- ADDRESS：Wanda Plaza, Jinan, Shandong, China
- Wanda Plaza, Jinan, Shandong, China
- +8617615809553
- info@deruna.com
The WEICHAI WP12 Water Pipe Connector Group is a precision-engineered set of coolant distribution components that connect various cooling system hoses and pipes in WP12 heavy-duty diesel engines. As genuine WEICHAI Engine Parts, this water pipe connector group ensures reliable coolant flow between the engine block, cylinder head, radiator, water pump, and heater core across all WP12 variants from 336 HP to 550 HP.
The WEICHAI WP12 Water Pipe Connector Group is a collection of coolant distribution components installed throughout the engine cooling system. These connectors serve as junction points where coolant hoses and rigid pipes meet, allowing controlled flow of coolant between the engine block, cylinder head, radiator, water pump, and heater core. The group includes water outlet pipes, inlet connectors, sealing gaskets, mounting flanges, and threaded fittings.
Each connector in the WEICHAI WP12 Water Pipe Connector Group is manufactured from corrosion-resistant cast aluminum or high-grade brass alloy, providing excellent durability against thermal cycling and chemical attack from coolant additives. The components are precision-cast using single-piece technology, resulting in very high strength, excellent corrosion and oxidation resistance, and significantly reduced weight compared to traditional steel fittings.
The WEICHAI WP12 Water Pipe Connector Group incorporates advanced sealing features including integrated O-ring grooves, precision-machined sealing faces, and thread sealing structures. Some connectors utilize F-type stud sealing designs, which research has shown to achieve a water leakage failure rate of only 0.6%, effectively preventing coolant leaks without requiring sealant application. The cylinder head on WP12 engines adopts Top-Down cooling, and the water pipe connector group plays a key role in distributing coolant to critical hot zones.
Applications for the WEICHAI WP12 Water Pipe Connector Group include Shacman X3000/F3000/X5000, Sinotruk HOWO A7/T7H, Dongfeng KL heavy trucks, SDLG wheel loaders, XCMG excavators, marine WP12C engines, and stationary generator sets. The connector group is compatible with WP12 power outputs from 336 HP to 550 HP across Euro III, Euro IV, Euro V, and China VI emission standards. Common OEM part numbers include 612600060049, 612600060097, 612600060146, and 612600040153 for the thermostat housing/carrier.
Counterfeit water pipe connectors often use inferior aluminum alloys with porosity defects and inadequate sealing surface machining, leading to premature coolant leaks and engine overheating. Always source genuine WEICHAI WP12 Water Pipe Connector Group components from authorized distributors to ensure proper fitment, reliable sealing, and long-term durability in the harsh engine environment.
| NO. | Part NO | Description |
|---|---|---|
| 1 | 612600060049 | Water Pipe Connector / Outlet Pipe (WP12, Cast Aluminum) |
| 2 | 612600060097 | Water Pipe Connector (WP12, Alternate OEM Reference) |
| 3 | 612600060146 | Water Pipe Connector (WP12, Service Replacement) |
| 4 | 612600040153 | Thermostat Housing / Water Outlet Carrier (WP12/WD12/WD618, 6Hole/3Hole Mounting) |
| 5 | 1001862496 | Air Compressor Water Pipe (WP12, OEM 1714511-00330-001) |
| 6 | 612600081629 | Pipe Clamp Assembly (Water Pipe Mounting Bracket, WP12) |
| 7 | 612600080949 | Pipe Clamp Assembly (Alternate, WP12 Water Pipe Support) |
| 8 | 680340065 | Water Pipe O-Ring / Seal Ring (WP12/WD618, Coolant Connection) |
| 9 | 612630060032 | Thermostat Housing Cover (WP12 Engine, Cast Aluminum) |
| 10 | 612630060080 | Water Pump Assembly (WP12 Shanxi, Cast Iron, Complete with Connectors) |
The table above lists common service parts for the WEICHAI WP12 Water Pipe Connector Group. When replacing any water pipe connector, always install new O-rings (Part No. 680340065) to ensure a leak-proof seal. The cast aluminum connectors are manufactured using single-piece casting technology, providing high strength, excellent corrosion resistance, and weight reduction. Pipe clamp assemblies (612600081629, 612600080949) should be inspected for cracking or corrosion during every major service.
Our WEICHAI WP12 Water Pipe Connector Group components are cast from high-grade aluminum alloy using single-piece technology. This results in very high strength, excellent corrosion and oxidation resistance, and significant weight reduction compared to traditional steel fittings. The cast construction eliminates weld seams that could fail under thermal cycling.
Some connectors in the group utilize F-type stud sealing structures, which have been proven through Weichai engineering research to achieve a water leakage failure rate of only 0.6%. This advanced sealing design eliminates the need for sealant application, simplifying installation while providing reliable leak prevention.
All sealing surfaces on our WEICHAI WP12 Water Pipe Connector Group are precision-machined to achieve the required surface roughness specifications. This ensures proper sealing with O-rings and gaskets, preventing coolant loss and protecting the engine from overheating damage.
No modifications required for WP12 engines in Shacman, Sinotruk, Dongfeng, SDLG, XCMG, marine, and generator applications. Bolt-on replacement with factory-specified torque values and O-ring sizes. Available for Euro III, Euro IV/V, China VI, and marine variants.
Each WEICHAI WP12 Water Pipe Connector Group component undergoes dimensional inspection, casting porosity testing, pressure leak testing, and O-ring groove verification before dispatch. No porosity defects or machining errors are tolerated. IATF 16949 certified quality.
