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Header Welding Purge Plate: Design Your Own!

Purge Plate

Revolutionary Purge Plates from Stainless Headers Mfg., Inc. Now, craft your very own Purge Plate design to best suit your business' particularly needs! With the ability to add nearly any small block, big block, or hemi combination together, the Design-Your-Own Purge Plates allow for thousands of different cylinder head combinations.
Limited Supply
Availability: CNC Milled-To-Order. Expected Lead time of 6-8 Weeks
Was: $899.95
Sale: $779.90
Save: 13%
Save: $120.05

Customize Your Item

- Chevrolet Bolt Patterns -
 * required
- 3/8"-16 Helicoil Repair Kit? -
 * required
- Add (4) Barbed NPT Fittings? -
 * required
- Add Hard-Shell Storage/Carrying -
 * required
- -
 * required


Header Welding Purge Plate: Design Your Own!



  • Up to (4) Unique Bolt Patterns. We can custom-fit nearly any combination of bolt patterns together for you to create a Purge Plate to best suit your own custom header building needs! Simply select up to (4) different cylinder head options, and we will custom design the Purge Plate that works for you.
  • (4) Independent Purge Inlet Fittings.
  • (4) Independent Purge/Argon Diffusers
  • 1" Thick Billet Aluminum heat sink
  • Hard-Coat Anodized Finish for Durability
  • Laser-Engraved Bolt Pattern Identification & Description

Kit Contents:

  • (1) Design Your Own Purge Plate
  • (4) 1/4" NPT Air-Style Male Quick-Connect Fittings
  • (4) 1/4" NPT Argon Diffusers
  • (1) Roll of PTFE Thread Tape
  • (1) Stainless Header Bolt Kit (Will be selected to best fit your custom bolt pattern needs)

Optional Add-On's:

  • Optional Gaskets available for any of the selected bolt patterns.
  • (4) 3/8" Helicoil Kit for thread repairs
  • (4) 1/4" NPT Barbed Hose Fittings (add-on, kit will ALSO come with standard quick-release style fittings)
  • Hard-Shell Storage/Carrying Case

A revolutionary tool from Stainless Headers Mfg., Inc. These purge plates combine the best solutions for your header welding needs, without compromising anywhere. They are CNC machined from 1” thick billet aluminum, and finished in a hard anodized coating. Each purge plate is themed for a particular combination of cylinder heads to maximize a builder’s efficiency.

Each pattern features every bolt, drilled & tapped for the header bolt size appropriate for that specific cylinder head, allowing the builder to maximize clamping force against the purge plate. Most commonly, this will be 3/8" bolt size, but other popular options include M8 (LS Heads) and 5/16" (Gen III Hemi Heads).

Each port also includes a top-mounted ¼” NPT port for various purge fittings.
Each plate comes with argon diffuses already installed in these port centers, to maximize argon coverage for flange welds and efficiently purging your header system- creating stronger welds, reduced contamination, and lower argon usage. The front face of each port has a purge line and quick-connect fitting built in, ready for a quick-connect argon line to efficiently swap your purge line between cylinders, continuing to save on argon costs, while improving weld quality.

Every Purge Plate comes engraved with bolt pattern identification, and a short description of applicable cylinder heads the bolt pattern connects with. These Purge Plates are the perfect Welder’s Helper when it comes to effective heat sink, argon usage, bolt pattern verification, and maintenance free upgrades to your welding arsenal. The combination of bolt patterns drastically reduces costs by saving on quantity of tools required for any weld shop, and maintaining complete clamping force. With over 100 variants, there is a plate to cover all of your header welding needs.

Patent Pending




Shipping Information

  • Item Requires Shipping
  • 25.0 lbs.
  • W25.0000” x H13.0000” x L5.0000”
  • $15.00
  • This item ships in its own box.

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