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

Oversize piston for Volvo B20 and B30 engines, intended for blocks bored to 89.67 mm (+0.030"). Features a flat-top piston design and a 22 mm piston pin, and is supplied complete with piston rings and piston pin, ready for installation in a properly machined block.

This is an OE-specification piston from Mahle / Volvo, designed for rebuilds where correct fit, durability, and consistent performance are required. Well suited for original restorations, period-correct builds, and street or track engines where long service life and predictable compression characteristics are important.

Specifications

• Engine applications: Volvo B20 / B30 (early versions)

• Oversize: +0.030"

• Bore diameter: 89.67 mm

• Piston type: Flat-top

• Piston pin diameter: 22 mm

• Manufacturer: Mahle / Volvo OE

• Supplied with: Piston, piston rings, and piston pin

• OE references: 3731-030, 3731.030, 03731030, 0373102, 272004