Hastings piston ring set for 90 mm bore VW Type 4 and Porsche 914 air-cooled engines. Chrome compression rings — Hastings' upgrade material for longer life, better wear resistance, and reduced break-in time compared to cast iron. The 2×2×5 stack identifies this as a Type 4 application, not a Type 1 big-bore. Complete set for a 4-cylinder engine.

Application

• 90 mm bore — stock VW Type 4 1.7L / 1.8L / 2.0L (Bus 1972-1979 with Type 4 engine)
• Stock Porsche 914 1.7L / 1.8L / 2.0L
• Pair with matching 90 mm Type 4 pistons during a rebuild

Ring Stack — read before ordering

Hastings rings are specified by their groove widths in millimeters, in the order top compression / second compression / oil control:

• Top compression: 2 mm
• Second compression: 2 mm
• Oil control: 5 mm
• Material: Chrome compression rings

Confirm the ring groove widths cut into your pistons match this stack before ordering. Mismatched ring stacks will not seat properly.

Specifications

• EMPI Part #: 98-1233-B
• Set covers 4 cylinders (one complete engine)

About Hastings

Hastings has been making piston rings in the United States since 1915. Their cast iron and chrome ring sets are a long-standing standard for air-cooled VW engine rebuilds — known for consistent quality and tight gap tolerances out of the box.