Alternator for Mazda 3 2.0L 2.3L 2004-2009 A3TG1391A

Product Overview

This is a premium, OE-quality replacement Alternator specifically engineered for the first-generation Mazda 3. It is a high-demand component for global distributors and wholesalers specializing in Japanese passenger vehicle parts.

Part Numbers: Direct replacement for A3TG1391A, LF18-18-300, and LF18-18-300R.

Vehicle Application: Precision-matched for the Mazda 3 (2004–2009) with 2.0L and 2.3L L4 engines.

Core Technology: Built with a 100% high-purity Copper Motor to ensure maximum conductivity, superior thermal resistance, and long-term reliability.

Technical Specifications

Electrical Output: Delivers a stable 12V and 90 Amps, meeting all factory electrical load requirements.

Mechanical Configuration: Features Clockwise (CW) rotation, an Internal Fan (IF) for efficient cooling, and an Internal Regulator (ER).

Pulley Type: Equipped with an S6 (6-Groove) serpentine pulley for perfect belt alignment.

Installation Data: Standard 9 o'clock plug orientation; total unit weight is approximately 14.59 lbs.

Key Performance Features

Efficiency: Designed to be fuel-efficient with low energy consumption, reducing the mechanical load on the engine while maintaining high power output.

Silent Operation: Engineered with "Mute-level" low noise technology to prevent mechanical whine and ensure a refined driving experience.

Durability: Built to withstand the high-vibration environment of inline-four engines.

OE Numbers

Alternator Specifications

Alternator Detailed Applications

Wholesale & Manufacturing Advantages

Certified Quality: Produced in facilities following IATF 16949, ISO 9001, and ISO 14001 standards, ensuring every unit meets international automotive quality benchmarks.

Massive Capacity: With an annual capacity of 3 million sets, we provide a reliable and scalable supply chain for global importers.

Full Customization: We offer OEM/ODM services, including specialized materials, custom branding, and private-label packaging to suit your local market strategy.

Comprehensive Support: Backed by a 12-month warranty and flexible lead times (7-60 days).

Logistics & Order Summary

Minimum Order (MOQ): 100 Units

Warranty: 12 Months

Packaging: Brand, Neutral, or Fully Customized Packaging.

Alternator for Mazda 3 2.0L/2.3L

Alternator Supplier | High-Output, OE-Standard Production for Bulk Buyers

Elecdura Alternator Certification: CE, ISO Compliance, Plus Local Market Support

Elecdura alternators are manufactured in full compliance with leading international standards, enabling seamless market entry worldwide. We hold key certifications, including CE for product safety in the European market, ISO 14001 for environmental management, and ISO 45001 for occupational health and safety. These demonstrate our commitment to reliable performance, sustainable production, and high workplace standards.If your target market requires specific local approvals, our dedicated team will proactively coordinate the certification process to obtain all necessary documentation, ensuring your supply chain remains efficient and fully compliant. We are here to support your regulatory needs.

ISO14001

ISO45001

CE

Elecdura Alternators are made in automated factories with certified precision

The factory is equipped with advanced machinery to ensure consistent quality and high production efficiency throughout the alternator manufacturing process. Its modern facilities enable both large-scale production and adherence to stringent quality control standards.

Bulk Quantity of Alternator Rotors High-volume production of core rotating components, ready for final assembly.

Finished Alternators in Bulk Order Quantities Complete alternator units prepared for large-volume export and timely delivery.

OEMODM Alternator Showcase for Branding Explore customized solutions and branding opportunities for your market.

Industrial Alternator Assembly Line Witness precision manufacturing and efficient production capacity for reliable alternator supply.

Alternator Sample Display for Quality Inspection Evaluate product finish, craftsmanship, and key specifications firsthand.

Stator Assemblies Produced at Scale Consistent quality in bulk stator production, ensuring stable alternator performance.

Mazda Alternator Quality: 30-Stage Testing & 100% Pre-Shipment Inspection

Development Experiment

Incoming Inspection

Field Inspection

Outgoing Inspection

Establish strict inspection system and process for each process from development, experiment and shipment of finished product.

The development, production and test of each starter must pass 30 kinds of test.

