Mahle

Mahle GM Gen V 5.3 LT 3.780" Bore 1.2mm 1.5mm 2.5mm Ring Set 42216CP Replacement ring set for GM Gen V 5.3 LT 3.780" Bore 1.2mm 1.5mm 2.5mm       

Mahle GM LS 3.780" Bore 1.5mm 1.5mm 3.0mm Ring Set 41859CP Replacement ring set for GM LS w/ 3.780" bore 1.5mm 1.5mm 3.0mm.