Big Block Chevy V8 396 427 454 502 Welsh Plug Kit Brass Material

Aeroflow Performance Welsh Plug Kit for Big Block Chevy V8 (396/427/454/502) — Brass & Steel

Aeroflow Performance’s Welsh Plug Kit in brass is designed to seal casting core holes in big-block Chevy blocks, safeguarding against freeze-thaw damage and keeping vital fluids securely inside the engine during operation. This complete, rebuild-ready solution combines brass Welch plugs with steel oil gallery plugs to provide all the components you need for a proper engine refresh.

What’s included

• 8 x 3/4" (19mm) outside diameter brass welsh plugs
• 1 x 2-15/64" (2.7mm) outside diameter plug
• 7 x 7/32" steel plugs (oil gallery plugs)

Compatibility & use

Designed for Big Block Chevy V8 engines in models 396, 427, 454, and 502. This kit covers the correct sizes needed for a thorough rebuild, with brass Welch plugs providing reliable sealing for core holes and steel oil gallery plugs delivering durable protection where oil passages require robust sealing.

Note: Cylinder head plugs are not included in this kit.