HomeGates 33954 Engine Coolant Thermostat
Part #: 33954

Gates 33954 Engine Coolant Thermostat

OE Type Thermostat
23 vehicles fit this part
Select your vehicle to confirm fitment
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OE Direct Replacement — Bolt-on fit, no modifications needed
OE Type Thermostat
Fitment: Kia and Hyundai, Magentis, Optima, Sonata, and Santa Fe
Easy Returns — Return within 60 days for a full refund
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Overview of Gates OE Type Thermostat 33954

The Gates OE Type Thermostat 33954 is engineered for reliable engine temperature regulation in select Hyundai and Kia vehicles. Designed with durable materials and precise specifications, this engine coolant thermostat supports optimal cooling system performance for models like the Hyundai Sonata and Kia Optima.

  • Constructed from stainless steel, copper, steel, and brass for durability
  • Bottom by-pass design with jiggle pin weep hole for effective coolant flow
  • O-ring seal type ensuring a secure, leak-free fit
  • Start to open temperature at 180°F (82°C) for accurate engine temperature control
  • Sealing flange outside diameter approximately 2.1 inches for proper fitment
  • Compatible with Hyundai Magentis, Sonata, Santa Fe and Kia Optima models
  • OE performance rating matching original equipment standards

Detailed Product Description

The Gates OE Type Thermostat 33954 is designed to maintain precise engine operating temperatures by regulating coolant flow. Featuring a bottom by-pass design, it includes a jiggle pin weep hole that helps prevent air pockets in the cooling system, enhancing overall efficiency. The thermostat’s sealing flange outside diameter measures about 2.1 inches, with a flange thickness of 0.05 inches, ensuring a proper seal within the housing. Its O-ring seal type provides a reliable, leak-resistant connection without the need for additional gaskets. The thermostat opens at 180°F (82°C), which is critical for maintaining optimal engine temperature and preventing overheating or inefficient fuel consumption.

OE Type Thermostat Product Line

The Gates OE Type Thermostat line is designed to meet or exceed original equipment specifications, providing a direct replacement for factory-installed thermostats. This product line focuses on precise fitment and reliable performance, making it suitable for vehicles requiring exact temperature control components. The 33954 thermostat exemplifies this approach by combining quality materials and design features that align with OE standards for Hyundai and Kia vehicles.

Applications and Common Issues Addressed

  • Regulates engine temperature to prevent overheating
  • Prevents coolant leaks with O-ring seal design
  • Reduces risk of engine damage caused by faulty thermostat operation
  • Eliminates air pockets in cooling system via jiggle pin weep hole
  • Restores proper coolant flow in Hyundai Sonata, Kia Optima, and related models

Installation Notes and Tips

  • Compatible with Hyundai Magentis, Sonata, Santa Fe and Kia Optima vehicles
  • Installation tool is not included; use appropriate tools for thermostat housing removal
  • Ensure sealing surfaces are clean and free of debris before installation
  • Verify correct orientation of thermostat with jiggle pin positioned properly
  • Replace any worn or damaged seals to maintain leak-free operation

Quality Assurance and Warranty

The Gates OE Type Thermostat 33954 is manufactured to meet OE performance standards, ensuring reliable operation and durability. While specific warranty details are not provided, Gates products typically undergo rigorous quality control to maintain consistency and fitment accuracy for Hyundai and Kia vehicles.

BrandGates
Part Number33954
PositionOE Type Thermostat
.66
1
1
1.09
1.74
By-Pass Flange Diameter (in)1.12
DesignBottom By-Pass
DesignBottom By-Pass
Flange Thickness.05
Gasket Quantity0
Height2.42
Height2.43
Height Between Flanges1.7
Height Between Flanges1.79
Height from Flange (in).66
Includes Installation ToolNo
Installation Tool IncludedNo
Jiggle Pin Weep HoleYes
MaterialStainless Steel, Copper
MaterialSteel, Brass, Copper
Number of Gaskets0
Number of Jiggle Pins/Check Valves1
Number of Seals1
OE Comparison RatingOE Performance
Seal MaterialRubber
Seal TypeO-Ring
Sealing Flange Outside Diameter2.1
Sealing Flange Outside Diameter2.12
Start to Open Temperature82
Start to Open Temperature180
TypeOE Type Thermostat

This part fits 23 vehicles. Search below:

YearMakeModelLitersCylindersFuel TypePositionNotes
2006KiaMagentis2.4LL4GASN/A180 Degree; OE Temperature; Seal included; OE Type Thermostat
2006KiaOptima2.4LL4GASN/A180 Degree; OE Temperature; Seal included; OE Type Thermostat
2005HyundaiSonata2.4LL4GASN/A180 Degree; OE Temperature; Seal included; OE Type Thermostat
2005KiaMagentis2.4LL4GASN/A180 Degree; OE Temperature; Seal included; OE Type Thermostat
2005KiaOptima2.4LL4GASN/A180 Degree; OE Temperature; Seal included; OE Type Thermostat
2004HyundaiSanta Fe2.4LL4GASN/A180 Degree; OE Temperature; Seal included; OE Type Thermostat
2004HyundaiSonata2.4LL4GASN/A180 Degree; OE Temperature; Seal included; OE Type Thermostat
2004KiaMagentis2.4LL4GASN/A180 Degree; OE Temperature; Seal included; OE Type Thermostat
2004KiaOptima2.4LL4GASN/A180 Degree; OE Temperature; Seal included; OE Type Thermostat
2003HyundaiSanta Fe2.4LL4GASN/A180 Degree; OE Temperature; Seal included; OE Type Thermostat
2003HyundaiSonata2.4LL4GASN/A180 Degree; OE Temperature; Seal included; OE Type Thermostat
2003KiaMagentis2.4LL4GASN/A180 Degree; OE Temperature; Seal included; OE Type Thermostat
2003KiaOptima2.4LL4GASN/A180 Degree; OE Temperature; Seal included; OE Type Thermostat
2002HyundaiSanta Fe2.4LL4GASN/A180 Degree; OE Temperature; Seal included; OE Type Thermostat
2002HyundaiSonata2.4LL4GASN/A180 Degree; OE Temperature; Seal included; OE Type Thermostat
2002KiaMagentis2.4LL4GASN/A180 Degree; OE Temperature; Seal included; OE Type Thermostat
2002KiaOptima2.4LL4GASN/A180 Degree; OE Temperature; Seal included; OE Type Thermostat
2001HyundaiSanta Fe2.4LL4GASN/A180 Degree; OE Temperature; Seal included; OE Type Thermostat
2001HyundaiSonata2.4LL4GASN/A180 Degree; OE Temperature; Seal included; OE Type Thermostat
2001KiaMagentis2.4LL4GASN/A180 Degree; OE Temperature; Seal included; OE Type Thermostat
2001KiaOptima2.4LL4GASN/A180 Degree; OE Temperature; Seal included; OE Type Thermostat
2000HyundaiSonata2.4LL4GASN/A180 Degree; OE Temperature; Seal included; OE Type Thermostat
1999HyundaiSonata2.4LL4GASN/A180 Degree; OE Temperature; Seal included; OE Type Thermostat

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

This part directly replaces or is cross-referenced with the following part numbers:

148083215833954392180545-180

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.