Description

The Pioneer EP-37 Freeze Plug is a 7/16″ 11mm steel concave expansion plug designed for engine blocks. Manufactured by Pioneer Automotive, this freeze plug is also known by part numbers PL-37 and EP37. It is sold individually and is compatible with Melling MEP-37 as an interchange part. This non-vintage performance part is a reliable component for engine maintenance and repair, offering durability and quality for automotive applications.