Gates
OE Type Thermostat

Gates 33808 Engine Coolant Thermostat

Brand Gates 33808
.8
1
1
1.37
By-Pass Flange Diameter (in) 1.37
Design Bottom By-Pass
Design Bottom By-Pass
Gasket Quantity 0
Height 3
Height Between Flanges 2.2
Height from Flange (in) .8
Includes Installation Tool No
Installation Tool Included No
Jiggle Pin Weep Hole Yes
Material Steel, Brass, Copper
Material Steel, Brass, Copper
Number of Gaskets 0
Number of Jiggle Pins/Check Valves 1
Number of Seals 1
OE Comparison Rating OE Performance
Seal Type O-Ring
Sealing Flange Outside Diameter 2.12
Start to Open Temperature 82
Start to Open Temperature 180
Type OE Type Thermostat
Product line OE Type Thermostat
Fits Buick, Cadillac, Pontiac, and Oldsmobile · 83 vehicles

OE Type Thermostat. Provides precise temperature control with OEM-equivalent fit.

Bottom by-pass design. Supports efficient coolant flow through the cooling system.

Steel, brass, copper. Durable metal construction with an O-ring seal for leak-free service.

Cross-references Carlson 14228, DENSO Auto Parts 4228 and FEL-PRO 35228 for the same application. See all 19.

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OE Type Thermostat for Precise Cooling Control

Gates OE Type Thermostat 33808 is an engine coolant thermostat built for accurate temperature regulation and a leak-resistant OEM-style fit. It is specified at 180 degrees and uses an O-ring seal with a jiggle pin weep hole for service-friendly cooling system operation.

Compatible With Buick Lucerne, Cadillac DTS, Cadillac STS, Cadillac SRX, Cadillac XLR, Cadillac DeVille, Cadillac Seville, Cadillac Eldorado, Cadillac Allante, Pontiac Bonneville, and Oldsmobile Aurora applications that call for an OE temperature 180-degree thermostat. Gates 33808 is also a direct cross-reference for FEL-PRO 35228 and Carlson 14228 applications.

Key Features

  • OE Type Thermostat with OE Performance comparison rating
  • 180 degree start-to-open temperature for factory-style engine warm-up control
  • Bottom by-pass design for listed applications
  • Steel, brass, and copper construction
  • O-ring seal type for leak-resistant installation
  • Jiggle pin weep hole included for air bleeding during service
  • No installation tool included

Product Details

This Gates OE Type Thermostat 33808 is engineered for drivers servicing cooling systems on vehicles such as the Cadillac DeVille, Cadillac Seville, and Buick Lucerne. The thermostat opens at 180 degrees to help maintain the engine’s operating temperature within the factory target range, supporting stable coolant flow through the radiator and engine passages. Its OE-style construction and sealing profile are selected to match the original application requirements for a proper fit and dependable seal.

Common Cooling System Issues It Can Address

  • Engine running too cool or taking too long to reach operating temperature
  • Temperature fluctuations during stop-and-go driving
  • Coolant seepage at the thermostat housing seal
  • Air trapped in the cooling system after service
  • Incorrect thermostat temperature for OE-spec replacement needs

Installation Notes and Tips

Verify the thermostat orientation, by-pass design, and 180-degree temperature specification before installation. Clean the housing mating surfaces thoroughly and inspect the O-ring sealing area for debris or corrosion. The jiggle pin weep hole should be positioned according to the vehicle service procedure to help purge trapped air during refill.

Quality Assurance

Gates designs OE Type Thermostats for precise temperature control and OEM-equivalent fit. The 33808 part number is built to meet OE-style expectations for cooling system service on supported Buick, Cadillac, Pontiac, and Oldsmobile applications.

