This listing is for an engine kit compatible with 2019-2021 GM Chevy 5.3L Gen V Direct Injected engines. VIN code "F". Please verify! VIN refers to the 8th character in the vehicles ID in lower side driver dash. For 3.780" Diameter Cylinder Bores (Standard Size). And Standard crankshaft journals. KIT Includes: Complete engine Gaskets set Connecting rod bearings Crankshaft main Bearings Piston Rings.1.2mm (Top), 1.5mm (2nd) & 2.5mm oil Ring Widths CAMSHAFT PLATE Camshaft Bearings OE 12733671 GM Oil PUMP Timing Chain, Crank Gear and Tensioner. Cylinder Head Bolts This is Standard size kit! If over sizes rings or bearings are needed, please message seller before ordering to verify availability of size you need! Fitment: CHEVROLET SILVERADO 1500 2019-2021 CHEVROLET SUBURBAN 2019-2021 CHEVROLET TAHOE 2019-2021 GMC SIERRA 1500 2019-2021 GMC YUKON 2019-2021 GMC YUKON XL 2019-2021