Gates
Coolant Outlet

Gates CO34981 Engine Coolant Water Outlet

Brand Gates CO34981
Material Aluminum, steel
Outlet Outside Diameter .31
Outlet Outside Diameter .675
Bolt Hole Quantity 4
Type Thermostat housing
Gasket Quantity 0
Outlet Inside Diameter .19
Outlet Inside Diameter .55
9841 0
9848 No
By-Pass Holes No
Contents Thermostat housing
Number of Bolt Holes 4
Number of Gaskets 0
Number of Seals 0
OE Exact Yes
Outlet Inside Diameter 1 (in) .55
Outlet Inside Diameter 2 (in) .55
Outlet Inside Diameter 3 (in) .19
Outlet Inside Diameter 4 (in) .19
Outlet Outside Diameter 1 (in) .675
Outlet Outside Diameter 2 (in) .675
Outlet Outside Diameter 3 (in) .31
Outlet Outside Diameter 4 (in) .31
Type Thermostat housing
Product line Coolant Outlet
Fits Hyundai and Kia · 14 vehicles

OE exact replacement. Fits and performs like the original for straightforward service.

Aluminum and steel construction. Addresses common material issues found in other aftermarket options.

Thermostat housing assembly. Provides the coolant outlet solution you need in one part.

Cross-references 256203E200, 256203E201 and CH1027 for the same application. See all 3.

$191.31Free shipping
In stock · usually ships same day before 1pm CST
Step 1 — Confirm fitment
Free return shipping if it doesn't fit when you check fitment here first.
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
Step 2 — Quantity
Order total $191.31
Free shipping to the continental U.S.
Free returns within 60 days if it doesn't fit when fitment is verified.

OE-Style Coolant Outlet for Kia and Hyundai

The Gates Coolant Outlet CO34981 is an OE-exact thermostat housing assembly built for direct replacement on select Kia and Hyundai applications. It is designed to match original fit and function while addressing common material and manufacturing concerns found in many aftermarket alternatives.

Compatible with 2006-2010 Kia Optima, 2007-2011 Kia Rondo, and 2006-2009 Hyundai Santa Fe, this coolant outlet supports proper engine coolant routing at the thermostat housing. The Gates Coolant Outlet line focuses on accurate fitment, durable construction, and long service life for everyday cooling system repair.

Key Features

  • OE exact replacement for the original engine coolant water outlet
  • Thermostat housing design for direct cooling system service
  • Constructed from aluminum and steel for strength and corrosion resistance
  • Four-bolt housing configuration
  • Outlet dimensions include .55 in and .19 in inside diameters, with .675 in and .31 in outside diameters
  • Designed for select Kia Optima, Kia Rondo, and Hyundai Santa Fe applications
  • Part number CO34981 for catalog and fitment verification

Product Details

Gates Coolant Outlets are engineered as direct-fit replacements for the thermostat housing area, where accurate sealing and stable coolant flow are critical. This CO34981 thermostat housing is built to align with original equipment specifications and uses a metal construction that supports dependable operation in the cooling system. For buyers searching for a Kia Optima coolant outlet, Kia Rondo thermostat housing, or Hyundai Santa Fe engine coolant water outlet, this part provides a focused OE-style solution.

This part cross-references Hyundai/Kia OE numbers 256203E200 and 256203E201 for the same application.

Common Cooling System Issues It Can Address

  • Cracked or warped thermostat housing
  • Coolant leaks at the outlet or housing interface
  • Corrosion or material breakdown in the original outlet
  • Improper sealing from a worn OE housing
  • Cooling system service needs on the thermostat housing assembly

Installation Notes and Tips

Verify the vehicle year, make, and model before installation. This CO34981 uses a four-bolt thermostat housing layout and is intended for direct replacement on the listed Kia and Hyundai applications. Inspect the mating surfaces, coolant passages, and related hoses before reassembly, and confirm the replacement housing matches the original outlet dimensions and configuration.

Quality Assurance

Gates designs the Coolant Outlet line to fit and perform like the original component while providing a durable replacement for cooling system repair. The product line is built to address common aftermarket fit and material issues with an OE-style approach.

This part fits 14 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersFuel TypePositionNotes
2011KiaRondo2.7LV6GASN/AEngine Coolant Water Outlet - Thermostat Housing; Coolant Outlet
2010KiaOptima2.7LV6GASN/AEngine Coolant Water Outlet - Thermostat Housing; Coolant Outlet
2010KiaRondo2.7LV6GASN/AEngine Coolant Water Outlet - Thermostat Housing; Coolant Outlet
2009HyundaiSanta Fe2.7LV6GASN/AEngine Coolant Water Outlet - Thermostat Housing; Coolant Outlet
2009KiaOptima2.7LV6GASN/AEngine Coolant Water Outlet - Thermostat Housing; Coolant Outlet
2009KiaRondo2.7LV6GASN/AEngine Coolant Water Outlet - Thermostat Housing; Coolant Outlet
2008HyundaiSanta Fe2.7LV6GASN/AEngine Coolant Water Outlet - Thermostat Housing; Coolant Outlet
2008KiaOptima2.7LV6GASN/AEngine Coolant Water Outlet - Thermostat Housing; Coolant Outlet
2008KiaRondo2.7LV6GASN/AEngine Coolant Water Outlet - Thermostat Housing; Coolant Outlet
2007HyundaiSanta Fe2.7LV6GASN/AEngine Coolant Water Outlet - Thermostat Housing; Coolant Outlet
2007KiaOptima2.7LV6GASN/AEngine Coolant Water Outlet - Thermostat Housing; Coolant Outlet
2007KiaRondo2.7LV6GASN/AEngine Coolant Water Outlet - Thermostat Housing; Coolant Outlet
2006HyundaiSanta Fe2.7LV6GASN/AEngine Coolant Water Outlet - Thermostat Housing; Coolant Outlet
2006KiaOptima2.7LV6GASN/AEngine Coolant Water Outlet - Thermostat Housing; Coolant Outlet
Directly replaces or cross-references 3 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
256203E200256203E201CH1027