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Fitment checkOEM number, engine model, and machine model confirmation.
Manual quotePrice, MOQ, stock, lead time, and replacement options.
Export supportPacking notes, mixed order support, and shipping details.
Product Details
Product Overview
This premium quality Weichai WP12 main bearing and connecting rod bearing set is engineered for heavy-duty diesel engines used in commercial trucks, construction machinery, and industrial equipment. Manufactured to OEM specifications, these STD (Standard) size bearings provide reliable performance and extended service life. We ship globally to major markets including North America, Europe, Southeast Asia, the Middle East, and Africa, ensuring fast delivery to ports and industrial centers worldwide.
Key Features & Benefits
Precision Engineered: Manufactured to exact Weichai WP12 specifications for perfect fitment and optimal oil clearance.
Superior Material Composition: High-strength steel backing with advanced aluminum-tin or copper-lead lining for excellent load-bearing capacity and wear resistance.
Enhanced Durability: Designed to withstand high operating temperatures and pressures common in turbocharged diesel engines.
Various Chinese-brand construction machinery and mining equipment
Year Ranges: 2008-present (WP12 engine production years)
Global Supply & Distribution
Worldwide Shipping: We ship to all major regions including North America, Europe, Asia-Pacific, Middle East, Africa, and South America.
Fast Delivery: Orders processed within 24 hours. Express shipping available to major ports and industrial centers.
Major Markets Served: USA, Canada, UK, Germany, UAE, Saudi Arabia, South Africa, Nigeria, Australia, Indonesia, and more.
Export Experience: Over 10 years of international trade experience with full compliance to export regulations.
Logistics Partners: DHL, FedEx, UPS, TNT, and sea freight for bulk orders.
Quality Assurance
Manufacturing Standards: Produced in ISO 9001 and TS 16949 certified facilities.
Material Certification: All bearings meet OEM material specifications and hardness requirements.
Testing: 100% dimensional inspection and surface finish verification before shipment.
Warranty: 12-month warranty against manufacturing defects from date of purchase.
Quality Control: Each batch is tested for proper clearance, hardness, and load-bearing capacity.
FAQ
Q1: Are these bearings compatible with my Weichai WP12 engine?
These STD size bearings are designed for standard crankshaft journals in Weichai WP12 engines. They fit most WP12 variants including WP12.336, WP12.375, WP12.400, WP12.430, and WP12.460. Always verify your engine model and crankshaft condition before ordering. If your crankshaft has been reground, you may require undersize bearings (0.25mm or 0.50mm).
Q2: What is the recommended installation procedure?
Installation should be performed by a qualified diesel mechanic. Key steps include: (1) Clean all bearing surfaces and oil passages thoroughly, (2) Check oil clearance using Plastigage (spec: 0.08-0.15mm for main bearings, 0.05-0.11mm for rod bearings), (3) Apply clean engine oil to bearing surfaces before assembly, (4) Tighten main bearing bolts to 230-250 Nm and rod bolts to 180-200 Nm, (5) Verify crankshaft rotation is smooth after installation.
Q3: How can I distinguish between genuine and counterfeit bearings?
Our bearings are manufactured to high standards with clear markings. Look for: (1) Consistent surface finish without scratches or burrs, (2) Proper part number and size marking on each bearing shell, (3) Correct wall thickness within 0.005mm tolerance, (4) Packaging with product labels and batch numbers. We recommend purchasing from authorized dealers for guaranteed quality.
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