The Commission presented Europe’s new 2030 climate targets, including a proposal for amending the Renewable Energy Directive, on 14 July 2021. It sought to increase the 32% target to at least 40% renewable energy sources in the EU’s overall energy mix by 2030.

DOLZ’s robust investment and growth strategy play a significant role in the energy transition and the systematic decarbonization, aiming for net zero by the year 2040.

Our purpose gives us a vision to aspire to, but turning it into reality requires a clear plan. To build on this progress, Dolz has set a bold goal: sourcing 100% of our energy from renewable sources by 2028. This transition follows a structured plan:

• 2025: 25% of our total energy consumption will come from renewable sources, marking the first major milestone in our transition.
• 2026: We will double this share to 50%, significantly reducing our dependence on non-renewable energy.
• 2027: Our renewable energy usage will rise to 75%.
• 2028: We will achieve 100% renewable energy—two years ahead of our initial target.

By accelerating our shift to clean energy, we are reinforcing our long-term commitment to sustainability, lowering our carbon footprint, and contributing to a greener future for the automotive industry.

Beyond our own operations, we are also working with our global suppliers and partners to drive emissions reductions throughout our supply chain, addressing all ‘Scopes’: 1, 2 and 3 and reinforcing sustainability as a core value of our business.

Why Renewable Energy Matters in Manufacturing?

Manufacturing is a highly energy-intensive sector, relying heavily on electricity and fuel for production, transportation, and facility operations. This dependence on non-renewable energy sources drives up operational costs and increases environmental impact.

Antonio Tarí, Chief Operating Officer, emphasizes the significance of this milestone, stating: ” This achievement reflects our commitment to reducing our environmental impact while ensuring operational efficiency and competitiveness in an increasingly eco-conscious industry”.

To make progress on reducing Scope 3 emissions, which include supply chain emissions, we are employing a number of complementary strategies.  These include actively engaging with suppliers and incorporating sustainability requirements.

Measuring Our Impact: CDP and Sustainability Reporting

Transparency and accountability are fundamental to our sustainability strategy. That’s why Dolz actively participates in the Carbon Disclosure Project (CDP), a global initiative assessing companies on their environmental impact and climate strategies. By aligning our renewable energy transition with CDP reporting, we ensure our commitments are measurable, verifiable, and aligned with international standards.

Through CDP, we track key metrics such as greenhouse gas emissions, energy efficiency improvements, and the long-term benefits of our green energy investments.

Industrias Dolz holds the ISO 14001:2015 Environmental Management System (EMS) certification at its Almazora (Spain) plant, which spans 25,000 m². This certification reflects our commitment to environmental responsibility and is seamlessly integrated with our ISO 9001 Quality Management System, reinforcing our dedication to both quality and sustainability. By adhering to these rigorous frameworks, Dolz ensures continuous improvement, regulatory compliance, and the adoption of best practices in all our processes.

By embracing continuous innovation and responsible business practices, we aim to provide premium aftermarket solutions that contribute to a more sustainable world, ensuring compliance with sustainability regulations.

La entrada Dolz Sustainability Milestone: 25% Renewable Energy se publicó primero en Industrias Dolz.

What does the water pump impeller do?

In a water pump, the impeller is the part that distributes coolant throughout the cooling system of the vehicle. And it must be properly designed to provide the correct system pressure for all driving conditions.

The rotating vanes on this small, round disc assist in moving the coolant through the cooling circuit and thus cool the vehicle’s engine. When this component fails, the coolant supply is cut off, causing the engine to overheat. As you know, the health and efficiency of your vehicle’s engine requires an optimal temperature. Without it, it could cause serious and irreparable damage.

The impeller is made up of several curved blades. The coolant flows through the turbine along its axis and escapes between the fins along the circumference.

Keep reading: Types of automotive water pumps

Water pump impellers: Types

All water pumps are not the same. Some are made with plastic impellers while others have metal.

The impellers manufactured in DOLZ are made from injected plastic, cast iron or aluminum passivated, depending on the original OEM design. Besides, factors such as diameter, number and height of the fins, and other specifications determine the type of impeller.

