45.23 (33%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Hose, Engine Coolant Recovery; Radiator Hose
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2008-2011 Cadillac STS | Base, Platinum | 6 Cyl 3.6 L GAS
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Cadillac STS By-Pass Hose Part Number: 12566109
$27.73 MSRP: $41.27
You Save: $13.54 (33%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Hose, Engine Coolant By-Pass; Hose, Engine Coolant By - Pass
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2005-2010 Cadillac STS | Base, Platinum | 8 Cyl 4.6 L GAS
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Cadillac STS Inlet Hose Part Number: 88958088
Product Specifications
- Other Name: Hose Assembly, Radiator Surge Tank Inlet; Radiator Hose; Hose, Engine Coolant Recovery
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2005-2007 Cadillac STS | Base | 6 Cyl 3.6 L GAS
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Cadillac STS Inlet Hose Part Number: 88956903
Product Specifications
- Other Name: Hose Assembly, Radiator Surge Tank Inlet; Radiator Hose; Hose, Engine Coolant Recovery
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2005-2007 Cadillac STS | Base | 8 Cyl 4.6 L GAS
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Cadillac STS Inlet Hose Part Number: 19129775
Product Specifications
- Other Name: Hose, Radiator Surge Tank Inlet; Radiator Hose; Hose, Engine Coolant Recovery
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2006-2009 Cadillac STS | V | 8 Cyl 4.4 L GAS
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Cadillac STS Upper Hose Part Number: 89023434
Product Specifications
- Other Name: Hose, Radiator Inlet; Multi Purpose Hose; Radiator Hose; Cooling Hose; Hose, Radiator Inlet (Upper)
- Position: Upper
- Replaces: 25974695
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2005-2010 Cadillac STS | Base, Platinum | 8 Cyl 4.6 L GAS
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Cadillac STS Inlet Hose Part Number: 19129998
Product Specifications
- Other Name: Hose, Radiator Surge Tank Inlet; Radiator Hose; Hose, Engine Coolant Recovery
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2008-2010 Cadillac STS | Base, Platinum | 8 Cyl 4.6 L GAS
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Cadillac STS Inlet Tube Part Number: 19129768
Product Specifications
- Other Name: Pipe Assembly, Engine Oil Cooler Inlet; Pipe, Engine Oil Cooler
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2006-2009 Cadillac STS | V | 8 Cyl 4.4 L GAS
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Cadillac STS Overflow Hose Part Number: 88956890
$28.62 MSRP: $42.58
You Save: $13.96 (33%)
Product Specifications
- Other Name: Hose, Engine Coolant Recovery; Coolant Reservoir Hose; Multi Purpose Hose; Radiator Hose; Outlet Pipe; Outlet Hose
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2005-2010 Cadillac STS | Base, Platinum, V | 8 Cyl 4.4 L GAS, 8 Cyl 4.6 L GAS
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Cadillac STS Water Outlet Part Number: 88956900
Product Specifications
- Other Name: Hose Assembly, Radiator Surge Tank Engine; Radiator Hose; Outlet Hose; Hose, Engine Coolant Recovery
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2005-2007 Cadillac STS | Base | 6 Cyl 3.6 L GAS
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Cadillac STS Overflow Hose Part Number: 25800335
Product Specifications
- Other Name: Hose-Radiator Surge Tank Engine; Coolant Reservoir Hose; Multi Purpose Hose; Radiator Hose; Outlet Hose
- Replaced by: 25942705
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2008-2011 Cadillac STS | Base, Platinum | 6 Cyl 3.6 L GAS
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Cadillac STS Outlet Hose Part Number: 88958083
Product Specifications
- Other Name: Hose, Engine Coolant By-Pass; Radiator Hose; Water Pump Tube; Hose, Engine Coolant By - Pass
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2005-2007 Cadillac STS | Base | 8 Cyl 4.6 L GAS
View related parts
Cadillac STS Upper Hose Part Number: 25974696
Product Specifications
- Other Name: Hose, Radiator Inlet (Upper); Multi Purpose Hose; Radiator Hose; Cooling Hose
- Position: Upper
- Replaces: 88957426, 89023438
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2005-2010 Cadillac STS | Base, Platinum | 8 Cyl 4.6 L GAS
View related parts
Cadillac STS Overflow Hose Part Number: 25757865
Product Specifications
- Other Name: Hose, Radiator Surge Tank Overflow; Coolant Reservoir Hose; Multi Purpose Hose; Radiator Hose; Hose, Engine Coolant Recovery
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2005-2010 Cadillac STS | Base, Platinum, V | 6 Cyl 3.6 L GAS, 8 Cyl 4.4 L GAS, 8 Cyl 4.6 L GAS
View related parts
Cadillac STS By-Pass Hose Part Number: 12608315
Product Specifications
- Other Name: Hose, Engine Coolant By-Pass; Hose, Engine Coolant By - Pass
- Replaces: 12582234
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2006-2009 Cadillac STS | V | 8 Cyl 4.4 L GAS

