EMPI Piston & Cylinder Set | VW Type 1 Air-Cooled | 83mm × 64mm Big-Bore, 40HP (98-1947-B)

EMPI Piston & Cylinder Set — 83mm × 64mm Big-Bore, 40HP | VW Type 1 Air-Cooled (98-1947-B)

EMPI's 83mm × 64mm piston and cylinder set (98-1947-B) is an 83mm slip-in big-bore for the 40HP case. It's a complete matched set of four for a VW Type 1 engine — pistons, cylinders, rings, wrist pins and clips, sized together.

Vehicle Fitment

• VW Type 1 Air-Cooled: Beetle, Karmann Ghia, Bus (Type 2)

Slip-in on a standard case machined for this bore — no special case work required, and it runs the stock crank. Not confirmed: Type 4 / 914 engines (different bore spacing and case).

Key Features & Benefits

• 83mm big-bore: 83mm bore × 64mm stroke slip-in for the 40HP case
• Matched set of 4: pistons and cylinders sized together for consistent fit
• Complete top-end: includes rings, wrist pins, and clips
• Stock-crank compatible: runs the standard 64mm crank

Technical Specifications

• Bore: 83mm
• Stroke: 64mm
• Displacement: 40HP big-bore
• Quantity: set of 4 (pistons + cylinders)
• Includes: rings, wrist pins, clips
• Brand: EMPI
• Part Number: 98-1947-B
• UPC: 707924433296

Frequently Asked Questions

• Does this fit my air-cooled VW Type 1? Yes — once the case is machined for this bore where required.
• Do I need a stroker crank? No — it runs the stock crank.
• What's included? A complete set for one engine: 4 cylinders, 4 pistons, rings, wrist pins, and clips.
• What's the part number? EMPI 98-1947-B (UPC 707924433296).

Explore Related Categories

Engine Parts · All VW Air-Cooled · EMPI

WARNING: This product can expose you to chemicals known to the State of California to cause cancer and reproductive harm. For more information, go to www.P65Warnings.ca.gov. All parts legal for use on pre-pollution-controlled vehicles only.