This part fits 83 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersFuel TypePositionNotes
2011BuickLucerne4.6LV8GASN/A180 Degree; OE Temperature; Seal included; OE Type Thermostat
2011CadillacDTS4.6LV8GASN/A180 Degree; OE Temperature; Seal included; OE Type Thermostat
2010BuickLucerne4.6LV8GASN/A180 Degree; OE Temperature; Seal included; OE Type Thermostat
2010CadillacDTS4.6LV8GASN/A180 Degree; OE Temperature; Seal included; OE Type Thermostat
2010CadillacSTS4.6LV8GASN/A180 Degree; OE Temperature; Seal included; OE Type Thermostat
2009BuickLucerne4.6LV8GASN/A180 Degree; OE Temperature; Seal included; OE Type Thermostat
2009CadillacDTS4.6LV8GASN/A180 Degree; OE Temperature; Seal included; OE Type Thermostat
2009CadillacSRX4.6LV8GASN/A180 Degree; OE Temperature; Seal included; OE Type Thermostat
2009CadillacSTS4.4LV8GASN/A180 Degree; OE Temperature; Seal included; OE Type Thermostat
2009CadillacSTS4.6LV8GASN/A180 Degree; OE Temperature; Seal included; OE Type Thermostat
2009CadillacXLR4.4LV8GASN/A180 Degree; OE Temperature; Seal included; OE Type Thermostat
2009CadillacXLR4.6LV8GASN/A180 Degree; OE Temperature; Seal included; OE Type Thermostat
2008BuickLucerne4.6LV8GASN/A180 Degree; OE Temperature; Seal included; OE Type Thermostat
2008CadillacDTS4.6LV8GASN/A180 Degree; OE Temperature; Seal included; OE Type Thermostat
2008CadillacSRX4.6LV8GASN/A180 Degree; OE Temperature; Seal included; OE Type Thermostat
2008CadillacSTS4.4LV8GASN/A180 Degree; OE Temperature; Seal included; OE Type Thermostat
2008CadillacSTS4.6LV8GASN/A180 Degree; OE Temperature; Seal included; OE Type Thermostat
2008CadillacXLR4.4LV8GASN/A180 Degree; OE Temperature; Seal included; OE Type Thermostat
2008CadillacXLR4.6LV8GASN/A180 Degree; OE Temperature; Seal included; OE Type Thermostat
2007BuickLucerne4.6LV8GASN/A180 Degree; OE Temperature; Seal included; OE Type Thermostat
2007CadillacDTS4.6LV8GASN/A180 Degree; OE Temperature; Seal included; OE Type Thermostat
2007CadillacSRX4.6LV8GASN/A180 Degree; OE Temperature; Seal included; OE Type Thermostat
2007CadillacSTS4.4LV8GASN/A180 Degree; OE Temperature; Seal included; OE Type Thermostat
2007CadillacSTS4.6LV8GASN/A180 Degree; OE Temperature; Seal included; OE Type Thermostat
2007CadillacXLR4.4LV8GASN/A180 Degree; OE Temperature; Seal included; OE Type Thermostat
2007CadillacXLR4.6LV8GASN/A180 Degree; OE Temperature; Seal included; OE Type Thermostat
2006BuickLucerne4.6LV8GASN/A180 Degree; OE Temperature; Seal included; OE Type Thermostat
2006CadillacDTS4.6LV8GASN/A180 Degree; OE Temperature; Seal included; OE Type Thermostat
2006CadillacSRX4.6LV8GASN/A180 Degree; OE Temperature; Seal included; OE Type Thermostat
2006CadillacSTS4.4LV8GASN/A180 Degree; OE Temperature; Seal included; OE Type Thermostat
2006CadillacSTS4.6LV8GASN/A180 Degree; OE Temperature; Seal included; OE Type Thermostat
2006CadillacXLR4.4LV8GASN/A180 Degree; OE Temperature; Seal included; OE Type Thermostat
2006CadillacXLR4.6LV8GASN/A180 Degree; OE Temperature; Seal included; OE Type Thermostat
2005CadillacDeVille4.6LV8GASN/A180 Degree; OE Temperature; Seal included; OE Type Thermostat
2005CadillacSRX4.6LV8GASN/A180 Degree; OE Temperature; Seal included; OE Type Thermostat
2005CadillacSTS4.6LV8GASN/A180 Degree; OE Temperature; Seal included; OE Type Thermostat
2005CadillacXLR4.6LV8GASN/A180 Degree; OE Temperature; Seal included; OE Type Thermostat
2005PontiacBonneville4.6LV8GASN/A180 Degree; OE Temperature; Seal included; OE Type Thermostat
2004CadillacDeVille4.6LV8GASN/A180 Degree; OE Temperature; Seal included; OE Type Thermostat
2004CadillacSeville4.6LV8GASN/A180 Degree; OE Temperature; Seal included; OE Type Thermostat
2004CadillacSRX4.6LV8GASN/A180 Degree; OE Temperature; Seal included; OE Type Thermostat
2004CadillacXLR4.6LV8GASN/A180 Degree; OE Temperature; Seal included; OE Type Thermostat
2004PontiacBonneville4.6LV8GASN/A180 Degree; OE Temperature; Seal included; OE Type Thermostat
