Model: WP12 / WP13
Part Number: 1000437469
Brands: Weichai Power
Engine Model: WP12, WD12, WD618, WP13
Engine Type: Diesel
Scope of application: heavy trucks, mining dump trucks, construction machinery, marine and generator engines
Part 1000437469 is the coolant pump used on the 12 and 13-litre Weichai diesel family, including WP12, WD618 and WP13. The engine range shares a common front-end layout, which is why one pump part number covers several models. That makes stock planning simple for fleets running mixed trucks, but it also means the pump must meet the highest flow requirement in the family.
Coolant flow decides how quickly heat leaves the liners and head. When the pump weakens, the engine does not overheat at idle; it overheats under load, exactly when the truck is working hardest. On a 13-litre engine the consequences escalate quickly: warped head, failed gasket, scored liner.
Typical installations include HOWO and Shacman heavy tractors, mining dump trucks, large loaders, marine auxiliary engines and generator sets. Because several models share the pump, confirm the engine plate and the old pump casting number, especially on marine and industrial units where the pulley and inlet position can differ.
Every pump is supplied with a new gasket and O-ring, the hub protected and the unit packed so that the seal cannot be disturbed in transit.
A noisy pump is a warning, not a nuisance. If the bearing collapses, the fan can contact the radiator and turn a cheap repair into an expensive one.
Do not use sealant on top of a new gasket; it squeezes out and blocks coolant passages. If the block face is pitted, clean it properly rather than adding more sealant.
Match the engine plate, the old pump number and the pulley type. Industrial and marine variants may use a different inlet elbow. If the engine has been rebuilt with a later front cover, confirm the mounting pattern before ordering. Send a photo of the old pump and we will check it against the casting list.
Pumps last longest in clean systems. Flush the radiator at interval, keep the coolant concentration correct, replace the thermostat and pressure cap when due and clean the radiator core externally in dusty operations. A blocked core raises coolant temperature and shortens seal life even when the pump is healthy.
Because this pump covers WP12, WD618 and WP13, fleets with mixed trucks can standardise on one part number. Before stocking, confirm that every engine in the fleet uses the same pulley and inlet arrangement; some industrial and marine units differ even though the pump body is identical.
Workshops that service these engines regularly usually keep two pumps on the shelf, one for immediate fitment and one as a loan unit while the failed pump is returned. The pump is compact, does not deteriorate in storage and is far cheaper than a day of truck downtime. Pair the stock with gaskets and thermostat housing seals so that a repair can be completed in one visit.
Yes, 1000437469 covers WP12, WD618 and WP13 applications. Confirm the old pump number if the engine has been rebuilt.
Yes, the gasket and O-ring are supplied. We recommend replacing the thermostat housing gasket at the same time.
Only to reach a workshop. Coolant loss leads to overheating, and overheating warps the head.
Remove the belt and spin the pump by hand. Roughness or play confirms the bearing.
Browse the Weichai pump category, and pair the pump with the WP12 cylinder head 612630040001 or the WP13 cylinder liner 612700010010.
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.
Part 1000437469 is the coolant pump used on the 12 and 13-litre Weichai diesel family, including WP12, WD618 and WP13. The engine range shares a common front-end layout, which is why one pump part number covers several models. That makes stock planning simple for fleets running mixed trucks, but it also means the pump must meet the highest flow requirement in the family.
Coolant flow decides how quickly heat leaves the liners and head. When the pump weakens, the engine does not overheat at idle; it overheats under load, exactly when the truck is working hardest. On a 13-litre engine the consequences escalate quickly: warped head, failed gasket, scored liner.
Typical installations include HOWO and Shacman heavy tractors, mining dump trucks, large loaders, marine auxiliary engines and generator sets. Because several models share the pump, confirm the engine plate and the old pump casting number, especially on marine and industrial units where the pulley and inlet position can differ.
| We Are 30 Years Diesel Engine Parts Supplier | |
| Brand | EPID |
| Warranty | 12 Months |
| Condition | 100%New |
| More Models | Weichai: WP12, WD12, WD618, WP13, 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 |
Every pump is supplied with a new gasket and O-ring, the hub protected and the unit packed so that the seal cannot be disturbed in transit.
A noisy pump is a warning, not a nuisance. If the bearing collapses, the fan can contact the radiator and turn a cheap repair into an expensive one.
Do not use sealant on top of a new gasket; it squeezes out and blocks coolant passages. If the block face is pitted, clean it properly rather than adding more sealant.
Match the engine plate, the old pump number and the pulley type. Industrial and marine variants may use a different inlet elbow. If the engine has been rebuilt with a later front cover, confirm the mounting pattern before ordering. Send a photo of the old pump and we will check it against the casting list.
Pumps last longest in clean systems. Flush the radiator at interval, keep the coolant concentration correct, replace the thermostat and pressure cap when due and clean the radiator core externally in dusty operations. A blocked core raises coolant temperature and shortens seal life even when the pump is healthy.
Because this pump covers WP12, WD618 and WP13, fleets with mixed trucks can standardise on one part number. Before stocking, confirm that every engine in the fleet uses the same pulley and inlet arrangement; some industrial and marine units differ even though the pump body is identical.
Workshops that service these engines regularly usually keep two pumps on the shelf, one for immediate fitment and one as a loan unit while the failed pump is returned. The pump is compact, does not deteriorate in storage and is far cheaper than a day of truck downtime. Pair the stock with gaskets and thermostat housing seals so that a repair can be completed in one visit.
Browse the Weichai pump category, and pair the pump with the WP12 cylinder head 612630040001 or the WP13 cylinder liner 612700010010.
Yes, 1000437469 covers WP12, WD618 and WP13 applications. Confirm the old pump number if the engine has been rebuilt.
Yes, the gasket and O-ring are supplied. We recommend replacing the thermostat housing gasket at the same time.
Only to reach a workshop. Coolant loss leads to overheating, and overheating warps the head.
Remove the belt and spin the pump by hand. Roughness or play confirms the bearing.
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.
