The HS42/012-300 is a genuine Mikuni 3-inch replacement clamp-on air filter element designed to fit Mikuni HSR42, HSR45, and HSR48 smoothbore carburetors.

features pleated cotton gauze filter media.

Specifications & Features
Brand/Model: Mikuni part # HS42/012-300
Inside Diameter: 3.00 inches (76 mm)
Filter Shape: Round
Filter Material: Pleated cotton gauze
Style: Clamp-on (includes mounting clamp)
Application: Motorcycle street/powersports applications using high-performance Mikuni HSR series carburetors