Coolant Reservoir for 2025 Cadillac CT4
No.
Part # / Description / Price
Price
1
Radiator Surge Tank 
GM
GM Description: 2.0L turbo. 2.7L turbo. 3.0L twin-turbo, main radiator. CT4. CT5. Helps maintain optimal engine operating temperatures
Designed to contain excess or an expansion of coolant
When needed, helps circulate more coolant into the coolant system
This GM Genuine part is designed, engineered and tested to rigorous standards, and are backed by General Motors
MSRP $40.08
$26.25
MSRP $40.08
$26.25
2
Multi-Purpose Insulator GM
GM Notes: PARTS: Part included with reservoir tank.
Description: This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
MSRP $8.21
$5.37
MSRP $8.21
$5.37
3
Radiator Surge Tank Bracket GM
GM Description: 2.0L turbo. 2.7L turbo. Helps align and secure your vehicle's engine coolant reservoir
This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
Collision parts are designed to help promote proper and safe repair
MSRP $13.38
$8.75
MSRP $13.38
$8.75
4
Radiator Surge Tank Clip GM
GM Notes: PARTS: Part included with reservoir tank.
Description: 2.7L turbo. Can be used in various automotive applications
Helps secure components to help prevent damage
MSRP $6.51
$4.26
MSRP $6.51
$4.26
6
Radiator Surge Tank Overflow Hose GM
GM Notes: PARTS: Part included with reservoir tank.
Description: 2.0L turbo. 2.7L turbo. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
MSRP $8.52
$5.57
MSRP $8.52
$5.57
7
MSRP $71.29
$38.90
8
MSRP $63.13
$34.46
9
Heater Inlet and Outlet Pipe GM
GM Description: This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
Original equipment parts are designed to work with your GM vehicle safety systems -- aftermarket replacement parts may not meet the same OE safety regulations, depending on the part type
MSRP $114.98
$62.79
MSRP $114.98
$62.79
10
Engine Coolant Outlet O-Ring GM
GM Notes: PARTS: Part included with water pipe.
Description: Lower Thermostat Housing to Heater Outlet Pipe. Engine Cooling. Reservoir Outlet Pipe. Wagon, 3.0, 3.6L. 2.8L. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
Original equipment parts are designed to work with your GM vehicle safety systems -- aftermarket replacement parts may not meet the same OE safety regulations, depending on the part type
MSRP $10.12
$5.52
MSRP $10.12
$5.52
11
Heater Outlet Pipe Gasket GM
GM Notes: PARTS: Part included with water pipe.
Description: Lower Thermostat Housing to Heater Outlet Pipe. Engine Cooling. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
Original equipment parts are designed to work with your GM vehicle safety systems -- aftermarket replacement parts may not meet the same OE safety regulations, depending on the part type
MSRP $12.22
$6.66
MSRP $12.22
$6.66
12
M6x1x25 Multi-Purpose Bolt GM
GM Notes: PARTS: Part included with water pipe.
Description: This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
MSRP $11.38
$7.07
MSRP $11.38
$7.07
14
Multi-Purpose Clamp GM
GM Description: 2019, 14x12 wide. 2020, 14x12 wide. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
MSRP $4.12
$2.55
MSRP $4.12
$2.55
15
Multi-Purpose Clip GM
GM Notes: PARTS: Part included with inlet hose.
Description: Helps secure components
Wide variety of applications
This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
MSRP $8.21
$5.37
MSRP $8.21
$5.37
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Part # / Description / Price
Price
Multi-Purpose Bolt Retainer GM
GM Description: Double & crew cab. 4.3, 5.3, 6.2L. Regular cab. 1.3l turbo, cvt. 3.6L. 4.2L twin-turbo. 2019. 2020. 2.4L 2012-13. With zr1. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
MSRP $7.36
$4.57
MSRP $7.36
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Multi-Purpose Nut GM
GM Description: #2. Bumper support. Under hood. 3.6L. 2020. Helps align and secure various components
This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
MSRP $11.95
$7.85
MSRP $11.95
$7.85
Auxiliary Radiator Outlet Pipe Clip GM
GM Notes: PARTS: Part included with inlet hose.
Description: Helps fasten and secure components
Ability to be used in multiple applications
This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
MSRP $7.53
$4.93
MSRP $7.53
$4.93
M6x1x30 Multi-Purpose Bolt GM
GM Description: This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors
MSRP $10.43
$6.49
MSRP $10.43
$6.49