Worldwide shipping from regional warehouses. Free installation torque charts, O-ring replacement procedures, and troubleshooting guides provided with each order. Volume discounts available for fleet customers and engine rebuilders.
Unlike aftermarket connectors that use inferior casting materials with porosity defects and inconsistent sealing surface finish, our genuine WEICHAI WP12 Water Pipe Connector Group is manufactured to original equipment specifications with documented quality control. Each connector is cast using precision die-casting techniques with computer-controlled pouring temperatures to eliminate porosity and cold shut defects.
The cast aluminum material provides approximately 40% weight reduction compared to traditional cast iron fittings while maintaining excellent strength characteristics. The material is also highly resistant to corrosion from all coolant types, including OAT (organic acid technology), IAT (inorganic additive technology), and HOAT (hybrid organic acid technology) coolants.
Technical support includes water pipe connector installation procedures: inspect connector for casting defects, clean mating surfaces thoroughly, install new O-ring (680340065) lubricated with clean coolant, align connector properly, torque mounting bolts to 10-15 N·m for small connectors or 25-30 N·m for larger flanges, and verify no leaks by pressurizing the cooling system to 1.2 bar. Troubleshooting guides for coolant leaks (worn O-ring, cracked connector, improper torque) and overheating (blocked flow passages) are provided.
For fleets, sample testing is available. Order one WEICHAI WP12 Water Pipe Connector Group component for trial; volume pricing applies. Many customers report over 500,000 km trouble-free cooling system operation after replacing corroded or leaking original connectors with our genuine components. We stock complete connector sets and individual O-ring seal kits.
Also monitor for symptoms of cooling system problems: fluctuating temperature gauge, loss of cabin heater performance (no hot air at idle), coolant odor in the engine compartment, and white smoke from the exhaust (indicating coolant entering the combustion chamber). If the engine overheats, inspect all water pipe connectors first — a leaking connector is one of the most common causes of sudden coolant loss.
For severe-duty applications (mining, construction, marine), reduce inspection intervals to every 25,000 km (15,000 miles) or 250 operating hours. Marine applications also require additional corrosion checks — saltwater environments accelerate galvanic corrosion of cast aluminum connectors. Consider applying anti-corrosion coating to connector exteriors in marine applications.
When installing a new WEICHAI WP12 Water Pipe Connector Group component, ensure that all mounting surfaces are clean and free of old gasket material. Use a plastic scraper (not metal) to avoid scratching the sealing surface. Align the connector properly before tightening bolts to prevent cross-threading or O-ring damage. After installation, run the engine to operating temperature and inspect for leaks while the system is pressurized.
Maintain a logbook of all cooling system maintenance: dates of connector inspections, O-ring replacements, bolt torque verification, coolant changes, and any leak repairs. For fleet operators, tracking coolant consumption rates is a powerful predictive maintenance tool — a gradual increase in coolant consumption often indicates a developing connector seal leak long before visible drips appear.
In summary, the WEICHAI WP12 Water Pipe Connector Group features single-piece cast aluminum construction, advanced thread sealing technology, and precision-machined sealing surfaces. Whether you are rebuilding a Shacman X3000, Sinotruk HOWO, SDLG wheel loader, marine vessel, or generator set, choosing genuine water pipe connectors directly impacts cooling system reliability and engine protection against overheating.
For workshops performing in-frame overhauls, we recommend ordering the WEICHAI WP12 Water Pipe Connector Group components together with a complete cooling system service kit including O-rings (680340065), thermostat (612630060844 or 610800060597), water pump (612630060080), and all coolant hoses. This approach eliminates hidden failures and gives your customer a worry-free warranty period.
Our inventory includes both standard water pipe connectors for highway truck applications and heavy-duty variants for off-highway and marine applications. Standard connectors provide excellent service life for long-haul trucking, while marine variants feature enhanced corrosion protection for saltwater environments. We provide cross-reference support for part number verification — please provide your engine serial number for accurate matching.
We provide after-sales documentation including dimensional inspection reports, casting integrity certifications, material certificates (cast aluminum alloy composition), and installation torque specifications upon request. Every WEICHAI WP12 Water Pipe Connector Group component is packaged in protective foam-lined boxes to prevent damage during shipping. Bulk orders receive custom palletizing and export documentation assistance.
All specifications based on original WEICHAI WP12 engine data. Cross-check part numbers with engine serial number. The WEICHAI WP12 Water Pipe Connector Group includes OEM references 612600060049, 612600060097, 612600060146, 612600040153, 1001862496, and pipe clamp assemblies 612600081629, 612600080949. Always replace O-rings (680340065) and torque bolts to 10-15 N·m (small connectors) or 25-30 N·m (large flanges) during installation.
Related Products
If you have any questions about our products, services, or anything related to what we offer, please don’t hesitate to leave us a message—our dedicated team is always ready to provide prompt and helpful responses to address your concerns. What’s more, when you become our valued customer, we’re delighted to offer you complimentary catalog services, giving you access to detailed, up-to-date information on our full range of products, specifications, and offerings to help you make informed decisions.
We are a first-class heavy duty vehicles and spare parts supplier in China. which covers from engine, gearbox, cab, axle assemblies to main assembly accessories, electrical parts and other chassis parts like brake, clutch and steering parts.
A PROFESSIONAL CHINA TRUCK AND SPARE PARTS SUPPLIER
@Copyright DERUNA