So, let’s get to know which are the two main types of water pump impellers:

1. Open turbine

An open impeller has blades that are open on both sides and also lacks a protective cover. It is a type of turbine that, as a general rule, is found in smaller water pumps and that also are not subject to much stress. Although there is also the possibility of finding them in larger water pumps.

2. Closed turbine

On the other hand, the closed impeller is completely covered at the front of the part and offers maximum resistance. They are generally the most popular type of turbine for large pumps that move coolant, although smaller water pumps can also be found. Thus, thanks to its design, axial thrust is reduced, which can increase the useful life of the bearing.

How to know if a water pump impeller is malfunctioning?

Though impeller failure is not common, it can happen when the impeller blades slip when the engine is started. Impeller corrosion can also occur from unsuitable or deteriorated coolant. So, when you have a bad impeller, you can have a lot of troubles.

If your impeller fails, the pump will be unable to provide coolant to the engine, causing it to overheat. You may be able to avoid serious difficulties if you notice that your water pump is failing early on. However, if you overlook a bad impeller in time, the consequences might be disastrous for your engine.

There are five symptoms that your cooling system needs attention:

• Pump leakage

• Slow re-priming

• Unusual noises or vibrations

• Overheating

• Reduced pump flow

Article of interest: Failing car water pump: Signs

It’s also possible for the impeller to become loose on the shaft, so although the impeller looks well, it doesn’t pump anything!

Dolz TIP: You will pay the price later if you keep your water pump impeller going with patchwork repairs and makeshift remedies, and you have to pay it later. While you may be under pressure to keep production going, these temporary repairs will not prevent the pump from failing.

Think of it like insurance and protecting your investment. For that, DOLZ recommends replace the water pumps and prevent future problems for your vehicle.

If you need further information or have any technical question with the water pump impeller, please contact us and our team will help you.

Fresh Stock! September’s New-to-Range: DOLZ New-to-Range September 25

La entrada The importance of a water pump impeller se publicó primero en Industrias Dolz.

Why is the water pump so important for the engine?

The water pump is the heart of the thermal loop, since it forces the coolant flow through the loop, according to the engine requirements. Water pumps can fail, and when they do they put your engine at risk of a severe issue.

Each engine has a water designed to assure the best thermodynamic performance; the water pump performance & dimensions must be under control to ensure the right assembly and cooling to the engine.

How to effectively identify a bad water pump

If you’re concerned about your car’s water pump, there are some common signs to look out for:

• Leaking coolant: If there are coolant drops on the front of the engine, inspect the vehicle pump properly to trace the source. It could be the gasket or the seal on the water pump shaft.
• Overheating: This is a serious condition that can be trigged due to a failing water pump. If you notice your engine is overheating it means the heat generated is not being cooled.
• Squealing/Whining noise: The noise may be an indication of a fault and could be caused by a loose drive belt or a worn-out water pump that is no longer properly functioning.

Article of interest: Failing car water pump: Signs

Water Pump Questions About Dynamic seal

The dynamic seal is the effective sealing of the water pump. It is one of the critical components of the water pump since it guarantees optimum tightness and durability of the water pump. The main different materials used for the ring are Hard Carbon (HC), Aluminum Oxide or ceramic (Alox) and Silicone Carbide (SiC).

Dolz uses HC/SiC (95% of the DOLZ range includes a Silicon Carbide Dynamic Seal) that guarantees optimum tightness and durability of the water pump.

Considered as the best-balanced solution, and even better than SiC/SiC in terms of friction, noise, and lubrication. Being the only limitation of the HC/SiC type when the cooling system is contaminated. This dynamic seal offers an excellent thermal conductivity and durability.

About impellers

Why does Dolz offer different impeller types?

The impellers manufactured by DOLZ are made from injected plastic, cast iron or aluminum passivated depending on the original OEM design. Besides, depending on the diameter, number and height of the fins, and other specifications, it will determine the type of impeller.

Impellers made of aluminum are more robust in term of mechanical and thermal resistance and have a good behavior against chemical agents, specially when we compare it with steel impellers.

About Spindle bearings

Water pump bearings can support both large axial and radial loads and come in two different types:

• “Ball-Ball” type (Symetric or asymmetric contact/Angular or radial contact) consisting of only balls. It is used to support a high load index for a limited construction space.
• “Ball-Roller” type (re-inforced) always respecting OE design or improved for a better resistance. This design offers a much higher radial load capability of the roller row.

