| No. | Part No. | Part Name | Qty | Old Drawing No. | Engine Model |
| 1 | Oil Filler Cap | 1 | 490B-11013A | ||
| 2 | Oil Filler Cap Gasket | 1 | 490B-11014 | ||
| 3 | Bonded Seal Washer 8 | 1 | JB982-1977 | ||
| 4 | SP109865 | Cylinder Head Cover Welded Assembly | 1 | A490B-11100 | A490BPG |
| 5 | SP109864 | Cylinder Head Cover Rubber Gasket | 1 | A490B-11004 | A490BPG |
| 6 | Nameplate Rivet 2X5 | 4 | GB/T827-1986 | ||
| 7 | Nameplate | 1 | A490BPG-11009 | ||
| 8 | Cap Nut M8 | 4 | GB/T923-1988 | ||
| SP107376 | Cylinder Head Cover Seal Ring | NA385B-11001 | 490BPG | ||
| SP107377 | Cylinder Head Cover | NA385B-11003 | 490BPG |
| No. | Part No. | Part Name | Qty | Old Drawing No. | Engine Model |
| 1-23 | SP109851 | Oil Pump | 2 | 490B-31203 | A490BPG,490BPG |
| 1 | Cylindrical Pin | 2 | 490B-31203 | ||
| 2 | Oil Pump Drive Gear | 1 | 490B-31001 | ||
| 3 | Oil Pump Body | 1 | 490B-31004 | ||
| 4 | 06B0005 | Flat Washer 8 | 5 | GB/T97.1-1985 | A490BPG,490BPG |
| 5 | 06B0006 | Spring Washer 8 | 5 | GB/T93-1987 | A490BPG,490BPG |
| 6 | 00B0020 | Hex Head Bolt M8X30 | 1 | GB/T5783-2000 | A490BPG,490BPG |
| 7 | 00B0075 | Hex Head Bolt M8X20 | 2 | GB/T5783-2000 | A490BPG,490BPG |
| 8 | SP107326 | Oil Pipe Assembly | 1 | 490B-33000 | A490BPG,490BPG |
| 9 | SP107327 | Gasket | 1 | 490B-33005 | A490BPG,490BPG |
| 10 | 03B0021 | Nut M8 | 2 | GB/T6170-2000 | A490BPG,490BPG |
| 14 | Oil Pump Cover | 1 | 490B-31005 | ||
| 15 | Steel Ball 10 | 1 | GB/T308-1989 | ||
| 16 | Pressure Relief Valve Spring | 1 | 490B-31003 | ||
| 17 | Pressure Adjusting Screw | 1 | 490B-31002 | ||
| 18 | SP107262 | Hex Nut M14X1.5 (Fine Pitch) | 1 | GB/T6171-2000 | A490BPG,490BPG |
| 19 | Small Hex Thin Nut M14X1.5 | 1 | GB/T6173-2000 | ||
| 20 | Oil Pump Cover Gasket | 1 | 490B-31007 | ||
| 21 | Inner Rotor | 1 | 490B-31202 | ||
| 22 | Outer Rotor | 1 | 490B-31008 | ||
| 23 | Oil Pump Shaft | 1 | 490B-31201 | ||
| 11 | Stud Bolt M8 | 4 | GB/T5782-2000 | ||
| 12 | SP110108 | Oil Strainer Assembly | 1 | 490B-31100A | A490BPG,490BPG |
| 8 | SP107326 | Oil Pipe Assembly | 1 | 490B-33000 | A490BPG,490BPG |
| 13 | Oil Strainer Gasket | 1 | 490B-31006 |