Main Bearing Shells Allocation
Courtesy of AUDI OF AMERICA, LLC
- Bearing shells with the correct thickness are allocated to the cylinder block in the factory. The colored dots on the sides of the bearing shell mark the bearing shell thickness.
- The allocation of the bearing shells to the cylinder block is indicated by a letter for each bearing shell of the cylinder block as shown.
| Letter on cylinder block |
Color of bearing |
| R |
= |
Red |
| S |
= |
Black |
| G |
= |
Yellow |
| U |
= |
Green |
| B |
= |
Blue |
Courtesy of AUDI OF AMERICA, LLC
- Bearing shells with correct thickness are allocated to bearing cap at factory. The colored dots on the sides of the bearing shell mark the bearing shell thickness.
- The allocation of bearing shells to bearing caps is identified by a letter on the rear crankshaft flange, as shown.
- The letter series begins with crankshaft bearing "1" (belt pulley side) and ends with crankshaft bearing "4" (transmission side).
| Code letter on the crankshaft flange |
Color of bearing |
| R |
= |
Red |
| S |
= |
Black |
| G |
= |
Yellow |
| U |
= |
Green |
| B |
= |
Blue |