2003CadillacDeVille4.6LV8GASN/A180 Degree; OE Temperature; Seal included; OE Type Thermostat
2003CadillacSeville4.6LV8GASN/A180 Degree; OE Temperature; Seal included; OE Type Thermostat
2003OldsmobileAurora4.0LV8GASN/A180 Degree; OE Temperature; Seal included; OE Type Thermostat
2002CadillacDeVille4.6LV8GASN/A180 Degree; OE Temperature; Seal included; OE Type Thermostat
2002CadillacEldorado4.6LV8GASN/A180 Degree; OE Temperature; Seal included; OE Type Thermostat
2002CadillacSeville4.6LV8GASN/A180 Degree; OE Temperature; Seal included; OE Type Thermostat
2002OldsmobileAurora4.0LV8GASN/A180 Degree; OE Temperature; Seal included; OE Type Thermostat
2001CadillacDeVille4.6LV8GASN/A180 Degree; OE Temperature; Seal included; OE Type Thermostat
2001CadillacEldorado4.6LV8GASN/A180 Degree; OE Temperature; Seal included; OE Type Thermostat
2001CadillacSeville4.6LV8GASN/A180 Degree; OE Temperature; Seal included; OE Type Thermostat
2001OldsmobileAurora4.0LV8GASN/A180 Degree; OE Temperature; Seal included; OE Type Thermostat
2000CadillacDeVille4.6LV8GASN/A180 Degree; OE Temperature; Seal included; OE Type Thermostat
2000CadillacEldorado4.6LV8GASN/A180 Degree; OE Temperature; Seal included; OE Type Thermostat
2000CadillacSeville4.6LV8GASN/A180 Degree; OE Temperature; Seal included; OE Type Thermostat
1999CadillacDeVille4.6LV8GASN/A180 Degree; OE Temperature; Seal included; OE Type Thermostat
1999CadillacEldorado4.6LV8GASN/A180 Degree; OE Temperature; Seal included; OE Type Thermostat
1999CadillacSeville4.6LV8GASN/A180 Degree; OE Temperature; Seal included; OE Type Thermostat
1999OldsmobileAurora4.0LV8GASN/A180 Degree; OE Temperature; Seal included; OE Type Thermostat
1998CadillacDeVille4.6LV8GASN/A180 Degree; OE Temperature; Seal included; OE Type Thermostat
1998CadillacEldorado4.6LV8GASN/A180 Degree; OE Temperature; Seal included; OE Type Thermostat
1998CadillacSeville4.6LV8GASN/A180 Degree; OE Temperature; Seal included; OE Type Thermostat
1998OldsmobileAurora4.0LV8GASN/A180 Degree; OE Temperature; Seal included; OE Type Thermostat
1997CadillacDeVille4.6LV8GASN/A180 Degree; OE Temperature; Seal included; OE Type Thermostat
1997CadillacEldorado4.6LV8GASN/A180 Degree; OE Temperature; Seal included; OE Type Thermostat
1997CadillacSeville4.6LV8GASN/A180 Degree; OE Temperature; Seal included; OE Type Thermostat
1997OldsmobileAurora4.0LV8GASN/A180 Degree; OE Temperature; Seal included; OE Type Thermostat
1996CadillacDeVille4.6LV8GASN/A180 Degree; OE Temperature; Seal included; OE Type Thermostat
1996CadillacEldorado4.6LV8GASN/A180 Degree; OE Temperature; Seal included; OE Type Thermostat
1996CadillacSeville4.6LV8GASN/A180 Degree; OE Temperature; Seal included; OE Type Thermostat
1996OldsmobileAurora4.0LV8GASN/A180 Degree; OE Temperature; Seal included; OE Type Thermostat
1995CadillacDeVille4.6LV8GASN/A180 Degree; OE Temperature; Seal included; OE Type Thermostat
1995CadillacEldorado4.6LV8GASN/A180 Degree; OE Temperature; Seal included; OE Type Thermostat
1995CadillacSeville4.6LV8GASN/A180 Degree; OE Temperature; Seal included; OE Type Thermostat
1995OldsmobileAurora4.0LV8GASN/A180 Degree; OE Temperature; Seal included; OE Type Thermostat
1994CadillacDeVille4.6LV8GASN/A180 Degree; OE Temperature; Seal included; OE Type Thermostat
1994CadillacEldorado4.6LV8GASN/A180 Degree; OE Temperature; Seal included; OE Type Thermostat
1994CadillacSeville4.6LV8GASN/A180 Degree; OE Temperature; Seal included; OE Type Thermostat
1993CadillacAllante4.6LV8GASN/A180 Degree; OE Temperature; Seal included; OE Type Thermostat
1993CadillacEldorado4.6LV8GASN/A180 Degree; OE Temperature; Seal included; OE Type Thermostat
1993CadillacSeville4.6LV8GASN/A180 Degree; OE Temperature; Seal included; OE Type Thermostat
Directly replaces or cross-references 19 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Carlson — 14228DENSO Auto Parts — 4228FEL-PRO — 35228Gates — 33808Motorad — 339-180Motorad — 7339-18012TH11D131-66131-86131-12813532838462283531407353915412554784125558111255980712600023