Enginetech S81234-STD Piston Ring Set 1.8L 1781cc DOHC 20V Standard Size

The Enginetech S81234-STD is a standard-size steel piston ring set engineered for the Volkswagen 1.8L (1781cc) DOHC 20-valve turbocharged four-cylinder engine. Designed as a direct-fit replacement, this set is built to OE specifications for reliable sealing, compression retention, and long service life during engine rebuilds.

Ring widths for this application are 1.5mm / 1.75mm / 2.0mm, matching the original groove dimensions of the VW/Audi 1.8T cylinder bores (3.19" bore / 3.40" stroke). The set is produced in OE manufacturing facilities using premium gray iron, ductile iron, and high-strength steel, with face coating options including plasma moly, chrome, and stainless steel for enhanced wear resistance.

Key Features:

• Standard (STD) bore size — no machining required for standard-dimension cylinders
• Premium steel construction for durability in turbocharged applications
• Ring widths: 1.5mm top compression / 1.75mm second compression / 2.0mm oil control
• Engineered to OE manufacturing tolerances for proper seal and compression
• Produced in OE manufacturing facilities
• Compatible with Enginetech piston P4011 and OE-equivalent pistons using S81234 rings

Designed for engine rebuilders working on the VW/Audi 1.8T platform. Always verify cylinder bore dimensions before installation and refer to rebuild manual notes for proper ring gap and orientation specifications.