Can my water pump leak be fixed?

As we touched on briefly, coolant leaks from the water pump are a clear sign that it’s time to replace the pump (before it fails completely and causes more components to fail along with it).

How often should I change my vehicle’s water pump?

These questions about the water pump depend on various factors such as mileage, make, model, etc. An automotive water pump can easily last from 60,000 to 100,000 miles. Here at DOLZ we always recommend change the timing belt and flush the coolant when it’s time to replace the water pump to ensure continued consistency of the Timing System.

Always refer to your car’s manual for specific recommendations and follow the original manufacturer’s fitting instructions.

Dolz water pumps: High quality standards

Dolz offers quality water pumps you can trust. With a competitive that covers over 95% of the current European parc.

Main characteristics of the range

• DOLZ range includes 1300+ references, among which 990 for cars applications & 18% only for Asian applications.
• 95% coverage of the European car parc.
• 95% of the DOLZ range includes a Silicon Carbide Dynamic Seal, that guarantees optimum tightness and durability of the water pump.
• Water pumps designed according to OE specifications.
• Automatized manufacturing process.

Get in touch for all information you need. Including our different catalogues, technical bulletins, certifications and more.

La entrada Common questions about Water Pumps se publicó primero en Industrias Dolz.

Industrias Dolz has released 9 new references across its product portfolio, all of them already available for distributors and workshops, and can be found in the main electronic catalogs such as TecDoc and Sofinn.

+4 Water pumps

New part numbers for water pumps suitable for: BMW, Mercedes-Benz, DAF and VOLVO.

• 1 new variable water pump:DOLZ: B262V; GGT: PA13482

• 3 new truck water pumps:

DOLZ: M673; D330; V504 
GGT: PA12985; PA13261; PA13446

Based on the extensive knowledge of our experts, at Dolz we have developed a range that is characterized by its reliability, efficiency, and ease of assembly. More than 1,300 water pumps that guarantee the main European and Asian brands coverage and strengthen our leadership position in the market. Therefore, you can be confident that we will have the parts you need when you need them.

 +3 Timing belt kits

New timing belt kits with water pump suitable for: Seat, Volkswagen and Toyota applications.

• DOLZ: KD230 (A179 water pump); KD231 (A189 water pump); KD256 (T229 water pump)
• GGT: KPA20230 (PA10967 water pump); KPA20231 (PA11161 water pump); KPA20256 (PA12543 water pump)

Dolz Kits are designed to provide the driver with the highest performance in any type of condition. Offering a competitive range of timing belt kits that already exceeds 230 part numbers. This range includes the Best-Selling references in Europe and all the necessary components delivered in one single package to guarantee a professional assembly.

Related content: Buying Guide / DOLZ-GGT Timing Belt Kits

+2 Timing chain kits

New part numbers for SMART 0,6 and 0,7 Petrol.

• DOLZ: SKCS040 / SKCS040C
• GGT: KCSPA040 / KCSPA040C

Dolz offer one of the most comprehensive Timing Chain Kit ranges in the Aftermarket.  These kits include all the necessary parts to get you back on the road.

More and more cars are fitted with a timing chain. When purchasing a Timing Chain Kit, it is essential to take into account the quality of the materials. For this reason, Dolz Kits have rigorous validation procedures that guarantee a quality OE equivalent, maintaining all its features for maximum precision and durability.

Click and check out the New-To-Range: June 2023

Why choose Dolz/GGT?

Once again at Dolz we combine the latest technology with coordinated planning and flexible production, which allows us to provide our customers with the best possible service and quality.

About us

Our experience of almost 90 years in the aftermarket sector allows us to offer innovative solutions and a competitive range of products that meet the highest quality standards.

With a global presence in more than 70 countries worldwide, Industrias Dolz has 3 manufacturing plants located in Spain (Castellon), Argentina (Buenos Aires) and China (Shouzou) and different commercial offices.

Having a full implemented manufacturing processes ‘under one roof’, we can guarantee the total quality of our products, since all processes have quality validations, supplies and reduced lead-times. It has also been possible thanks to the implementation of the Lean Manufacturing method in our facilities.

