You’ll find below the simplified list of parts that are involved in the hybrid engine design along with their weight in tokens according to Appendix 4 of the 2015 Formula One technical regulations.
| Caption | Component | Weight |
| 1 | Engine water pumps | 1 token |
| 2 | Oil scavenge system | 1 token |
| 3 | MGU-H – Complete system | 2 tokens |
| 3 | MGU-H – position | 2 tokens |
| 4 | Turbocharger – Compressor | 2 tokens |
| 5 | Turbocharger – Turbine | 2 tokens |
| 6 | Inlet system – plenum | 1 token |
| 7 | Inlet system – Trumpets and associated parts | 1 token |
| 8 | Inlet system – Throttles and associated parts | 1 token |
| 9 | Injection system | 2 tokens |
| 10 | Ignition system | 1 token |
| 11 | Cylinder head | 2 tokens |
| 12 | Energy Store (ES) – Battery cells | 2 tokens |
| 12 | Battery Management System (BMS) | 2 tokens |
| 12 | ERS – Cooling/lubrication | 1 token |
| 12a | ERS – Wiring loom | 1 token |
| 13 | MGU-H – Power electronics | 1 token |
| 14 | MGU-K – Power electronics | 1 token |
| 15 | Oil tank | 1 token |
| 16 | Oil pressure pumps | 1 token |
| 16 | All parts in which circulates oil under pressure | 1 token |
PU components have been broken down into two tables for better readability on both illustrations.
| Caption | Component | Weight |
| 17 | Crankcase – cylinder bore spacing, deck height, bank stagger* | 2 tokens |
| 17 | Crankcase – all other dimensions | 3 tokens |
| 18 | MGU-K | 2 tokens |
| 18 | MGU-K – position, transmission | 2 tokens |
| 19 | Crankshaft – Crank throw, main bearing journal diameter, etc* | 2 tokens |
| 19 | Crankshaft | 2 tokens |
| 20 | Con rods | 2 tokens |
| 21 | All parts defining combustion – Piston crown, chamber, etc. | 3 tokens |
| 21 | Pistons | 2 tokens |
| 22 | Valves | 2 tokens |
| 22 | Valve drive | 2 tokens |
| 23 | Pneumatic valve return system | 1 token |
| 24 | Valve drive/camshaft – from camshaft lobe to gear train | 1 token |
| 25 | Valve drive – Gear train | 2 tokens |
| 26 | Exhaust system | 1 token |
| 26 | Wastegate | 1 token |
| 27 | Electrical system | 1 token |
| 28 | Covers – cam-timing covers, cam covers, etc. | 1 token |
| 29 | Ancillaries drive | 3 tokens |
| 30 | Friction coatings | 1 token |
| 31 | Sliding or rotating seals | 1 token |
| Total : | 66 tokens |
*PU components that have been totally frozen by the FIA ahead of 2015





