- ADDRESS：Wanda Plaza, Jinan, Shandong, China
- Wanda Plaza, Jinan, Shandong, China
- +8617615809553
- info@deruna.com
The WEICHAI WP12 Oil Dipstick Assembly is a precision oil level measuring component specifically designed for the WP12 diesel engine platform. This complete assembly includes the graduated dipstick rod, integrated handle, and sealing elements required for accurate daily oil level verification. Proper lubrication is essential for engine longevity, and the WEICHAI WP12 Oil Dipstick Assembly provides fleet operators and technicians with a reliable, easy-to-read method for monitoring oil levels before every start. For genuine replacement parts and complete engine service components, always source from verified WEICHAI Engine Parts to guarantee OEM fitment, consistent quality, and long-term reliability.
The WEICHAI WP12 Oil Dipstick Assembly is a dedicated oil level measurement tool that allows operators to quickly and accurately check the engine oil level in the WP12 diesel engine. The assembly consists of a graduated metal dipstick rod with clearly marked low (L) and high (H) indicators, a durable handle for easy extraction, and an integrated sealing cap that prevents dirt ingress and oil mist escape. Located on the crankcase near the oil filter housing, the dipstick provides direct access to the oil reservoir for routine maintenance checks, typically performed before engine start or after a short shutdown period.
The dipstick rod is manufactured from cold-rolled spring steel (Type 301) with a corrosion-resistant zinc-phosphate or black oxide coating, offering excellent durability across a wide temperature range (-35°C to 120°C). The measurement markings are laser-etched or mechanically stamped at precise intervals corresponding to the WP12 engine’s safe oil level range. For the WP12 engine, the oil volume difference between the low mark and the high mark on the WEICHAI WP12 Oil Dipstick Assembly is approximately 3.0 liters, providing operators with a clear visual reference for topping up. The rod length is calibrated specifically for the WP12 oil pan configuration, ensuring that the low mark accurately reflects the minimum safe oil level.
The WEICHAI WP12 Oil Dipstick Assembly is designed for the 11.596-liter inline-six WP12 engine used in heavy trucks (HOWO, SHACMAN, FOTON), construction machinery (loaders, excavators), marine propulsion, and stationary generator sets. The assembly is compatible with all WP12 variants from Euro III through Euro V emission standards, as well as China VI engines. The handle is typically molded from glass-filled nylon in a bright yellow or orange color for high visibility, with finger grips for secure handling even when wearing work gloves. The handle is permanently bonded to the metal rod using chemical-resistant adhesive that withstands exposure to engine oil, diesel fuel, and common workshop solvents.
In addition to the basic dipstick rod and handle, the complete WEICHAI WP12 Oil Dipstick Assembly includes a high-temperature O-ring or rubber seal at the tube entrance. This seal prevents oil mist from escaping the crankcase, which would otherwise lead to gradual oil loss and engine bay contamination. The dipstick is inserted into a guide tube that routes it into the oil pan. Replacement dipstick assemblies are available as complete units or as individual components (rod only, handle only, or seal only). Genuine assemblies include a traceable part number and batch code for quality assurance.
For marine applications, the WEICHAI WP12 Oil Dipstick Assembly includes a special calibration that accounts for the engine’s operational tilt when the boat is on plane. Marine dipsticks are marked with a “heeled” or “floating” scale. In stationary generator applications, the dipstick assembly is identical to the truck version, as the engine operates on a level surface. For construction equipment that operates on uneven terrain, the standard dipstick calibration remains valid because oil level checks are performed on level ground. Always confirm your specific application when ordering replacement components to ensure correct calibration.
Every genuine WEICHAI WP12 Oil Dipstick Assembly undergoes visual inspection for marking accuracy, handle bond strength testing, and O-ring seal integrity verification. Counterfeit dipstick assemblies often use inferior materials such as uncoated mild steel that rusts, inaccurate stamping that leads to improper oil levels, and handles that become brittle and crack after exposure to under-hood heat. A broken handle can separate during use, leaving the dipstick stuck inside the guide tube and requiring extensive disassembly for removal. Always source from authorized distributors to ensure safety and accuracy.
| NO. | Part NO | Description |
|---|---|---|
| 1 | 612600012064 | Oil Dipstick Assembly (Complete Rod + Handle + Seal) |
| 2 | 612600012034 | Oil Dipstick Assembly (with Silicone Seal Ring) |
| 3 | 612600012206 | Dipstick Rod Only (Without Handle) |
| 4 | 1000723232 | Dipstick Assembly (Short Version for Euro V / Deep Sump) |
| 5 | 1451111-00226-001 | Oil Dipstick OEM Cross-Reference (Original Equipment) |
| 6 | 612600010533 | Dipstick Tube Cap with Integrated O-Ring |
| 7 | 612600012208 | Dipstick O-Ring Seal (High-Temperature, Set of 5) |
| 8 | 612600012209 | Dipstick Handle Only (Yellow Glass-Filled Nylon) |
| 9 | 612600150382 | Oil Pan Assembly with Dipstick Port (Complete) |
| 10 | 612630061000 | Dipstick Tube Rubber Connector Hose |
Our WEICHAI WP12 Oil Dipstick Assembly is manufactured from cold-rolled spring steel with zinc-phosphate corrosion protection. The handle is molded from glass-filled nylon that resists cracking at under-hood temperatures up to 120°C, ensuring long service life.
Each dipstick is laser-etched with low and high marks calibrated specifically for the WP12 oil pan configuration. The 3.0-liter capacity between marks matches factory specifications, providing accurate oil level indication for safe engine operation.
