Crankshaft Main Bearing

On 2VZ-FE, 3A-C, 3E, 4A-C, 4A-GE, 4A-GEC, 4A-GEL, 4A-GELC, 4A-GZE, 4A-LC, 7M-GE, 7M-GTE, 22R, 22R-E and 22R-TE engines, main and connecting rod bearings are available in standard and undersizes of .010 inch (.25 mm).
On 3VZ-E, 4K-E and 5M-GE engines, main and connecting rod bearings are available in standard and undersizes of .010 inch (.25 mm) and .020 inch (.50 mm).
On 2S-E, 3S-FE, 3S-GE, 3S-GTE, 3Y-EC and 4Y-EC engines, undersize bearings are not available. If crankshaft journals or crankpins are worn or scored, the crankshaft must be replaced.