XZR8®
Bore Diameter87 mm
Ring Configuration3 Rings (2 Compression, 1 Oil)
Ring WidthsTop 2.5 mm, 2nd 2.0 mm, Oil 5.0 mm
Size ClassificationStandard (STD)
Quantity Per Set1 Piston Set (3 Rings)
Engine TypeDiesel
Manufacturer No.
1A091-210501A091210501A091-2105-0
OEM Part No.
1A091-21050
Engine Part No.
Kubota D1703Kubota V2203Kubota V2403Kubota D1803
Interchange No.
VPB40431A091-21051
Fitment Vehicles
Kubota KX121Kubota KX91Kubota U45Kubota KX101Kubota KX121-3Kubota KX121-3SBobcat S130Bobcat S150Bobcat S160Bobcat S175Bobcat S185

Engine System - Industrial Encyclopedia

OEM standard piston ring assembly 1A091-21050 for Kubota D1703 V2203 V2403 diesel engines, 87mm bore, fits excavators KX121 KX91 U45 and Bobcat loaders.