Connecting Rod 3939407 for Cummins QSB4.5 B4.5 Engine Spare Parts

Guangzhou Qianchuan Machinery Parts Co., Ltd. is a dedicated supplier of spare parts for construction and industrial machinery. From our base in Guangzhou, China, we work with customers across Southeast Asia, Latin America, East Europe, the Middle East, and other global markets.

We provide parts for KOMATSU, CATERPILLAR, HITACHI ,KOBELCO, DOOSAN, SUMITOMO, YANMAR, KUBOTA, SDLG, XCMG, ZOOMLION, and others.

Our goal is straightforward:
To supply the right parts with reasonable rate, provide service you can count on.

What We Offer

• A Full Range of Parts
  We support excavators, forklifts, cranes, loaders and generator— with a wide stock of engine spare parts ,hydraulic seal kit act .
• Support for Small and Large Orders
  We offer low minimum order quantities and work closely with customers who are building their brand to entering markets.
• Fast Delivery
  We keep key items in stock and can ship urgent orders within one working day.
• Customer-Focused Service
  We believe in long-term cooperation, and we’re here to reduce your business risk by offering reliable support and follow-up service.

Our Approach

We believe that trust is built through action — not just words. That’s why we continue to invest in better materials, stricter quality control, and efficient systems from sourcing to delivery.

We do not aim to be the biggest. We aim to be dependable.

Our products are well recognized in China and increasingly trusted by international buyers who need a supplier that’s responsive, honest, and consistent.

Looking Ahead

We welcome inquiries from companies — whether you’re an importer, distributor, repair shop, Our team is ready to assist with your parts list, shipping needs, or product questions.

If you are looking for a supplier who answers quickly, delivers on time, and values long-term cooperation, we would be glad to work with you.