PT Indo Traktor Utama

Faced with unpredictable demand for spare parts, PT Indo Traktor Utama implemented Slim4 to improve planning accuracy and support a more data-driven supply chain.

PT Indo Traktor Utama is part of the Indomobil Group, one of the largest automotive groups in Indonesia. Operating under the Heavy Equipment Division, the company serves the mining, transportation, agriculture and logging sectors.

As an authorised dealer for five major global brands (Renault Trucks, SDLG, Manitou, Kalmar and Mantsinen), PT Indo Traktor Utama operates a 3S business model (Sales, Service and Spare Parts). Alongside selling heavy equipment units, the company provides after-sales services and spare parts support through a nationwide network of more than 60 branches.

Given the critical role of spare parts availability in customers’ operations, inventory management is essential. While some parts are supplied via principals’ local distribution centres, a significant portion still needs to be imported, adding complexity to planning and fulfilment.

Challenges

In the heavy equipment business, demand is highly unpredictable. Equipment operates continuously in the field and may require urgent repair at any time, meaning customers expect immediate response and rapid availability of spare parts.

PT Indo Traktor Utama faced several key challenges:

• Unpredictable demand driven by field operations.
• Ensuring the right parts, in the right quantity, at the right location, at the right time.
• Coordinating inventory planning across the branches.
• Managing inventory calculations manually in Excel using historical data and field inputs.
• Limited visibility of excess stock and slow-moving items across the network.

Objectives

To sustain high service levels while gaining tighter control over inventory, PT Indo Traktor Utama launched a supply chain transformation project. To improve planning accuracy across its entire branch network, the automotive wholesaler partnered with Slimstock.

Results

After implementing Slimstock’s innovative supply chain planning platform, Slim4, PT Indo Traktor Utama achieved clear operational and strategic improvements.

“From a performance perspective, Slim4 has already delivered strong results. The number of active stock items increased by approximately 250%, and our days of inventory improved significantly, from 177 to 68. These are solid achievements. However, we do not see this as the endpoint. There is still room to become better,” says Heri Sunaryo, Head of Inventory Logistics & Supply Chain

Improved stock utilisation and redistribution

Slim4 enabled the company to identify excess and slow-moving stock and generate transfer order suggestions to position inventory where it was most needed. This zoning and redistribution approach significantly enhanced stock utilisation, which increased to over 100% after implementation.

“With many branches and fluctuating demand, items that were previously fast-moving can become slow-moving, and vice versa. Slim4 helps us identify these shifts and enables stock reallocation to branches with higher demand,” highlights Heri.

Expansion of active stock items

As planning accuracy improved, PT Indo Traktor Utama was able to grow its active assortment. Heri explains, “The impact is clearly visible. We enhanced our stock management, and the number of active stock items increased significantly, from around 1,600 items at the early stage of implementation to approximately 3,700 items today, more than double.”

And continues, “This shows that as service levels improved, our inventory became more efficient. Although the total inventory value increased, our sales also grew, enabling days of inventory to decrease.”

Operational and management impact

For the operations team, Slim4 replaced complex manual work with a more advanced, dynamic and multifactor planning system, reducing reliance on spreadsheets. “Slim4 is far more comprehensive and dynamic than Excel, as it considers many different factors when generating recommendations, greatly supporting operational decision-making,” Heri adds.

“From a management perspective, we have seen clear improvements in key indicators such as days of inventory. As inventory levels become more controlled, overall operational efficiency improves. Lower stock levels also reduce capital tied up in inventory while maintaining strong service performance,” indicates Heri.

Customer impact and business growth

Beyond internal operational improvements, the implementation of Slim4 has also influenced customer purchasing behaviour and business expansion. PT Indo Traktor Utama already conducts surveys for some customers, where feedback has been positive. More importantly, the company has observed tangible changes in purchasing patterns.

“Our active stock items increased significantly, from around 1,600 items to approximately 3,700 items, an addition of about 2,100 items. While this may not reflect direct customer satisfaction metrics, it clearly shows business development and expansion. This improvement indicates that customers are more satisfied because we are better prepared to provide the items they need, when they need them.” Highlights Heri.

Next steps

Looking ahead, PT Indo Traktor Utama is advancing toward a more proactive, predictive approach to spare parts management. The company is increasingly leveraging digitalisation and IoT technologies, including telematics data from field equipment. By monitoring operating hours, asset age and usage patterns, PT Indo Traktor Utama aims to:

• Predict component replacements based on lifecycle data.
• Proactively recommend spare parts to customers.
• Enable active and predictive selling instead of reactive fulfilment.

“We’re satisfied with Slim4 today, and we’re also strengthening our own capabilities by integrating more digital, online and data‑driven processes. We expect Slimstock to progress in the same direction. A strong, automated system reduces manual work and allows our teams to focus on strategic decisions and delivering better service to customers,” Heri concludes.