How do you guarantee product quality?

We conduct pre-production samples, final inspections before shipment, and 100% visual and function inspection on finished products.

What are the main markets for your products?

Our products are exported to North America, South America, Europe, Southeast Asia, the Middle East, Africa, East Asia, and Australia.

What is the material of this crankshaft?

The crankshaft is made of cast iron, available in US standard ductile iron or alloy grades.

Crankshaft for BMW N52b25 Engine 11210402531 E90 E91 E92 E93

Name: Crankshaft for BMW N52b25 Engine 11210402531 E90 E91 E92 E93
Brand: Guiyang Baiyun Alloy Casting Factory
SKU: 2177184915

Guizhou, ChinaGuiyang Baiyun Alloy Casting Factory

US$288.00

1-9 Pieces

US$236.00

10+ Pieces

Sample price:US$288.00/piece.Request sample

Product profile

Customization

Available

Application

Car

Certification

ISO 9001

Model NO.

n52b25

Warranty

12 Months

Engine Type

Gasoline

Material

Cast Iron

Engine

N52b25

N.W(Kg)

22kgs

Model

N52

Engine Code

BMW

Stroke

79mm

Main Journal Diameter

56mm

Crankpin Iournal Diameter

50mm

Length

606.5mm

Transport Package

Carton and Wooden Box

Specification

52*22*21

Trademark

STEM

Origin

China

HS Code

8409919990

Production Capacity

10000

Key features

20+ Years Manufacturing Experience: Professional development and production of engine crankshafts for over 20 years.

ISO 9001 Certified Quality: Passed ISO-9001 certification with 100% visual and function inspection for finished products.

One-Stop Production Capability: Complete in-house processes including melting, casting, heat treatment, machining, and packing.

High-Quality Material Options: Produces US standard ductile iron and alloy crankshafts that can replace forged steels.

Flexible Customization Services: Supports OEM/ODM, customization from samples, designs, and flexible minor adjustments.

Global Market Recognition: Exported for over 7 years with excellent quality recognized in North America, Europe, and Asia.

Strict Quality Assurance: Pre-production samples and final inspections before shipment to guarantee stable quality.

Fast Lead Time: Average lead time within 15 workdays for both peak and off-season periods.

Company profile

High Repeat Buyers ChoiceYears of Export ExperienceFull CustomizationManagement Certification

Guiyang Baiyun Alloy Casting Factory

Guizhou, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 25 years CertifiedNearest Port: Shenzhen PortAverage Response Time: ≤7.04h

AI-Powered supplier vetting

SummaryGuiyang Baiyun Alloy Casting Factory is a China-based, state-owned crankshaft manufacturer established in 1997, with reported operations dating to 1992 and more than three decades of crankshaft-material experience. It operates a 13,218 m² plant, has 84 employees, and reports annual productivity of 80,000 pieces across American, German, Japanese, and Korean series. The supplier holds an ISO 9001:2015 management-system certificate and reports 11–20 quality-control staff. It claims OE-manufacturer quality standards and a one-year/100,000-kilometer crankshaft guarantee, but the broader after-sales-service capabilities are not verified. R&D, customization, traceability, overseas infrastructure, and several operational controls remain insufficiently documented. A BV audit is recorded with an evaluation result of 0 and a stated validity period from April 28, 2024 to April 27, 2025; the meaning of the result is not defined in the provided data.

Supplier typeThe supplier is identified as Guiyang Baiyun Alloy Casting Factory, a state-owned Chinese company focused on crankshaft production for automotive aftermarket applications and auto/motorcycle parts. Its reported operating history spans more than three decades, indicating a specialized manufacturing profile rather than a general trading business.

CertificationsThe supplier reports an ISO 9001:2015 certificate. A BV audit is also recorded, but the audit result is listed as 0 without an interpretation, so the audit record cannot independently establish a positive compliance outcome.

After-Sales capabilityThe supplier states that its crankshafts are covered by a one-year and 100,000-kilometer guarantee for regular use and describes service to a global market. However, specific repair, replacement, response-time, or overseas support capabilities are not provided.

R&D capabilityThe supplier reports more than three decades of crankshaft-material research, production, and development, plus three years of total R&D engineer experience and a focus on high-end and modified-engine crankshafts. Specific new-product launches, R&D documentation, SDKs, 3D design, or other structured innovation outputs remain unknown.

Production capacityThe supplier reports a 13,218 m² manufacturing plant, 84 employees, and annual productivity totaling 80,000 pieces across four regional product series. These stated facilities and capacity figures provide explicit evidence of established production capability.