Weichai WD615 and Weichai WP10 engines power millions of trucks, buses, generators and marine vessels worldwide. Many importers ask the same question: are WD615 parts and WP10 parts interchangeable? The short answer: some are, most are not. Here is what you need to know before you order.
What the Model Names Mean
The WD615 is the classic Weichai platform: a 9.726 L inline-six used for decades in HOWO, Steyr-based and other heavy trucks. The WP10 (also called WP10.340/WP10.380) is its modernized successor with upgraded injection, emissions control and a revised block, built for Euro II–V markets.
Key Differences
- Block and cylinder head: redesigned on the WP10 — not interchangeable with WD615.
- Fuel system: WP10 runs higher-pressure injection and Bosch-style systems depending on emission stage.
- Power and emissions: WP10 covers 266–380 hp with cleaner combustion.
- Some shared internals: certain bearings and small components overlap — always check the OEM part number.
Popular WD615 Parts We Stock
- WD615E2 Piston Kit 612600030010
- WD615E2 Cylinder Liner 61500010344
- WD615 Full Gasket Kit 612600900162
- WD615.E2 Overhaul Repair Kit 612600900072
Popular WP10 Parts We Stock
How to Order the Right Parts
The safest way is to send us your engine serial number or the part number stamped on the old component. Our team confirms fitment before you pay, and we ship to Latin America, the Middle East and Africa with export documentation included.
Browse Weichai parts or contact us on WhatsApp for a quote.