You must be interested: …All in Dolz. In House production end to end.

All DOLZ/GGT’s new references are in stock and ready to be shipped. Visit www.idolz.com for further information on all our products.

La entrada Dolz-GGT New-to-Range: June 2023 se publicó primero en Industrias Dolz.

Why is it important to choose the right water pump brand?

When it comes to picking a water pump brand, it’s important to notice not all water pumps are made equal. 

As such, a reliable company translates into a reliable supply of high-quality water pumps that: 

• Are made with premium materials and components, and through quality production processes 
• Presents the maximum durability 
• Minimizes maintenance issues and needs

What should you look at when looking for a water pump brand?

1. Are water pumps their main focus?

When a company specializes in a particular product and those related to it, it’s likely to provide a higher quality, as their main processes and resources are aimed at said product. 

2. Does the company offer water pumps that include all the necessary accessories?

For water pumps to work properly, there are some elements that should not be overlooked, such as the need to include a gasket for its correct installation or the indications and technical specifications in its replacement process. For this reason, a trusted brand of water pumps will always supply the water pump together with the gasket, if necessary, screws if required and will deliver it with the assembly instructions.

3. Do they have an in-house manufacturing process?

In-house manufacturing provides an extra guarantee for brands to be able to meet established timelines.

At the same time, in-house production of water pumps may also be a mark for strict quality controls, as the company is able to monitor performance and results and apply the needed changes in a flexible manner. 

4. Do they invest in innovation?

While water pumps have been around for a while now, the possibilities for enhancing their functioning and efficiency evolve as new materials and processes are made viable. Picking the right water pump brand means looking at their R&D department and seeing tangible examples of innovation in their production, as well as their adaptation to the 4.0 Industry.

5. Does the brand have good customer service?

A good customer service implies the company is ready to accommodate the needs and requirements of their clients, but also can provide guidance in terms of operation, maintenance, or replacement of parts. 

6. Do they offer a guarantee?

First things first, a high-quality water pump brand will provide a durable and reliable system. However, they’re also able to offer a guarantee for their products and can provide a realistic life expectancy around their water pumps. 

7. What is their experience?

Long-running experience in manufacturing means a water pump brand has been able to meet client expectations as well as collect insight on the best manufacturing methods. 

Additionally, a long experience is also typically a synonym of enhanced support for clients, translating into helpful tips on how to install a water pump or how to find out when a water pump needs to be changed, along with other useful advice.

8. Can they offer client testimonials?

Positive client testimonials can provide insight into how well a water pump brand adjusts to company needs: you can search for online reviews or ask directly for testimonials or referrals in order to find out about their past services.

9. Do they have any certifications? Do they perform any equipment testing?

Having complied with ISO 9001 quality standards and ISO 14001:2015 environmental certification is often a sign that a water pump brand takes measures to guarantee premium quality in their equipment. 

Other proof might involve the performance of water pump leakage tests, guaranteeing that their equipment is sealed doesn’t leak under proper working conditions.

10. What are their installations like?

The best water pump brand will typically have investment in comprehensive production installations in order to provide a reliable supply to their clients. 

Keep reading: Top 5 mistakes to avoid when installing the water pump

Dolz, your trusted water pump brand

Industrias Dolz is a Europe-based water pump brand specializing in the production of water pumps that are innovative, efficient, reliable and sustainable. 

Capable of offering a worldwide supply, we offer a wide range of water pumps and water pump kits to meet different technical requirements all by employing the highest-possible materials. As such, we’re able to provide:

• In-house production for guaranteed continuity. This makes Industrias Dolz At one of the few companies in the sector presenting an entire in-house manufacturing process end to end.
• Experience. Industrias Dolz’s journey as a water pump brand started 90 years ago. With more than 5.5 million units manufactured every year, we provide our clients an unparalleled expertise.
• Regulation. We follow the most demanding quality standards, including the ISO certifications mentioned above. Being all our products equivalent to OE Quality (art. 1 Block Exemption Regulation EC 1400/2002).
• Extensive catalog. Our product catalog includes more than 1,300 PN’s for automobiles and industrial vehicles. This means our production covers 97% of the European vehicle fleet and 80% of the truck fleet.

