-20AN Water-neck Adapters, No Welding-No Clamps required

Regular price $59.95 Sale

Choose size/Water Neck OD

Color

No Welding - No Clamps required. Easily go from one water-neck size to another without the need of reducers, splices or clamps while maintaining the same hose size. Perfect for LS swaps when the pump is one size and the radiator is another. Our adapters can be installed on any water-neck (Radiator, Water Pump, Thermostat Housing, etc. ) We guarantee our adapters to be leak proof and are warranted against mechanical failure. Our Adapters are both removable and reusable. Patented

To aid in determining the correct parts for your application and help ensure ordering the correct parts, use the -20an Templates found under Mock-up Templates at the top of this page.

Step 6: Placing your Order

IMPORTANT: Accurately measure the water necks OD ( Not the Bead ) for each water neck to be adapted. Use calipers or micrometer for the measurement. Water-neck OD Tolerance -010" +.015"

Order from the menu above. Select size and color. Choose Color. Add quantity of each in cart.

For ease in Adapter and Hose assembly we recommend our -20AN Wrenches .

Click Here to:

Continue Ordering Components Thermostat Housings

Amazing products

Great service as always very pleased with the product.I've used a lot of their products always pleased

Thank you for your kind words and continuous support! We are thrilled to hear that you are satisfied with our '-20AN Water-neck Adapters'. Your satisfaction is our top priority and we will continue to provide great products and service.

Thank you again for your review and adding the awsome photos! Fantastic!
Joe

Absolutely beautiful

I put this on my c3 to replace an aging oem one and it is the jewel of the engine. Easy install. Tool about 1 hr.

Thank you for your kind words and for choosing our -20AN Water-neck Adapter! We are so glad to hear that it was easy to install and that it has become the jewel of your engine. Thank you for your support and we hope it continues to serve you well. Thank you for posting photos of your build...very nice!!

Happy driving!
Joe

Extremely Satisfied

I knew I wanted the AutoPlumb system on my build when I started. The process was simple, and the results are phenomenal.

Thank you for your positive feedback! We are glad to hear that our -20AN Water-neck Adapters met your expectations and made the AutoPlumb system an easy choice for your build. We appreciate your support and hope you continue to enjoy the phenomenal results. Thank you for adding photos!! Great work!

Happy driving!

Joe

Doesn't get any better than this!

I was looking for a nice radiator hose setup for my Chevelle. I was hesitant at first and purchased a few other designs. I regret ever thinking anything else on the market even came close. This is by far the best hose kit ever made! Just follow the instructions and you will love the results.

Thank you for your kind words and for choosing our -20AN Water-neck Adapters! We are thrilled to hear that our product exceeded your expectations and that you found it to be the best hose kit ever made. We strive to provide high-quality and easy-to-use products for our customers. We appreciate your support and hope to continue serving you in the future.

Happy driving with your Chevelle and thank you for adding the photos!!
Joe

Amazing Experience - '69 Chevelle

Super happy with the results, from the ordering to final installation. Ordered the wrong color first, and the return was simple and headache free. Innovative design and sexy looks. Totally recommend for anyone's vehicle.

1 2 3

-20AN Water-neck Adapters, No Welding-No Clamps required

Customer Reviews