Cadillac STS Coolant Pipe

Want to cut long-term maintenance and repair costs? Choose OEM Coolant Pipe. Those parts deliver top durability you can trust. On our site, you'll find a huge catalog of genuine Cadillac STS parts. Prices are unbeatable, so you can keep more in your pocket. Every OEM Cadillac STS Coolant Pipe includes a manufacturer's warranty. You can also get an easy return policy that keeps buying risk free. Fast delivery, get your car on the road quickly. It's simple to search, compare, and order. Stop guessing about quality or fit. Order today and save with parts that last.

For the Cadillac STS's engine cooling system the Cadillac STS Coolant Pipe acts as an important functional part that is both dependable and performance-oriented. Both metal and plastic variants of the rigid Coolant Pipe depending on the model year transport coolant to prevent engine overheating and ensure better performance and safety for the Cadillac STS. This Coolant Pipe demonstrates model compatibility that enables it to fulfill individual vehicle demands across all Cadillac vehicles therefore making it an important Cadillac system component. Checking the Coolant Pipe for leaks dominates importance for older STS models because unrestricted fluid flow can permanently harm the vehicle engine. A failing Coolant Pipe shows itself through coolant leakage alongside engine temperature elevation thus harming brand STS performance. The Coolant Pipe replacement costs between $20 to $250 based on what necessary components need replacement. The automotive market recognizes the car Coolant Pipe because of its durable design attributes together with its fundamental position in safeguarding engine well-being. The car part stands as proof of the automaker's dedication to quality through its blend of durability and efficiency which keeps the model at the front of luxury sedan popularity.

Cadillac STS Coolant Pipe Parts and Q&A

By-Pass Hose
12566109
Q: How to service and repair the Coolant Pipe on Cadillac STS?
A:
In order to service and repair the surge tank hose/pipe, first drain the cooling system partially. Use the hose clamp pliers (J38185), disengage the clamp at the surge tank and leave the surge tank inlet hose. Repeat this process for the clamp at the Radiator, then disconnect the surge tank inlet hose from the retaining features of the Fan Shroud and the air cleaner assembly. Once more, make use of the hose clamp pliers (J38185), and remove the clamp at the water housing assembly and disconnect the surge tank inlet hose off the vehicle and remove totally. At installation, attach the surge tank inlet hose first, hose clamp to the water housing assembly using hose clamp pliers (J38185). This hose can be inserted into the retaining features at the Fan Shroud and the air cleaner housing assembly, and secured at the Radiator and at the surge tank using the hose clamp pliers (J38185). Finally, fill the cooling system.
Overflow Hose
88956890
Q: How to Replace a Coolant Pipe in the Coolant Bypass System (LH2) on Cadillac STS?
A:
Drain the cooling system first in order to replace the coolant bypass hose (LH2). Then, take off the air cleaner outlet duct. Push together the clamp and disconnect it from the heater outlet hose to reach the bypass hose at the Thermostat Housing. Then, tighten the clamps (1, 3) and take off the bypass hose from the water outlet housing and the front cover. For installation, pinch the clamps (1,3) to secure the bypass hose to the water outlet housing and the front cover. Take back the output hose of the heater and join it back to the Thermostat Housing by using the clamp to compress it in place. Subsequently, replace the air cleaner outlet duct and fill the cooling system.