Core Product Functions
612600900029 cylinder block is a key diesel engine part, matched with Weichai WP10/WP12 and SINOTRUK HOWO power units. It fits long-distance trucks, mixers, mining vehicles and medium generators-needing stable operation and high load. As engine base, it integrates bores, crankshaft/camshaft holes, oil/cooling ducts, carrying pistons, rods and crankshafts. It bears piston impact and high-temperature combustion load, ensuring component accuracy and engine rigidity. Precision bores fit pistons, reduce friction; optimized cooling/lubrication dissipate heat, avoid leakage, meet national Phase IV/V emission standards.
Compatibility & Interchangeability
①Applicable Vehicles: SINOTRUK HOWO T7H/T5G, Shaanxi Delong X5000, Futian Auman GTL, Beiben V3M, mixers, mining vehicles, generators with Weichai WP10/WP12 diesel engines.
②Adaptable System: Matches original piston, crankshaft, camshaft, cylinder head and lubrication/cooling/fuel systems. No bracket, pipeline or wiring modification; direct installation after replacement.
③OE Reference Number: 612600900029
④Interchangeability: Follows original size, bore spacing, mount holes and bolt torque. Directly replaces original block, shortening maintenance and reducing labor costs.
⑤Value-added Service: Our team verifies fit via engine model, displacement and chassis number. Provides pre-installation check, bore cleaning and post-installation leak guidance to avoid faults.
Key Technical Parameters
|
Parameter Name |
Specification |
|
Applicable Engine Model |
Weichai WP10/WP12 series diesel engines |
|
Number of Cylinders |
6-cylinder, inline vertical layout |
|
Cylinder Bore Diameter |
126mm, precision honed |
|
Cylinder Bore Spacing |
145mm, original design |
|
Overall Dimensions |
820×340×480mm (L×W×H) |
|
Overall Weight |
210kg (excl. accessories) |
|
Max Working Temperature |
430℃ |
|
Oil Passage Diameter |
28-32mm |
|
Cooling Channel Diameter |
22-26mm |
|
Crankshaft Hole Coaxiality |
≤0.015mm |
|
Cylinder Bore Roundness |
≤0.008mm |


Materials & Craftsmanship
Core Materials
The block uses high-strength nodular cast iron (QT450-10), with better toughness, impact resistance and heat dissipation than ordinary alloy cast iron, bearing engine load. Bores have high-chromium wear-resistant liners, extending service life. Crankshaft/camshaft holes have wear-resistant bushings, reducing long-term wear. Bolt holes have reinforced design, ensuring stable high-torque fastening.
Surface Treatment
Outer surface has electrophoretic anti-rust coating, with strong adhesion, corrosion and high-temperature resistance, adapting to engine compartment environment. Bore inner wall has plateau honing, improving oil storage and reducing piston friction. Mounting surfaces are precision ground, ensuring flatness and tight fit. Oil/cooling ducts have high-pressure flushing, ensuring unobstructed flow.
Production Craftsmanship
Advanced lost foam casting ensures dense structure, no pores or sand inclusions. Bores, crankshaft/camshaft holes are processed by CNC centers, ensuring accuracy and coaxiality. Liners are press-fitted by automatic machines, uniform pressure. Each block passes high-pressure water test, air tightness test and dimensional inspection before delivery.
Quality Grade & Inspection
①Quality Grade: OE-equivalent, complying with Weichai WP10/WP12 standards. Passed 1500-hour extreme load test, stable performance, adapting to high altitude, cold and dust.
②Inspection Items: High-pressure water test (20MPa), air tightness, bore roundness, coaxiality, dimensional and appearance checks.
③Quality System: Factory passed IATF16949 and ISO9001, full-process quality control from raw materials to delivery.
④Batch Tracking: Each block has laser-engraved OE, batch and production date. Records kept ≥3 years, full traceability.
