GM Series High-Performance Crankshaft Pulley – OEM 12551138

Prioritizing Operational Safety and Powertrain Reliability

Ensuring the structural integrity and long-term safety of your engine is the core objective of this high-performance crankshaft pulley (OEM 12551138). Meticulously designed for GM series vehicles, this harmonic balancer plays a critical role in neutralizing torsional vibrations. By stabilizing the crankshaft’s rotation, it prevents internal engine fatigue and ensures that all belt-driven components operate with maximum reliability.

Product Specifications

• OEM Part Number: 12551138
• Vehicle Compatibility: Optimized for GM Series (Chevrolet, GMC, Buick)
• External Diameter: 191 mm
• Center Hole Diameter: 41.4 mm
• Total Height: 34 mm

A Decade of Specialized Engineering in Crankshaft Pulleys

For over ten years, our production center has been at the forefront of the automotive aftermarket, specializing in the R&D and global distribution of engine vibration control components. Our team of highly professional engineers combines deep industrial knowledge with mature manufacturing technology to produce pulleys that meet the most demanding international standards.

Our Manufacturing Advantage

• OEM & ODM Services: We offer flexible customization solutions, ranging from specific material enhancements to complete private-label branding for our global partners.
• Professional Expertise: Our staff consists of technical veterans who understand the complexities of engine dynamics and precision automotive metallurgy.

Advanced Metallurgy and Precision Manufacturing Standards

The exceptional durability of the 12551138 pulley is achieved through a combination of superior material science and rigorous manufacturing protocols. Every component we produce is a result of long-term technical accumulation and a commitment to precision engineering.

Material & Engineering Excellence

• High-Grade Materials: We utilize High-Strength Ductile Iron (QT500-7) for the main body and EPDM (Ethylene Propylene Diene Monomer) for the dampening ring, providing unmatched resistance to heat, aging, and mechanical stress.
• Precision Equipment: Every unit is crafted using Advanced CNC Machining Centers, ensuring that every dimension—from the outer diameter to the center hole—is 100% accurate.
• Dynamic Balancing: To guarantee a vibration-free driving experience, all products undergo Electronic Dynamic Balancing tests to ensure perfect weight distribution and eliminate potential crankshaft wear.

Inquiry Data Required for Professional Quoting

To ensure the most accurate quote and technical support, please provide the following details when contacting us:

• Vehicle Information:
  • vehicle nameplate
  • Engine Nameplate and Model
  • Vehicle Brand and Production Year
• Product Details:
  • OEM Part Number (12551138)
  • Required Purchase Quantity
• Logistics & Packaging:
  • Domestic Shipping: Warehouse location and contact person for your local freight forwarder.
  • International Shipping: Destination Country, City, Full Address, and Zip Code.
  • Packaging Requirements: Please specify if you need standard export packaging or customized branded packaging.