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SINOTRUK HOWO SITRAK WEICHAI WP12 WP13 ENGINE Water Pump Sub-Assembly 1008167626
The water pump drives the forced circulation of coolant between the engine block and the radiator; it serves as the "heart" of a heavy-duty truck's cooling system, and its operating condition directly determines whether the engine might overheat and suffer from cylinder scoring.In the event of a coolant leak or abnormal bearing noise, the technician only needs to remove the front pump assembly-which includes the pulley, bearing, water seal, and impeller-without having to detach the rear pump housing from the engine block.
When to Replace
1. Crystallization or Dripping at the Weep Hole (Inspection Hole): If you observe pink or green antifreeze crystals around the weep hole-or notice continuous dripping-it indicates that the water seal is completely worn out. The pump assembly must be replaced promptly; do not wait until the coolant has leaked out entirely or the bearing has seized.
2. Bearing Play and Humming Noises: A rhythmic, frictional humming noise emanating from the pump assembly while the engine is idling is a warning sign. You can check this by manually wiggling the pulley; if noticeable play is felt, the bearing is damaged. If left unaddressed, the impeller may become misaligned, potentially striking and damaging the rear housing
Weichai 1008167626 Water Pump Sub-Assembly Overhaul BOM List
| No. | Weichai/Sinotruk Part No. | Part Name (English) | Qty | Maintenance & Replacement Suggestions |
|---|---|---|---|---|
| 1 | 1008167626 | Water Pump Sub-Assembly (12PK) (Water Pump Head) |
1 pc | Core Replacement Part: Cast iron 12PK multi-groove pulley main body; includes integrated shaft bearing, high-strength mechanical seal, and closed impeller. |
| 2 | 1001550993 (Common Ref.) |
Water Pump O-Ring Seal | 1 pc | Must-Replace Consumable: Positioned at the joint between the pump head and the engine's water pump rear housing to prevent coolant leakage. |
| 3 | Varies by truck model (e.g., 12PK1215, etc.) |
12PK V-Ribbed Belt (Water Pump Drive Belt) |
1 pc | Highly Recommended: High-strength drive belt powering the water pump; replace simultaneously if the old belt shows cracks, fraying, or hardening. |
| 4 | 1000109961 (Ref. Spec.) |
Hexagon Socket Head Bolt M8×35 | As req. | Replace if Damaged: Used to secure the pump head to the rear housing. Replacing with new genuine high-strength bolts is advised if old ones are rusted or cross-threaded. |
| 5 | - | High-Temp Silicone Gasket Maker | 1 tube | Auxiliary Consumable: Must clean off all old sealant from the housing, then apply evenly along with the new O-ring to ensure a flawless seal. |
| 6 | Heavy-Duty Spec | Heavy-Duty Premium Engine Coolant | As req. | Must-Replace Consumable: Disassembling the pump head will drain a large volume of coolant. It is ideal to fully flush and renew the entire cooling system. |
DETAILS
| DESCRIPTION | Water Pump Sub-Assembly | PART NUMBER | 1008167626 |
| WEIGHT | 5kg | VOLUME |
240 mm × 220 mm × 210 mm |
| TRUCK MOLDE | SINOTRUK | QUALITY | Copy,High Copy, OEM,Original |
| MOQ | 1 | WARRANTY | 1 year |
| PAYMENT | TT/WESTEN UNION | SHIPMENT | by air/sea/railway |
| BRAND | SINOSACHS | PLACE OF ORIGIN | JINAN CITY,CHINA |
| STOCK | IN STOCK | APPLICABLE SITE | ENGINE |
| PACKAGE | Carton/Woodenbox | PORT OF LANDING | Qingdao Port,China |
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