Hastings piston ring set for 94 mm bore VW Type 4 air-cooled engines with chrome compression rings. EMPI's description specifically identifies this as a Type IV application — confirm yours is a Type 4 / 914 build before ordering. Chrome rings offer longer life and faster break-in than cast iron. Complete set for a 4-cylinder engine.

Application

• 94 mm bore VW Type 4 / Porsche 914 (≈2.0L stock, or stroker builds)
• Pistons machined for a 1.75 mm top compression groove
• Pair with matching 94 mm Type 4 pistons cut for this stack

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: 1.75 mm
• Second compression: 2 mm
• Oil control: 4 mm
• Material: Chrome compression rings

Confirm the ring groove widths cut into your pistons match this stack before ordering. The three 94 mm sets (1.5 / 1.75 / 2 mm top) are NOT interchangeable.

Specifications

• EMPI Part #: 98-1239-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.