Pioneer Cables PE-222-R Engine Expansion Plug Kit

Engine Expansion Plug Kit for Mazda Applications

Pioneer Cables PE-222-R is an engine expansion plug kit for select Mazda cylinder block applications. It is built for rebuild and service work where a reliable block plug is needed to restore sealing performance in the engine cooling system.

Key Features

• Steel expansion plug construction for long-lasting strength
• Zinc-plated finish for added corrosion resistance
• Engineered for Mazda MX-3, Mazda 323, and Mazda Miata applications
• Suitable for engine rebuilders and cylinder block service
• Part number PE-222-R for accurate ordering and lookup

Product Details

Pioneer Cables PE-222-R is part of the brand’s expansion plug program, which includes steel, stainless steel, brass, and threaded styles for engine service work. This steel version uses fine-grained, cold-rolled steel with zinc plating to help resist corrosion in demanding cooling-system environments. It is a direct-fit service part for select Mazda engines, including 1986-1994 Mazda 323, 1990-1993 Mazda Miata, and 1992-1996 Mazda MX-3. The PE-222-R designation is useful when matching the correct engine block plug during rebuild or repair.

Common Uses

• Replacing a leaking or corroded engine block expansion plug
• Restoring coolant sealing during engine rebuilds
• Repairing block openings after plug deterioration
• Addressing coolant loss caused by failed freeze plugs

Installation Notes

Clean the block bore thoroughly before installation and verify the plug size and seating surface before pressing or driving it into place. Use proper installation practices for engine expansion plugs to avoid distortion or leakage. Confirm vehicle application by year, make, and model before ordering PE-222-R.

Quality Assurance

Pioneer Cables supplies expansion plugs in multiple materials to match application needs, with steel construction and zinc plating used here for strength and corrosion resistance. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.