Our Story

Founded in 2011, Tianguan began as a dedicated supplier of aftermarket engine and machinery parts. Over the past decade, we have grown into a trusted provider of starter motors, alternators, throttle motors, fuel injectors, sensors, and other replacement parts, serving excavators, construction machinery, agricultural equipment, commercial vehicles, and diesel engines worldwide. Our commitment to quality, reliability, and customer satisfaction has made Tianguan a recognized name in the industry.

1 OEM-Quality Replacement Parts We supply OEM-quality replacement parts, including starter motors, alternators, throttle motors, fuel injectors, sensors, and other engine parts and diesel parts, ensuring reliable performance and long service life.

2 Wide Brand & Model Coverage Our products are compatible with major brands such as Komatsu, Cummins, Bosch, Caterpillar, Volvo, John Deere, and Perkins, covering a wide range of excavator parts, construction machinery parts, and diesel engines.

3 Stable Supply & Fast Delivery With strong production capacity and inventory, we guarantee stable supply and fast global shipping for aftermarket replacement parts, including starter motors, alternators, and fuel system components.

4 Competitive Pricing for Aftermarket Parts We offer cost-effective replacement parts with factory-direct pricing, helping customers save on diesel engine parts, excavator replacement parts, and engine components.

5 Strict Quality Control & Testing All diesel parts, engine parts, and excavator components undergo rigorous quality inspection to meet OEM standards and ensure reliability.

6 Flexible MOQ & Professional Support We support low MOQ, OEM/ODM customization, technical assistance, and responsive after-sales service for distributors, wholesalers, repair centers, and machinery service providers.