Brass, Stainless & Mild Steel Core Plugs
worldwide delivery - Engine Core Plugs
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Brass, Stainless Steel, Mild Steel, Dish and Cup Engine Core Plugs

Various plugs, cupped & dished in steel & brass

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Core Plugs International™ are the only supplier in the UK (and possibly the world) that stock the biggest range of core plugs in various metals.

While our main focus is on mild steel, stainless steel, and brass, we also offer other metals such as copper and aluminium upon request. The estimated lead time for obtaining materials, pressing, and delivery ranges from 5 to 20 working days.

For custom-sized plugs or sizes not currently listed, a lead time of 4-6 weeks is necessary to finalize specifications and create tooling. Additional fees will be charged.

Bulk discounts are applied automatically at checkout, ranging from 10% to 50% off the total amount (beginning at £20), excluding postage.

Please note: Due to the difference in names, a 'Core Plug' - either 'cup' or 'dish/welch', can be referred to as the following misnomers: Freeze, Frost, Expansion, Saucer and Welsh. See our Frequently Asked Questions page for more information.
 

Delivery information | Terms of Sale, Returns & Refunds

 

Orders placed before 4:30 pm from Monday to Friday (UK time) will be dispatched on the same day.
Certificates of Conformity and Initial Sample Inspection Reports are available upon request. We welcome Non-Disclosure Agreements.

How to replace core plugs

 

Featured

Assorted Imperial Cup Box of 72 - NEW!

Assorted Imperial Cup Box of 72 - NEW!

The assorted box contains Six each of the followin..

£23.00

Assorted Metric Dish x120 - NEW!

Assorted Metric Dish x120 - NEW!

The assorted box contains SIX each of the followin..

£33.00

Assorted Imperial Cup x78

Assorted Imperial Cup x78

Six each of the following (inch) 1.3/8, 1.1/2, ..

£40.00

Hylosil Instant Gasket (40ml)

Hylosil Instant Gasket (40ml)

Acetoxy curing RTV silicone sealant May not be ..

£4.20

Digital Vernier Caliper,150mm (6 Inch)

Digital Vernier Caliper,150mm (6 Inch)

Large LCD Screen - The digital vernier caliper ..

£9.75

Assorted Imperial Dish x120 - NEW!

Assorted Imperial Dish x120 - NEW!

The assorted box of dish/welch plugs contains SIX ..

£38.90

Assorted Metric Cup x96 - NEW!

Assorted Metric Cup x96 - NEW!

The assorted box contains SIX each of the followin..

£25.00

Assorted Metric Dish x140

Assorted Metric Dish x140

The assorted box contains TEN each (13 different s..

£29.00