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Crankshaft Automotive Engine Parts. TS16949 Certification: Certified to meet international automotive quality management standards. Custom Made Service: Custom manufacturing available based on customer drawings or samples. Flexible MOQ: Minimum order is 1 piece if in stock, or 200 pieces if out of stock. Wide Model Range: Available for multiple BYD engine models including 371QA, 471ZQA, and 487ZQA. Diverse Material Options: Materials include 42CrMo and QT800-2/QT900-3 to suit specific design needs. Precise Specifications: Detailed stroke, journal, and weight data provided for each model reference.