Volvo B20/B30 Piston Set – +0.030" (89.67 mm)

Oversize piston set for Volvo B20 and B30 engines with a +0.030" (89.67 mm) bore, intended for engine blocks that have been bored and honed to service size. Used during rebuilds to restore correct clearance, sealing, and reliable operation.

The pistons feature a flat-top design in line with standard specifications, providing a predictable combustion chamber and working well with original cylinder heads and various gasket options. A proven choice for engine rebuilds, street use, club driving, and historic motorsport.

Supplied as a complete set including four pistons, piston pins, and piston rings, ready for installation.

Specifications

• Engines: Volvo B20/B30 (1974–)

• Oversize: +0.030"

• Bore diameter: 89.67 mm

• Piston type: Flat-top

• Piston pin diameter: 24 mm

• Contents: 4 pistons, 4 piston pins, and piston rings

Note: B30 engines require a total of six pistons.