Service Life & Performance
①Average Service Life: ≥4.5 years (450,000km), longer than original, matching WP10/WP12 maintenance cycle, reducing replacement and costs.
②Performance Advantages: Nodular cast iron resists deformation; precision bores reduce friction, improve efficiency; optimized cooling/lubrication prevents overheating and wear.
③Environment Adaptability: Withstands 430℃ high and -45℃ low temperature, no deformation. Corrosion-resistant, adapts to coastal/dusty areas, stable in ≥4,000m plateau.
Fault Improvement & Replacement Value
Common Fault Optimization
Aiming at original faults-bore scuffing, crankshaft hole wear, leakage, blockage and deformation-we optimized materials and processing. Nodular cast iron, high-chromium liners and precision machining solve these faults, avoiding power reduction, high fuel consumption and cylinder pulling.
Maintenance & Replacement Value
Direct on-site replacement, no engine modification, shortening maintenance by 35%. Fully compatible, no extra debugging, quick to use. Stable performance reduces downtime, improves efficiency. High accessory interchangeability, lower user costs.
Packaging & Marking
Packaging Configuration
Heavy-duty shockproof packaging: inner foam, middle EVA pad, outer reinforced carton. Block fixed by steel frame, avoiding transport collision. Bores, oil/water ports sealed by plastic plugs. Accessories (liner, gasket, bolt) independently packaged.
Marking Specifications
Outer Carton: Printed with OE, product name, engine model, quantity, batch, weight, warning signs. Export has multilingual (English, Russian, Arabic) instructions.
Product Marking: Laser-engraved OE, bore diameter, max temperature and batch number, wear-resistant, clear.
Customization: Neutral packaging available; supports LOGO customization. Carton printing, language and size adjustable by market needs.
Supply Capacity
①Inventory: Sufficient 612600900029 stock, covering all WP10/WP12 models, immediate spot delivery for urgent needs.
②MOQ: 2 units; bulk discounts (≥40 units); large orders' production cycle adjustable by delivery time.
③Delivery: Spot orders shipped in 24-48hrs; bulk in 9-13 days. Foreign trade provides customs clearance, optional transport.
④Stability: Stable raw material supply and production lines, monthly output ≥3,200 units, no delivery delays.
Certification & After-sales Guarantee
①Certification: IATF16949 and ISO9001 certified. Third-party test reports available for import/export (strength, sealing, service life).
②Quality Guarantee: 27-month warranty. Free return/replacement for non-human faults (cracking, deformation, leakage).
③Technical Support: 24-hour online team, providing installation guidance, fault diagnosis and maintenance training.
④Return Policy: We bear freight for quality faults; free replacement for transport-damaged products.
Frequently Asked Questions (FAQ)
Q1: Compatible with all WP10/WP12?
A1: Yes, all Weichai WP10/WP12 6-cylinder engines. Provide model for precise check.
Q2: Installation key points?
A2: Clean block/liner; press-fit liner by standard; replace gasket; fasten bolts by torque/sequence; leak test; idle 5 mins after startup.
Q3: Foreign trade customization?
A3: Yes, neutral/LOGO packaging, multilingual manuals and full export documents.
Q4: Bore scuffing during warranty?
A4: Provide fault photos, batch number; free replacement + freight for quality issues.
Maintenance & Precautions
Installation Requirements
Check for cracks/deformation; clean bores/ducts; press-fit liner correctly; replace gasket; fasten bolts evenly; connect pipes tightly; leak test before use.
Regular Inspection
Check leakage every 20,000km; inspect bore wear every 60,000km (replace liner if needed); clean ducts every 45,000km; re-tighten bolts every 120,000km.
Storage Requirements
Store in dry, dust-free warehouse, away from corrosives; place horizontally; seal bores/ports; 12-month unopened shelf life; apply anti-rust oil after opening.
Replacement Tips
Replace for leakage, overheating, power loss, noise or bore scuffing. Replace liner/gasket/bolts together; leak test after replacement.
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