We offer the WEICHAI WP12 Oil Dipstick Assembly as a complete kit including dipstick rod, handle, and high-temperature O-ring seal. Individual components are also available for partial replacements when only one part requires renewal.
Correct rod length and handle orientation ensure direct bolt-on installation for WP12 engines in HOWO, SHACMAN, FOTON, and other Chinese heavy trucks. No modifications or cutting required.
We stock marine-calibrated dipsticks for WP12 marine engines that account for operational tilt. Generator versions with standard calibration are also available. Specify your application when ordering to receive the correct calibration.
We maintain substantial stock of WEICHAI WP12 Oil Dipstick Assembly components in warehouses across Asia, Europe, and the Americas. Express shipping options minimize downtime for fleet operators.
Unlike generic aftermarket dipsticks that use uncoated mild steel prone to rusting and inaccurate stamping, our WEICHAI WP12 Oil Dipstick Assembly is manufactured to original equipment specifications. The dipstick rod features a durable yellow zinc dichromate or black oxide finish that resists corrosion from acidic engine oil (total acid number up to 3.0 mg KOH/g). The handle is ultrasonically welded to the metal rod, preventing separation even after thousands of insertion cycles. This attention to detail ensures that your WP12 engine receives accurate oil level readings for its entire service life.
Furthermore, our dipsticks include a high-quality silicone or FKM O-ring that maintains sealing flexibility across temperature extremes. Many low-cost dipsticks use nitrile rubber O-rings that harden and crack within 100,000 km, allowing oil mist to escape and causing gradual oil loss. Our O-rings are rated for continuous service at 120°C and intermittent exposure to 150°C, ensuring the seal remains effective for the life of the engine.
Technical documentation included with the WEICHAI WP12 Oil Dipstick Assembly provides correct dipstick insertion depth (fully seated in the guide tube), oil level reading procedures (engine off, level surface, wait 5-10 minutes after shutdown), and a troubleshooting guide for common issues such as oil level reading inconsistencies (often caused by a bent dipstick or worn O-ring) and difficulty inserting the dipstick (usually due to a kinked guide tube or debris in the tube).
For large fleet customers, we offer sample evaluation: order one WEICHAI WP12 Oil Dipstick Assembly for trial installation. After validation, volume pricing applies. Many return customers report that our dipstick assemblies last the full life of the engine (over 1,000,000 km) without handle cracking or marking wear, compared to low-cost alternatives that often fail within 200,000 km.
Beyond the checklist above, pay attention to how the dipstick feels when inserting and removing. Excessive friction or a grinding sensation indicates debris or sludge buildup inside the guide tube. Use a tube brush or a clean rag wrapped around a stiff wire to clean the guide tube interior during oil changes. For engines operating in extremely dusty environments (mines, quarries, agricultural applications), consider cleaning the guide tube every 10,000 km.
When performing an oil change, always remove the dipstick and leave it out during the drain and refill process. This allows the oil pan to vent, promoting faster draining. After refilling with the specified oil quantity (typically 28-32 liters for a dry WP12 engine, depending on oil pan configuration), start the engine, run for 30 seconds, stop, wait 5 minutes, then check the level using the WEICHAI WP12 Oil Dipstick Assembly. Add small amounts of oil until the level reaches the high mark. Never rely solely on the specified fill quantity — always verify with the dipstick.
If the dipstick becomes stuck in the guide tube, do not use excessive force. Apply penetrating oil around the seal area and gently twist while pulling. If the handle separates, use pliers to grip the exposed metal rod and remove it. After removal, inspect the guide tube for damage. Preventative replacement of the dipstick O-ring every 200,000 km eliminates most sticking issues. For marine applications, more frequent O-ring replacement (every 100,000 km or 2,000 hours) is recommended due to salt air exposure.
Finally, maintain a service log for the WEICHAI WP12 Oil Dipstick Assembly recording any replacement events, observed wear, and calibration checks. This data helps predict when components are approaching end of life. For fleet operators, standardized replacement of dipstick O-rings every 200,000 km and complete dipstick assemblies every 500,000 km eliminates oil level reading errors that can lead to engine damage from under-filling or over-filling.
In summary, the WEICHAI WP12 Oil Dipstick Assembly is an often-overlooked but essential component for any WP12 engine maintenance program. Its simple design belies its importance — inaccurate oil level readings due to a worn or incorrect dipstick can lead to catastrophic engine failure. Whether you are performing routine oil changes on a HOWO dump truck, maintaining a fleet of SHACMAN tractors, or servicing a WP12 marine propulsion engine, using a genuine dipstick assembly ensures that you have accurate information to make critical oil level decisions.
For workshops performing engine rebuilds, we recommend ordering the WEICHAI WP12 Oil Dipstick Assembly together with a new oil pan gasket and oil filter. The dipstick assembly is the last component installed before filling with oil, and a new assembly ensures that the rebuilt engine receives accurate oil level readings from day one. We provide installation guides with torque specifications and orientation marks for all WP12 engine variants.
Our inventory includes both standard-length dipsticks for on-highway trucks and extended-length versions for deep-sump marine oil pans. We also offer custom dipstick marking services for non-standard oil pan configurations, though lead times apply. For urgent repairs, we stock pre-assembled dipstick assemblies that include the rod, handle, and O-ring in a single box, ready for installation.
We also provide after-sales documentation including material certificates and dimensional inspection reports upon request. Every WEICHAI WP12 Oil Dipstick Assembly is packaged in a foam-lined box to prevent rod bending during transit. Bulk orders receive custom export crating and documentation.
All specifications are based on original WEICHAI WP12 engine data. Actual product dimensions may vary by sub-model (Euro III, Euro V, marine, construction, etc.). Always verify part numbers against your engine’s serial number plate before ordering.
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
