Model: WP13
Part Number: 612700040030
Brands: Weichai Power
Engine Model: WP13, WP13.480, WP13.500, WP13.550, WP13.580
Engine Type: Diesel
Scope of application: heavy haulage trucks, mining dump trucks, construction machinery, generator sets
On a 13-litre diesel, the cylinder head has to seal combustion pressures well above 150 bar while carrying the valve train and passing coolant through narrow jackets. Part 612700040030 is the complete head for the Weichai WP13 series, the engine used in long-haul tractors, mining dump trucks and large generator sets. It locates the injectors, holds the camshaft in some configurations and provides the seat for the valves that control every intake and exhaust event.
When a head cracks or warps, the symptoms appear gradually: coolant is consumed without an external leak, white smoke appears at start-up, compression drops on adjacent cylinders and the engine begins to overheat under load. Because the head sits at the centre of the combustion process, repairing it properly is the difference between a reliable rebuild and a comeback.
The 612700040030 head is used across the WP13 range, including the 480 to 580 horsepower ratings. Typical installations are HOWO and Shacman heavy tractors, 8x4 mining dump trucks, large wheel loaders and 300 to 500 kVA generator sets. The head is not interchangeable with the WP12 or WD618; the bore spacing and port layout differ.
Always confirm the engine plate and the casting number on the old head. Production changes affected injector bore depth and the position of the coolant outlet, and fitting the wrong variant causes poor performance and coolant leaks.
Each head is produced from a high-grade iron casting and then machined on the deck, valve seats, guides and injector bores. Before packing we check:
Heads are shipped assembled with valves and springs where requested, oiled and protected in a foam-lined carton that survives ocean freight.
Any of these should prompt a cooling system pressure test and, if needed, a head-off inspection. Running a cracked head usually destroys the head gasket and can score the liners.
If the head is supplied bare, have the seats cut and the guides checked by a machine shop. Never lap valves into unmachined seats.
The casting number and the engine rating are the two identifiers. A head from a lower-rated WP13 will physically fit a higher-rated engine but may have different valve and injector specifications. Send us the old head casting number and the engine plate and we will confirm.
For fleets, ordering the head together with the gasket kit and head bolts avoids mismatched parts and a second freight charge.
Cooling system discipline is the single biggest factor. Keep the coolant mixture within specification, replace the water pump and thermostat at the recommended interval, and never run with a failed fan clutch or a blocked radiator. Watch the aftercooler circuit as well; a restricted aftercooler raises intake temperature and puts extra thermal load on the head.
Yes by default. A bare head can be supplied if your workshop prefers to fit its own valve train.
No. They are different castings with different port and injector geometry and cannot be interchanged.
No. WP13 head bolts are torque-to-yield and must be replaced whenever the head is removed.
Usually overheating or a coolant flow problem. Repeated thermal cycling with poor coolant quality accelerates cracking.
See the full Weichai cylinder head range, and pair this head with the WP13 cylinder block 612700010001 or the WD615 cylinder head 61560040040.
We offer OEM quality and excellent after-sales service as a complementary option. Engine brands supported include Weichai, Baudouin, Yuchai, Caterpillar, FAW Xichai, Sinotruk, Cummins and other engine parts. Specifically engine overhaul kits, pistons, cylinder liners, crankshafts, camshafts, fuel pumps, water pumps, lube pumps, injectors, and other performance parts.
If you are not sure about the part number that you need, please provide all the information you have, such as the equipment nameplate, engine nameplate or engine number, or real photos.
On a 13-litre diesel, the cylinder head has to seal combustion pressures well above 150 bar while carrying the valve train and passing coolant through narrow jackets. Part 612700040030 is the complete head for the Weichai WP13 series, the engine used in long-haul tractors, mining dump trucks and large generator sets. It locates the injectors, holds the camshaft in some configurations and provides the seat for the valves that control every intake and exhaust event.
When a head cracks or warps, the symptoms appear gradually: coolant is consumed without an external leak, white smoke appears at start-up, compression drops on adjacent cylinders and the engine begins to overheat under load. Because the head sits at the centre of the combustion process, repairing it properly is the difference between a reliable rebuild and a comeback.
The 612700040030 head is used across the WP13 range, including the 480 to 580 horsepower ratings. Typical installations are HOWO and Shacman heavy tractors, 8x4 mining dump trucks, large wheel loaders and 300 to 500 kVA generator sets. The head is not interchangeable with the WP12 or WD618; the bore spacing and port layout differ.
Always confirm the engine plate and the casting number on the old head. Production changes affected injector bore depth and the position of the coolant outlet, and fitting the wrong variant causes poor performance and coolant leaks.
| We Are 30 Years Diesel Engine Parts Supplier | |
| Brand | EPID |
| Warranty | 12 Months |
| Condition | 100%New |
| More Models | Weichai: WP13, WP13.480, WP13.500, WP13.550, WP13.580, and other Weichai series. |
| Shipping | By sea / air / express (DHL, FEDEX, TNT, UPS, EMS) |
| Packing | Standard exporting packing or as required |
| Payment Term | L/C, T/T, Western Union, Trade Assurance |
| Delivery Time | 3-7 days (depend on order) |
| Selling Point | 1. On-time Delivery 2. Genuine Quality Assurance 3. Professional Supplier |
Each head is produced from a high-grade iron casting and then machined on the deck, valve seats, guides and injector bores. Before packing we check:
Heads are shipped assembled with valves and springs where requested, oiled and protected in a foam-lined carton that survives ocean freight.
Any of these should prompt a cooling system pressure test and, if needed, a head-off inspection. Running a cracked head usually destroys the head gasket and can score the liners.
If the head is supplied bare, have the seats cut and the guides checked by a machine shop. Never lap valves into unmachined seats.
The casting number and the engine rating are the two identifiers. A head from a lower-rated WP13 will physically fit a higher-rated engine but may have different valve and injector specifications. Send us the old head casting number and the engine plate and we will confirm.
For fleets, ordering the head together with the gasket kit and head bolts avoids mismatched parts and a second freight charge.
Cooling system discipline is the single biggest factor. Keep the coolant mixture within specification, replace the water pump and thermostat at the recommended interval, and never run with a failed fan clutch or a blocked radiator. Watch the aftercooler circuit as well; a restricted aftercooler raises intake temperature and puts extra thermal load on the head.
See the full Weichai cylinder head range, and pair this head with the WP13 cylinder block 612700010001 or the WD615 cylinder head 61560040040.
Yes by default. A bare head can be supplied if your workshop prefers to fit its own valve train.
No. They are different castings with different port and injector geometry and cannot be interchanged.
No. WP13 head bolts are torque-to-yield and must be replaced whenever the head is removed.
Usually overheating or a coolant flow problem. Repeated thermal cycling with poor coolant quality accelerates cracking.
EPID supplies diesel engine parts for Weichai, Baudouin, Yuchai, Caterpillar, Sinotruk, FAW Xichai and Cummins engines. Every order is checked against the original part number before packing, and our team can identify a part from a photo of the engine plate. Ask for a quotation with your model and quantity and we will reply within one working day.