• Innovation. Our R&D department is able to develop more than 50 new references each year, guaranteeing Industrias Dolz remain market leaders.

Learn more about our reputation as a reliable, global water pump brand and discover how we can help you access the best water pumps.

La entrada 10 questions to ask when choosing a water pump brand se publicó primero en Industrias Dolz.

Currently on the market you can find different types of water pumps such as mechanical water pumps, variable water pumps, electric water pumps…

Mechanical water pumps had relied solely on engine motion. However, the current trend of refrigeration on demand has come to evolve this type of pump, offering variable versions and technological advantages that allow more efficient operation.

This article reflects an overview of the different versions that Industrias Dolz offers of its water pump OE 04L121011 and shows in detail their differences in terms of design and functionality.

Water pump versions OE 04L121011

Dolz offers three versions of the A255 water pump on the market. On the one hand, we find its two mechanical options: A255 and A255E, the latter being an ‘economy’ version as it has an IAM design in its internal bearing. 

On the other hand, there is the third and most innovative version, the variable water pump A255V and which we will later discover its particularities in design and behavior.

OE 04L121011 is suitable for more than 350 applications, also from Audi, Seat, Skoda and Volkswagen models with TDI diesel engines manufactured since 2009, including vans such as the Volkswagen Caddy, Multivan, California or Transporter, up to applications for the most modern models such as Volkswagen T-Roc, Golf 7, Seat Arona or Ateca, Skoda Kodiaq or Karoq, Audi A3, A4, etc.

Mechanical version: A255 y A255E

Mechanical water pumps are the most common on the market.

The importance of the water pump has generated the continuous search for alternative technologies to be more and more efficient. Therefore, given the evolution of this component of the cooling system, there are increasingly more complex water pumps on the aftermarket that have more electronics and more complex designs. 

Although it is true that all of them, regardless of their version, are designed to fulfill the same function: Internal combustion engine cooling.

A255 and A255E mechanical water pumps have a turbine that, with the help of the motion of the crankshaft, projects the coolant towards the engine block. They are connected to a pulley by a bearing shaft that is driven through the timing.

Variable version: A255V

Unlike mechanical pumps, a variable water pump supplies coolant based on the needs of the engine.

A255V water pump therefore allows a more precise control of the flow throughout the cooling circuit. And this is due to its electric actuator based on the on/off principle that adapts the capacity to the different motor operating conditions.

Differences about Design

In terms of design, there are two main differences. Let’s see the picture below:

A255V, unlike the mechanical version, it has a ring around the impeller, which receives the order from the vehicle’s control unit to go up or down, allowing the impeller to run or not the coolant.

Depending on the point of operation, the actuator pushes the adjustable ring in or releases it again.

On the other hand, there is a difference in the water pump bearing. While A255 and A255V have an external bearing, the ‘economy’ version has a different design incorporating an internal bearing. 

Read more: “Discovering the main water pump components“

Assembly instructions

For A255 and A255E (mechanical version) please unscrew the electric switch of the original water pump (OE) and screw it into the specific housing as shown in the images.

Dolz, water pumps with the latest technology

DOLZ produces and distributes water pumps for passenger cars and industrial vehicles for the aftermarket since 1934.

Dolz water pumps are ISO 9001:20015 certificate, which means quality 100% tested.

Regarding the quality control phases, the tightness test using a calibrated leak instrument to verify the air pressure drop is within the defined tolerances and thus prevent cavitation.

A process as simple as it is fundamental and for which, among many other factors, DOLZ water pumps are the pumps with the highest quality on the market.

Among our extensive range of water pumps, you will find:

• Water pumps for passenger cars
• Water pumps for industrial vehicles
• Auxiliary electric water pumps
• Variable water pumps
• Electric water pumps

We manufacture more than 5.5 million units per year over a range which comprises more than 1,300 PN’s.

For further information on any of our product lines, receive commercial information or technical product specifications (including assembly notes), CLICK HERE.

…All in Dolz!

La entrada Types of water pumps: A255 – A255E – A255V (OE 04L121011) se publicó primero en Industrias Dolz.