NNK 37MM (1.456") Coolant Freeze Expansion Plug

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  • NNK 37MM (1.456

  • NNK 37MM (1.456

  • NNK 37MM (1.456

  • NNK 37MM (1.456

  • Copper Water Engine Expansion Plug Freeze Plug

  • Copper Water Engine Expansion Plug Freeze Plug

  • Copper Water Engine Expansion Plug Freeze Plug

  • NNK 37MM (1.456

NNK 37MM (1.456") Coolant Freeze Expansion Plug

NNK Coolant Freeze Expansion Plug 37MM (1.456") STAINLESS STEEL CUP FREEZE PLUG;
37MM (1.456") Engine Cup Frozen Expansion Plug Stainless Steel/Brass/Iron Alloy 555-093.1 NOK-CN Factory Outlet Customized.
37MM (1.456") Engine Freeze Plug Stainless Steel Cup Engine Cup Stainless Steel, Iron, Brass Antifreeze Plug Copper Wate.



Product Description

Product Type

NNK 37MM (1.456") Coolant Freeze Expansion Plug 

OEM Any size NNK Water plug/freeze plug

NNK 37MM (1.456") Coolant Freeze Expansion Plug

Freeze plugs not only help prevent cracks in the internal engine, but they also reduce the chance of coolant starting to leak. It is a very troublesome problem that the engine block is frozen. If there are leaks and overflows, the problem will be even more serious. Therefore, the effect of freezing plug cannot be ignored. So you need a good freezer plug.

Freeze plugs are small, cylindrical-shaped plugs that are used to fill the passages in an engine created by the sand cores. During production, passages are created in engines that allows for the removal of casting sand. To fill these passages -- and therefore protect against coolant leaks -- automakers use freeze plugs.

In the past, plain water was used to cool combustion engines. While effecting at removing heat, plain water is susceptible to freezing. When the water coolant inside a vehicle's engine froze, its freeze plugs would push out. Automobiles today no longer use plain water as coolant. They use a combination of water and antifreeze. Nonetheless, you should still use caution to protect your engine's freeze plugs from failure.

When your freezer plug is rusted or has other problems and can no longer be used, please replace the NNK freezer plug accessories in time. Prevent engine block loss.


You could drive with a freeze plug leak if you are left with no choice. In theory, if you can maintain the engine coolant level of your car and ensure that the car's engine doesn't get too hot, you might be able to drive with a freeze plug leak, though you shouldn't do so.

Copper Water Engine Expansion Plug Freeze Plug

So for your safety, how to install the water plug?

It takes four people to remove and install the transmission. The motor should be frozen for five hours and then one hour of labor should be added to each freeze plug on the back of the motor. It may take you about six hours to complete the project, plus parts and fluids.

It is possible to get freeze plugs without removing suspension components or pulling the engine completely (btw, any engine overhaul should include replacing the freeze plugs – they are only a dollar or two)…

How Hard Is It To Change A Freeze Plug?

There are some complications involved with installing freeze plugs. Some freeze plugs are easy to reach, but others are difficult to reach with the engine running. When a freeze plug fails to pop, the water in the block expands, causing this problem.

Copper Water Engine Expansion Plug Freeze Plug

If you want replace freeze plugs without removing the engine.

You'll need a screwdriver with a flat tip, and a set of pliers. You should also use a flat-tip screwdriver to drive the plug into the hole. Then, you need to use a set of lock pliers and a socket wrench to push it in the engine. You can replace a freeze plug by dismantling your engine.

Check out all the Oil Seal available on NNK Web.To learn more about Freeze Plug, please visit your local professional auto repair shop.


52mm Stainless Steel copper Dish type core / Freeze plug/engine cap

Some smaller water plug holes are processing channels during machining, and are blocked with water after processing; some larger water plug holes are designed to protect the body or cylinder head, and the engine that is filled with water in winter forgets to release water. After the water freezes, the water plug will be swelled out first, so as to protect the body or cylinder head to a certain extent. Without antifreeze, the water pumped through the cooling system may freeze and may cause damage to the engine block A bigger problem arises. Fortunately, you can prevent engine block ruptures with high-quality antifreeze plugs. When it's time to replace cryoplugs, you can find reliable cryoplug kits at NNK.

40mm(1.57") NNK Brass Engine Expansion Plug EPC-212-B Brass Freeze Plug

Product details :

Material:brass, stainless steel, iron

Mounting Location: Freeze plugs may be located on the side, back, or underside of the engine block.

Packing : plastic bag

Copper Water Engine Expansion Plug Freeze Plug


Our NNK has rich experience in the research and production of freezing plugs. We have their own matching freezing plugs according to your model and structure to ensure the quality. Protect your engine block.

freeze plug Common models
10MM 24MM 36MM
12MM 25MM 38MM
13MM 26MM 39MM
14MM 28MM 40MM
16MM 29MM 42MM
18MM 30MM 45MM
19MM 31MM 50MM
20MM 32MM 55MM
21MM 33MM 58MM
22MM 34MM 56MM
23MM 35MM 60MM


Approaching NOK-CN factory

1、Fatory Staff

Fatory staff of more than 150 people

2、Own Production

Our own production of oil seal skeleton

3、Quality Teating

Quality through quality teating

4、Fast Delivery

Fast delivery, reliable quality

5、Floor Area

Area: 13320m2 Comple industrial chain

6、Packing line

Integrated Process of strength factory

52mm Stainless Steel copper Dish type core / Freeze plug/engine cap

core plug,freeze plug tool,frost plug,welch plugs,engine freeze plug,freeze plug installation tool,freeze plug installation,engine core plugs,brass freeze plugs


Q1.What are the advantages of your company?

A: NNK is a brand belong to NOK-CN factory.We have Impressive Professional Technology,Experienced Technical Staffs, Strict Inspection Procedures,High Quality and Afforable Prices On-Time Delivery,Problems identification & Solutions offers. Seal Design

Proposal offers. Seals Tests for Endurance and Performance,PPAP Level IIl Submission. Strick Process Control,International Standard Criterias.

Q2. What is your terms of payment?

A: T/T 30% as deposit, and 70% before delivery. We'll show you the photos of the products and packages before you pay the balance.

Q3. What is your terms of delivery?


Q4. How about your delivery time?

A: Existing molds: 30 days, depending on ordering quantity.

New Molds: 60 days, depending on ordering quantity.

Samples Submission: 21-28 days with existing toolings.

Q5. Can you produce according to the samples?

A: Yes, we can produce by your samples or technical drawings. We can build the molds and fixtures.

Q6. Do you test all your goods before delivery?

A: Yes, we have 100% test before delivery

Q7: How do you make our business long-term and good relationship?

A: 1. We keep good quality and competitive price to ensure our customers benefit;

2. We respect every customer as our friend and we sincerely do business and make friends with them, no matter where they come from.

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    Mr ken (sales manager): +86 156 0767 8250