Dorman 02251 Coolant Bypass Caps - EPDM 3/4in, 2 Pack

Dorman 02251 Coolant Bypass Caps - EPDM 3/4in, 2 Pack

Name: Dorman 02251 Coolant Bypass Caps - EPDM 3/4in, 2 Pack
Brand: Dorman
SKU: 403652
Price: 6.56 USD
Rating: 9.4 (424 reviews)

$ 6.56

Score By Feature

Based on 424 ratings

Giftable

9.45

Customer service

9.50

Value for money

9.09

Satisfaction

9.36

OveReview Final Score

How Our Score Is Calculated

Product Description

By entering your model number, you can make sure that this fits.

Heat-resistant vinyl is used to create this product.

To avoid vacuum leaks, it has a tight fit.

Capping lines and hoses while testing carburetors, emission control systems, vacuum lines, and more is a breeze with this tool.

Variety of sizes, assortments, and quantities are available for your convenience.

To ensure proper fit, enter your vehicle's make, model, and trim level into the garage tool.

Questions & Answers

Is this a 3/4" id or a 3/4" od pipe?

If the temperature is around 3/4,

Can I use these to shut off the water pump, or should I use a loop instead?

The water pump should be turned off, in my opinion. The water pump's main job is to force coolant through the radiator. UN- The required coolant flow in a loop would detract from the water pump's primary function's overall effectiveness. If you live in a hot climate, I strongly advise you to wear a hat. It's like trying to inflate a tire that has a hole in it. If it's necessary to get to your next destination, go ahead and do it. Knowing you've got a leak, on the other hand.

What would happen if you used diesel instead of gasoline?

There are no fuels that these can be used with.

Can I use these to shut off the water pump, or should I use a loop instead?

They're what I use to keep coolant in tubes while I'm servicing them. If a clamp is used, it will not hold under pressure. Without knowing any more, Loop appears to be the best option.

Selected User Reviews For Dorman 02251 Coolant Bypass Caps - EPDM 3/4in, 2 Pack

A close fit is required

5/5

I used it on a hot Ford 351w with multiple heater connections. I used the stock ones on the water pump, so I had to plug or cap the one on the radiator's water inlet. This saved me a lot of time because I tried ordering other water outlet/inlet caps but they didn't fit, but this one does. Because it's made of hard rubber, you'll have to work hard to get it to fit, but it does. It could be a little deeper for my purposes, but it still works.

Aviana Matthews

| Sep 12, 2021

Remove the heater core from a VW that is water cooled

5/5

It was a tight fit, but it worked perfectly to seal the heater core ports on the firewall engine bay side, and it was a great way to complete the heater core deletion. Used on a VW Beetle from the year 1985.

Bella Sweeney

| Apr 21, 2021

Great product, and it fits my 302 water pump perfectly

5/5

Laurel Bailey

| May 05, 2021

The situation is not ideal

3/5

The material is soft and not reinforced. The material was distorted and damaged as a result of clamping. I would not use these on pressurized coolant and would recommend them for some type of engine vacuum port blockoff.

Leonidas Stephens

| Mar 06, 2021

as stated in the description Radiator coolant pressures should not be able to burst through the thick wall

5/5

When I moved the hose to the water pump, I used it to plug the heater hose connection on the radiator. If you lubricate the ID with some antifreeze, installation should be simple.