1800cc Piston Ring Set - 93mm Bore - Type 4 Engines

This replacement piston ring set is designed for standard 1800cc aircooled Type 4 engines using 93mm pistons. Proper piston ring sealing is essential for maintaining compression, controlling oil consumption, and ensuring efficient combustion. When rings wear or lose tension, common symptoms include poor starting, reduced power, excessive oil usage, and increased crankcase pressure.

These rings are manufactured to suit original-spec 93mm pistons as fitted to factory 1800cc Type 4 engines. They restore correct sealing between the pistons and cylinder walls, helping return the engine to smooth, efficient running. Ideal for use during a full engine rebuild, top-end overhaul, or whenever pistons and barrels are removed.

Produced as a good-quality reproduction, this ring set is manufactured to correct factory dimensions and clearances. Each piston uses three rings—two compression rings and one oil control ring—and this set supplies all rings required to fully rebuild one complete engine.

Quality

• Good quality reproduction

Quantity

• Sold as a complete set for one engine

• Includes rings for 4 pistons

Specifications

• Piston diameter: 93mm

• Ring sizes (top to bottom):

  • 2mm compression ring

  • 2mm compression ring

  • 5mm oil control ring

Fitment

• Engine codes: AP, AW, AN, AT, ED, EC

Applications

• VW Baywindow Van: 1973 – 1975 (1800cc Type 4)

• Porsche 914: 1974 – 1976 (1800cc Type 4)