Hastings Ring Set — 94mm, 1.75×2×4 Chrome | VW Type 4 & Porsche 914 (98-1239-B)
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Hastings Piston Ring Set — 94mm Bore, 1.75×2×4 Chrome — VW Type 4 & Porsche 914 (98-1239-B)
Hastings piston ring set for 94mm bore VW Type 4 & Porsche 914. EMPI's description specifically identifies this as a Type IV application — confirm yours is a Type 4 / 914 build before ordering. Chrome compression rings offer longer life and faster break-in than cast iron. Complete set for a 4-cylinder engine.
Important — read before ordering: Hastings rings are specified by groove width (top compression / second compression / oil control). This is a 1.75 mm top / 2 mm second / 4 mm oil stack. 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.
Vehicle Fitment
- VW Type 4 (Bus, Type 4 engine): 1971–1979, 94 mm bore (≈2.0L stock or stroker builds)
- Porsche 914: 1970–1976, 94 mm bore
- Pairing: match with 94 mm Type 4 pistons cut for this ring stack
Why Choose 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.
Key Features & Benefits
- Chrome compression rings: longer life and faster break-in than cast iron
- Complete engine set: covers all 4 cylinders (one full engine)
- Consistent quality: known for tight gap tolerances out of the box
Technical Specifications
- Bore: 94 mm
- Ring stack (top / second / oil): 1.75 mm / 2 mm / 4 mm
- Top compression: 1.75 mm
- Second compression: 2 mm
- Oil control: 4 mm
- Material: Chrome compression rings
- Coverage: 4 cylinders (one complete engine)
- EMPI Part #: 98-1239-B
Frequently Asked Questions
- What is the ring stack for this set? The groove widths are 1.75 mm top compression / 2 mm second compression / 4 mm oil control, in chrome compression rings.
- How many cylinders does the set cover? All four — the set is one complete engine.
- How do I know it will fit my pistons? Confirm the ring groove widths machined into your pistons match this stack before ordering. The three 94 mm sets (1.5 / 1.75 / 2 mm top) are NOT interchangeable.