Quick view 2010 Hummer H3 5.3L Engine Rebuild Kit EK3201.E21 2010 Hummer H3 5.3L Engine Rebuild Kit EK3201.E21 Engine Rebuild Kit includes: Piston Set, Piston Ring Set, Main Bearings Set, Rod Bearings Set, Head Gasket Set, Lower Gasket Set, Freeze Plug Set... MSRP: Was: Now: $677.97 Choose Options