Model: WP7 / WP8
Part Number: 1001996660
Brands: Weichai Power
Engine Model: WP7, WP7H, WP8, WP8H
Engine Type: Diesel
Scope of application: medium and heavy trucks, buses, construction machinery, generator sets
The WP7 and WP8 are the mid-range engines in the Weichai line-up, widely used in medium trucks, buses and construction equipment. Part 1001996660 is the coolant pump for these engines, driven by belt from the crankshaft and sealed against the block. It circulates coolant through the block, head, oil cooler and radiator at a rate matched to the heat produced under full load.
Mid-range engines spend much of their life in stop-start urban duty, which is actually harder on a pump than steady highway running. Every cold start adds load on the seal and bearing, and heat cycles accelerate wear in the impeller housing.
The pump suits WP7, WP7H, WP8 and WP8H engines in trucks, buses, wheel loaders and generator sets. Confirm the engine plate and the old pump number, because pulley diameter and inlet position vary between the road and industrial versions. A pump with the correct casting but the wrong pulley will not align with the belt and destroys itself within hours.
Each pump is supplied with a new gasket and O-ring. The unit ships with the hub protected so the seal cannot be disturbed in transit.
Do not wait for the bearing to collapse. A failed bearing lets the fan contact the radiator, turning a cheap repair into a large one.
Match the engine plate, the old pump number and the pulley type. Road, bus and industrial versions can differ in pulley diameter and inlet angle even when the pump body looks identical. Send a photo of the old pump with a ruler alongside it and we will confirm the part before shipping.
Pumps last longest in clean systems. Flush the radiator at interval, keep the coolant concentration correct, and replace the thermostat and pressure cap when due. Clean the radiator core externally in dusty operations; a blocked core raises temperature and shortens seal life even when the pump is healthy.
Most premature water pump failures on WP7 and WP8 engines trace back to belt alignment rather than the pump itself. A worn tensioner, a misaligned idler or the wrong pulley offset side-loads the pump bearing continuously, and the seal starts weeping within a few thousand kilometres.
Before fitting a new pump, check the belt path with a straight edge across the pulleys, inspect the tensioner for a rough bearing and confirm the belt width matches the pulley grooves. Replace any component that shows play. Re-tension after the first heat cycle, because a new belt stretches slightly and a loose belt slips, glazes and overheats the pump.
Because this pump is used across WP7 and WP8 models, fleets running mixed trucks can standardise on one part number. Keep two on the shelf, one for fitment and one as a loan unit, together with gaskets and thermostat housing seals so that a repair can be completed in a single visit.
Yes, the gasket and O-ring are supplied. We recommend replacing the thermostat housing gasket at the same time.
No. The WP10 uses a different pump. Ask us for the matching part number.
Only to reach a workshop. Coolant loss leads to overheating and head damage.
The pump is supplied with the hub. Tell us if you need the complete assembly with pulley.
Browse the Weichai pump category, and pair the pump with the WD615 and WP10 water pump 612600061364 or the WP12 and WP13 water pump 1000437469.
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.
The WP7 and WP8 are the mid-range engines in the Weichai line-up, widely used in medium trucks, buses and construction equipment. Part 1001996660 is the coolant pump for these engines, driven by belt from the crankshaft and sealed against the block. It circulates coolant through the block, head, oil cooler and radiator at a rate matched to the heat produced under full load.
Mid-range engines spend much of their life in stop-start urban duty, which is actually harder on a pump than steady highway running. Every cold start adds load on the seal and bearing, and heat cycles accelerate wear in the impeller housing.
The pump suits WP7, WP7H, WP8 and WP8H engines in trucks, buses, wheel loaders and generator sets. Confirm the engine plate and the old pump number, because pulley diameter and inlet position vary between the road and industrial versions. A pump with the correct casting but the wrong pulley will not align with the belt and destroys itself within hours.
| We Are 30 Years Diesel Engine Parts Supplier | |
| Brand | EPID |
| Warranty | 12 Months |
| Condition | 100%New |
| More Models | Weichai: WP7, WP7H, WP8, WP8H, 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 pump is supplied with a new gasket and O-ring. The unit ships with the hub protected so the seal cannot be disturbed in transit.
Do not wait for the bearing to collapse. A failed bearing lets the fan contact the radiator, turning a cheap repair into a large one.
Match the engine plate, the old pump number and the pulley type. Road, bus and industrial versions can differ in pulley diameter and inlet angle even when the pump body looks identical. Send a photo of the old pump with a ruler alongside it and we will confirm the part before shipping.
Pumps last longest in clean systems. Flush the radiator at interval, keep the coolant concentration correct, and replace the thermostat and pressure cap when due. Clean the radiator core externally in dusty operations; a blocked core raises temperature and shortens seal life even when the pump is healthy.
Most premature water pump failures on WP7 and WP8 engines trace back to belt alignment rather than the pump itself. A worn tensioner, a misaligned idler or the wrong pulley offset side-loads the pump bearing continuously, and the seal starts weeping within a few thousand kilometres.
Before fitting a new pump, check the belt path with a straight edge across the pulleys, inspect the tensioner for a rough bearing and confirm the belt width matches the pulley grooves. Replace any component that shows play. Re-tension after the first heat cycle, because a new belt stretches slightly and a loose belt slips, glazes and overheats the pump.
Because this pump is used across WP7 and WP8 models, fleets running mixed trucks can standardise on one part number. Keep two on the shelf, one for fitment and one as a loan unit, together with gaskets and thermostat housing seals so that a repair can be completed in a single visit.
Browse the Weichai pump category, and pair the pump with the WD615 and WP10 water pump 612600061364 or the WP12 and WP13 water pump 1000437469.
Yes, the gasket and O-ring are supplied. We recommend replacing the thermostat housing gasket at the same time.
No. The WP10 uses a different pump. Ask us for the matching part number.
Only to reach a workshop. Coolant loss leads to overheating and head damage.
The pump is supplied with the hub. Tell us if you need the complete assembly with pulley.
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.
