Pioneer Automotive Industries Engine Expansion Plug Kit P/N:PE-100-B

Keep the core openings in your engine casting sealed with the Pioneer Expansion Plug Kit PE-100-B. It is cataloged for the 1967-1997 Chevrolet Camaro, the 1988-1997 Chevrolet C1500 and K1500, the 1991-1996 Buick Roadmaster, the 1995-1996 AM General Hummer and hundreds of other listed applications. See the Buyer's Guide tab for the full list.

Expansion plugs are pressed into the openings left in an engine casting during manufacturing and seal them so fluid stays inside the engine. This engine expansion plug kit is part of Pioneer's expansion plug program, which Pioneer also offers in bulk pack quantities for engine rebuilders.

• Engine coverage: The listed applications use L6-4.1L, V8-4.3L, V8-4.4L, V8-4.6L, V8-4.9L, V8-5.0L, V8-5.3L, V8-5.4L and V8-5.7L engines.
• Quantity: The listed applications use one kit each. The minimum order quantity is 1.
• Shipping: Not classified as a hazardous material.
• Availability: Released and available to order.

Signs an expansion plug may need replacing: fluid seepage or weeping around a plug, visible rust or corrosion on the plug face, or a plug that has pushed out of its bore. Confirm the source of any leak before replacing parts. Plugs are also commonly replaced during an engine rebuild, while the openings are accessible.