More Power in Every Purchase - Join the Summit Rewards Program Today!

Make/Model Search
Make/Engine Search

Brands
Savings Central
Contact Us
Help Center
1-800-230-3030

Call Us
My Garage
Wish List
Order Status & Returns

Welcome
My Account

Order Status

Wish List
Savings Central
Shop by Brand
Shop Your Passion
- Shop Your Passion
- Truck / SUV
  
  Jeep®
  
  Restoration
  
  Stock Replacement
  
  Late Model Muscle
  
  Tools
  
  Gifts, Clothing, & More
  
  Circle Track
  
  Street Rod
  
  Powersports
  
  Paint & Body
  
  Marine
  
  Jr Dragster
Gift Cards
My Garage
See Our Catalogs
News & Events
Career Opportunities
Contact Us
Help Center
1-800-230-3030 1-800-230-3030
New Products
Sign In

Search Make/Model

Search Make/Engine

Sign In

Welcome
Account Dashboard
Profile
Order Status & Returns
Buy It Again
Wish List
Rewards Program
Gift Cards & Summit Bucks
Address Book
My Garage Settings
Email Preferences
Text Notifications
My Reviews
My Questions
Catalogs
Tax Exemption
Sign In

More Power in Every Purchase - Join the Summit Rewards Program Today!

Stay Cool With SUMMER SALE Savings!

Filters

In Stock
- In Stock Items. Ships Today. (1)
Make/Model
Make/Engine
Water Neck Style
- Stock (1)
Swivel
- No (1)
Material
- Aluminum (1)
Color
- Natural (1)
Sealing Style
- Gasket (1)
Water Neck Inlet Size
- 1.950 in. (1)
Water Neck Outlet Size
- 1.820 in. (1)
Thermostat Included
- No (1)
Mounting Hardware Included
- No (1)
Heater Bypass Provision
- No (1)
Price Range
- $20-$50 (2)
- $50-$100 (5)
Filter Options
- Stock Replacement (4)
Savings Central
- Summit Bucks (6)
- Clearance (1)

Selected Filters

Filter Results by Vehicle

Loading...

Home
Water Necks and Thermostat Housings
Product Results

Thermostat Housing and Water Necks

Availability

- In Stock Items. Ships Today. (1)
Filters
Make/Model
Make/Engine
Water Neck Style
- Stock (1)
Swivel
- No (1)
Material
- Aluminum (1)
Color
- Natural (1)
Sealing Style
- Gasket (1)
Water Neck Inlet Size
- 1.950 in. (1)
Water Neck Outlet Size
- 1.820 in. (1)
Thermostat Included
- No (1)
Mounting Hardware Included
- No (1)
Heater Bypass Provision
- No (1)
Price Range
- $20-$50 (2)
- $50-$100 (5)
Filter Options
- Stock Replacement (4)
Savings Central
- Summit Bucks (6)
- Clearance (1)

Thermostat Housing and Water Necks

Thermostat housing, water neck, water outlet, coolant housing…they’re all names for the same thing. This component is where the upper radiator hose plugs...

Thermostat housing, water neck, water outlet, coolant housing…they’re all names for the same thing. This component is where the upper radiator hose plugs in, and it also contains your mechanical thermostat. Grab a stock replacement to replace a leaky or broken one, dress up your engine with a chrome or anodized finish, or use a 360° swiveling model for versatility on your custom cooling system.

Top Brands

Our powerful search tools make it easy to find the right water neck from manufacturers like Meziere, Dorman, Mr. Gasket, Four Seasons, Trans-Dapt, ACDelco, and so many more.

Thermostat housing, water neck, water outlet, coolant housing…they’re all names for the same thing. This component is where the upper radiator hose plugs in, and it also contains your mechanical thermostat. Grab a stock replacement to replace a leaky or broken one, dress up your engine with a chrome or anodized finish, or use a 360° swiveling model for versatility on your custom cooling system.

Top Brands

Our powerful search tools make it easy to find the right water neck from manufacturers like Meziere, Dorman, Mr. Gasket, Four Seasons, Trans-Dapt, ACDelco, and so many more.

