HomeBelts and Cooling > Thermostat and HousingStant 48818 Engine Coolant Thermostat / Water Outlet Assembly
Part #: 48818

Stant 48818 Engine Coolant Thermostat / Water Outlet Assembly

Integrated Thermostat Housing
⚙️ 20 vehicles fit this part
🔍
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$64.00Free Shipping
🚚Free ShippingNo Cost to Continental U.S.
🔄Free Returns*Wrong fit? No cost
🛡️60-Day ReturnsMoney back guarantee
*Free return shipping only qualifies if our fitment verification tool is used.
🔥
✅ In Stock · Ready To Ship Most orders ship same-day if ordered before 1pm CST.
OE Direct Replacement — Bolt-on fit, no modifications needed
📦Integrated Thermostat Housing
🚗Fitment: Cadillac, CTS, SRX, and STS
🔄Easy Returns — Return within 60 days for a full refund
🚚Fast Shipping — Most orders ship same business day before 1pm CST

Overview of Stant Integrated Thermostat Housing 48818

The Stant Integrated Thermostat Housing 48818 is engineered for precise temperature regulation in Cadillac CTS, SRX, and STS models. Designed to maintain optimal engine coolant flow, this thermostat housing supports efficient engine performance and temperature control.

  • Bypass Plate Diameter: 1.37 inches
  • Flange Diameter with Seal: 1.76 inches
  • Flange Diameter without Seal: 3 inches
  • Height from Flange to Bottom: 1.37 inches
  • Thermostat Opening Temperature: 180 degrees Fahrenheit
  • Freight Class: 70

Details on the Integrated Thermostat Housing Product Line

The Stant Integrated Thermostat Housing line combines the thermostat and water outlet assembly into a single unit, simplifying installation and improving reliability. This design reduces potential leak points and ensures consistent coolant flow, which is critical for maintaining engine temperature in Cadillac CTS, SRX, and STS vehicles. The 48818 part number represents a precise fit and function within this product line.

Technical Description and Specifications

This engine coolant thermostat and water outlet assembly features a 1.37-inch bypass plate diameter, allowing controlled coolant circulation during engine warm-up. The flange diameters, 1.76 inches with seal and 3 inches without, provide secure mounting and sealing surfaces. The height from flange to bottom is 1.37 inches, ensuring proper alignment within the cooling system. The thermostat opens at 180 degrees Fahrenheit, a standard temperature for maintaining optimal engine operation in Cadillac CTS, SRX, and STS models.

Common Applications and Problem Resolution

  • Regulates engine temperature to prevent overheating
  • Ensures proper coolant flow during engine warm-up
  • Replaces faulty or leaking thermostat housings in Cadillac CTS, SRX, and STS
  • Helps maintain engine efficiency and emissions control
  • Prevents coolant leaks that can cause engine damage

Installation Notes and Tips

When installing the Stant 48818 thermostat housing, ensure the mating surfaces are clean and free of old gasket material. Verify the thermostat orientation matches the vehicle specifications for Cadillac CTS, SRX, and STS models. Use the correct torque specifications to avoid flange damage and ensure a proper seal. This integrated unit simplifies installation by combining the thermostat and water outlet assembly.

Quality Assurance and Warranty

Stant manufactures the Integrated Thermostat Housing 48818 to meet or exceed OEM standards for fit, form, and function. The part is designed for durability and reliable temperature regulation in Cadillac CTS, SRX, and STS vehicles. Warranty information is available from the manufacturer and should be consulted for specific coverage details.

BrandStant
Part Number48818
PositionIntegrated Thermostat Housing
Bypass Plate Diameter (in)1.37
Flange Diameter (With Seal) (in)1.76
Flange Diameter (Without Seal) (in)3
Freight Class70
Height from Flange to Bottom (in)1.37
Temperature (F)180 degrees

This part fits 20 vehicles. Search below:

YearMakeModelPositionNotes
2010CadillacCTSN/ATemperature 180 Degrees; Seal Included - Seal; Includes Housing; OE Temperature; Integrated Thermostat Housing
2009CadillacCTSN/ATemperature 180 Degrees; Seal Included - Seal; Includes Housing; OE Temperature; Integrated Thermostat Housing
2009CadillacSRXN/ATemperature 180 Degrees; Seal Included - Seal; OE Temperature; Integrated Thermostat Housing
2009CadillacSTSN/ATemperature 180 Degrees; Seal Included - Seal; Includes Housing; OE Temperature; Integrated Thermostat Housing
2008CadillacCTSN/ATemperature 180 Degrees; Seal Included - Seal; Includes Housing; OE Temperature; Integrated Thermostat Housing
2008CadillacSRXN/ATemperature 180 Degrees; Seal Included - Seal; OE Temperature; Integrated Thermostat Housing
2008CadillacSTSN/ATemperature 180 Degrees; Seal Included - Seal; Includes Housing; OE Temperature; Integrated Thermostat Housing
2007CadillacCTSN/ATemperature 180 Degrees; Seal Included - Seal; Includes Housing; OE Temperature; Integrated Thermostat Housing
2007CadillacSRXN/ATemperature 180 Degrees; Seal Included - Seal; OE Temperature; Integrated Thermostat Housing
2007CadillacSTSN/ATemperature 180 Degrees; Seal Included - Seal; Includes Housing; OE Temperature; Integrated Thermostat Housing
2006CadillacCTSN/ATemperature 180 Degrees; Seal Included - Seal; Includes Housing; OE Temperature; Integrated Thermostat Housing
2006CadillacCTSN/ATemperature 180 Degrees; Seal Included - Seal; OE Temperature; Integrated Thermostat Housing
2006CadillacSRXN/ATemperature 180 Degrees; Seal Included - Seal; OE Temperature; Integrated Thermostat Housing
2006CadillacSTSN/ATemperature 180 Degrees; Seal Included - Seal; Includes Housing; OE Temperature; Integrated Thermostat Housing
2005CadillacCTSN/ATemperature 180 Degrees; Seal Included - Seal; Includes Housing; OE Temperature; Integrated Thermostat Housing
2005CadillacCTSN/ATemperature 180 Degrees; Seal Included - Seal; OE Temperature; Integrated Thermostat Housing
2005CadillacSRXN/ATemperature 180 Degrees; Seal Included - Seal; OE Temperature; Integrated Thermostat Housing
2005CadillacSTSN/ATemperature 180 Degrees; Seal Included - Seal; OE Temperature; Integrated Thermostat Housing
2004CadillacCTSN/ATemperature 180 Degrees; Seal Included - Seal; OE Temperature; Integrated Thermostat Housing
2004CadillacSRXN/ATemperature 180 Degrees; Seal Included - Seal; OE Temperature; Integrated Thermostat Housing

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.