Before shipment, 100% check of the appearance, size and nut to prevent any defects from leaking out

Mazda Alternator Supplier Strong Export Capability and Stable Supply

Elecdura ensures large-scale, stable supply of alternators to global markets. Each pallet and carton is meticulously packaged to export standards for secure transport. Leveraging years of export expertise and consistent demand from long-term clients, we provide reliable delivery assurance and supply chain continuity for bulk orders.

Mazda Alternator Supplier Partnership Market Success

Elecdura collaborates with leading distributors and brands worldwide — helping our partners dominate their local aftermarket. Through professional sourcing, customized product development, and close market research, we've supported clients in becoming the Top 1 aftermarket suppliers in South America(in some categories). Our integrated marketing and supply capabilities make us more than a factory — we're your strategic growth partner.

Successful client collaboration showcased at trade fair booth

Distributor partnership meeting for aftermarket product planning

Elecdura with international buyer in Brazil Exhibition

Elecdura assisting South American client in aftermarket development

Elecdura team and partners at international auto parts exhibition

Warehouse of Elecdura global partner displaying stocked

FAQ-Alternator for Mazda 3 2.0L 2.3L 2004-2009

Q1: Is this alternator with part number A3TG1391A truly compatible with both the 2.0L and 2.3L engine variants of the 2004-2009 Mazda 3?

A: Yes, A3TG1391A is a universal replacement part number designed to cover most 2.0L (LFX) and 2.3L (L3X) gasoline engine variants of the first-generation Mazda 3 (BK platform). Its physical mounting points, pulley specifications, and basic electrical connectors are standardized. However, the output amperage may vary (commonly 110A, 120A, or 130A) depending on the model year and vehicle equipment. Therefore, while it will physically fit, to ensure proper electrical performance, it is recommended to check the label on the old alternator for its amperage rating and prioritize a product that matches the original specification.

Q2: Is this product a genuine OEM part, an OE-equivalent, or a remanufactured unit? What about its quality, durability, and brand assurance?

A: There are various options on the market. The part number A3TG1391A typically corresponds to high-quality remanufactured units or new replacement parts built to OE specifications. Brand new genuine parts are more expensive. Reliable units will incorporate new core wear components such as bearings, brushes, rectifiers, and voltage regulators, and undergo rigorous performance testing. When sourcing, choosing reputable brands (such as Bosch, Denso, Mitsubishi Electric – suppliers to Mazda – or their certified remanufacturers) is key to ensuring long-term reliability and stable voltage output.

Q3: Is the installation process a simple "plug-and-play"? After replacement, is it necessary to reset the vehicle's computer or perform any software adaptation?

A: The physical installation is a straightforward "plug-and-play" replacement. For the 2004-2009 Mazda 3, the alternator control is relatively conventional, and specialized software programming or ECU adaptation is typically not required. However, after disconnecting the battery for replacement, some of the vehicle's electronic control units (e.g., audio system, power windows, the engine ECU's idle learning values) may lose their memory. Therefore, the standard procedure is: after installation and reconnecting the battery, start the engine, allow the systems to self-check, and you may need to perform a simple "idle relearn" procedure (letting the engine run to operating temperature and idle for several minutes). It is also good practice to use an OBD-II scanner to clear any historical fault codes that may have been triggered during the process.

Q4: Does the product come with all necessary installation hardware? For example, do I need to prepare bolts, the serpentine belt, or the electrical connector separately?

A: Typically, the product includes the alternator core only. Critical installation accessories such as mounting bolts, washers, the serpentine accessory belt, and the electrical connector all need to be reused from the original vehicle parts, unless they are damaged. It is strongly recommended to inspect the condition of these original accessories before installation, especially the belt and belt tensioner. If the belt shows signs of aging/cracking or the tensioner is weak, this is an opportune time to replace them to ensure the new alternator operates under optimal conditions.

Q5: What is the warranty period for the product? What is the return and exchange policy? How are issues handled if they arise after installation (e.g., unusual noise or failure to charge)?

A: For such alternators, the industry standard warranty is commonly 12 months unlimited mileage. Reputable suppliers provide clear warranty terms covering defects in materials and workmanship. However, please note that damage caused by improper installation (e.g., excessive belt tension damaging bearings), use of incompatible accessories, or other vehicle electrical system faults (e.g., battery short, wiring issues) is typically not covered. If problems arise after installation, the supplier will usually require proof of purchase and a description of the issue, and may require the unit to be returned for inspection. Taking photos and comparing the old and new parts before installation is an effective way to prevent future disputes.