Individual Parts

Part Groups

Results 1 - 6 of 6

ACDelco GM Genuine Parts Water Necks and Thermostat Housings 12645998

ACDelco GM Genuine Parts Water Necks and Thermostat Housings 12645998

ACDelco GM Genuine Parts Water Necks and Thermostat Housings 12645998

Water Neck and Thermostat Housing, Stock, Aluminum, Natural, Chevrolet, GMC, Each

Part Number: ADO-15-81954

Not Yet Reviewed

Estimated Ship Date: Tomorrow

...Loading

Estimated Ship Date: Tomorrow

ACDelco Water Necks and Thermostat Housings 12645997

ACDelco Water Necks and Thermostat Housings 12645997

ACDelco Water Necks and Thermostat Housings 12645997

HOUSING,ENG COOL THERM

Part Number: ADO-15-81953

Not Yet Reviewed

Estimated Ship Date: Sep 5, 2025 if ordered today

...Loading

Estimated Ship Date: Sep 5, 2025 if ordered today

ACDelco - Water Necks and Thermostat Housings for 2019-2020 CT6 - 12671038

ACDelco - Water Necks and Thermostat Housings for 2019-2020 CT6 - 12671038

ACDelco - Water Necks and Thermostat Housings for 2019-2020 CT6 - 12671038

HOUSING ASM-ENG COOL THERM

Part Number: ADO-15-81970

Not Yet Reviewed

Estimated Ship Date: Sep 5, 2025 if ordered today

...Loading

Estimated Ship Date: Sep 5, 2025 if ordered today

ACDelco - Water Necks and Thermostat Housings for 2019 VOLT - 12694088

ACDelco - Water Necks and Thermostat Housings for 2019 VOLT - 12694088

ACDelco - Water Necks and Thermostat Housings for 2019 VOLT - 12694088

HOUSING ASM-ENG COOL THERM

Part Number: ADO-15-81984

Not Yet Reviewed

Estimated Ship Date: Sep 5, 2025 if ordered today

...Loading

Estimated Ship Date: Sep 5, 2025 if ordered today

ACDelco - Water Necks and Thermostat Housings for 2018-2019 TRAVERSE - 12681133

ACDelco - Water Necks and Thermostat Housings for 2018-2019 TRAVERSE - 12681133

ACDelco - Water Necks and Thermostat Housings for 2018-2019 TRAVERSE - 12681133

HOUSING ASM-ENG COOL THERM

Part Number: ADO-15-81920

Not Yet Reviewed

Estimated Ship Date: Sep 8, 2025 if ordered today

...Loading

Estimated Ship Date: Sep 8, 2025 if ordered today

ACDelco Water Necks and Thermostat Housings 12681132

ACDelco Water Necks and Thermostat Housings 12681132

ACDelco Water Necks and Thermostat Housings 12681132

HOUSING ASM-ENG COOL THERM

Part Number: ADO-15-81939

Not Yet Reviewed

Estimated Ship Date: Sep 8, 2025 if ordered today

...Loading

Estimated Ship Date: Sep 8, 2025 if ordered today

1

Page 1 of 1

Modal Header

Contact us with questions.

Call To Order

This is a custom order part. You can order this part by Contacting Us.

Summit Racing Speedcard. Synchrony Car Care.

Summit Racing Equipment SpeedCard

Jumpstart Your Next Project!

View Details|See if you Prequalify

Stay Updated with Emails from Summit Racing

Never miss a sale on new parts, tools, and more!

= Required

First Name

Last Name

Email Address Email required

See Our Catalogs

News & Events

News & Events Home
OnAllCylinders (blog)
Calendar of Events
New Product Releases
Summit Racing News
News You Can Use
Featured Vehicles
Media Center
Sanctioning Bodies

Help

Help Center
Return Policy
Beat-A-Price Guarantee
Payment Options
Contact Us

Social

Facebook
X/Twitter
Instagram
Pinterest
YouTube
Podcast

About Summit

Corporate History
Retail Locations

My Account

Profile
Email Preferences
Order Status & Returns
Wish List
Address Book
My Reviews
My Questions
My Garage
Sign In

Career Opportunities

More

Summit Racing Credit Card
Gift Cards
Calculators & Tools
Promo Exclusions

Terms of Use | Privacy and Security | Site Accessibility
Copyright 2025 by AUTOSALES, INCORPORATED
dba Summit Racing Equipment | Trademarks

Let's Build it Together^™

Modal Header