Alternator for Toyota Sienna 3.5L 2017-2019 270600P420

Product Overview

This high-output 220A Alternator is a brand-new, premium replacement specifically engineered for the Toyota Sienna (2017–2020). It serves as a direct-fit replacement for the 3.5L V6 engine, matching original part number 27060-0P420. This unit is designed for heavy-duty electrical loads, providing significantly more power than standard units to support advanced electronics and towing accessories.

OE Part Numbers: Direct replacement for 27060-0P420, 27060-31410, and Lester 21278.

Vehicle Application: Precision-matched for the Toyota Sienna (2017–2020) and Toyota Highlander (2017–2022) with the 3.5L V6 engine.

Core Technology: Features a 100% high-purity Copper Motor for maximum electrical conductivity and superior thermal management in high-heat engine bays.

Technical Specifications

Electrical Power: Delivers a powerful 220 Amp charging current at a rated voltage of 14V (Standard 12V system).

Pulley Design: Equipped with a 6-groove serpentine multi-belt pulley for high-torque transfer and reduced belt slippage.

Mechanical Data: Standard Clockwise rotation with an Internal Fan and Internal Regulator for an exact "bolt-on" installation.

Build Quality: A robust unit engineered to meet or exceed Denso OE performance standards, backed by a 12-month warranty.

Key Performance Features

High Power Efficiency: Engineered for high power output while remaining fuel-efficient by reducing parasitic mechanical drag on the engine.

Acoustic Quality: Utilizes specialized internal balancing for "Mute-level" low noise performance, maintaining the refined driving experience of a premium minivan.

Heavy-Duty Durability: Certified to IATF 16949 and ISO 9001 standards, ensuring every unit is built for longevity under demanding electrical loads.

OE Numbers

Alternator Specifications

Alternator Detailed Applications

Wholesale & Manufacturing Advantages

Scalable Supply: With an annual capacity of 3 million sets, we provide a reliable supply chain for global distributors and high-volume wholesalers.

Customization (OEM/ODM): Full support for private-label branding, specialized materials, and customized packaging (Brand, Neutral, or Private Label).

Logistics: Flexible lead times ranging from 7 to 60 days with a standard Minimum Order Quantity (MOQ) of 100 units.

The New 220A Alternator is the top choice for a high-output replacement that balances heavy-duty performance with competitive wholesale pricing.

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.

Toyota 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

Toyota 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.

Toyota 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 Toyota Sienna 3.5L 2017-2019

Q1: Is part number 270600P420 a genuine Toyota part number? Is it specifically designed for the 2017-2019 Toyota Sienna (post-facelift of the third generation) equipped with the 3.5L V6 engine?

A: Yes, 270600P420 is a genuine Toyota Motor Corporation part number. It is designated for the third-generation Toyota Sienna (XL40 series) models from the 2017 mid-cycle facelift through the 2019 model year, which are equipped with the updated 3.5L 2GR-FKS V6 engine. This part number is likely different from the alternator used in pre-facelift Siennas (2011-2016) due to engine and electrical system updates. Therefore, accurately matching post-facelift (2017+) models is critical.

Q2: Is this product a brand new genuine part, a remanufactured unit, or an aftermarket part? For a relatively new premium MPV, how is its quality and source assured?

A: The product description "Alternator" does not specify the condition. Given the relatively recent vehicle age (2017-2019), market supply likely consists primarily of brand new genuine Toyota parts or high-quality remanufactured units produced/refurbished by the original supplier, Denso. Brand new genuine parts offer the highest compatibility and reliability assurance. High-quality remanufactured units are also a cost-effective and reliable option but must come from reputable brands. Buyers should carefully read the description or inquire with the seller to confirm if the product is "Genuine Toyota", "Denso Remanufactured", or something else.

Q3: After installing this alternator in a 2017-2019 Sienna, is any software programming or initialization required?

A: For the 2017-2019 Sienna equipped with an intelligent power management system, software registration or initialization is likely recommended after alternator replacement. While not as complex as coding required by some European brands, performing a "Generator Registration" or "Power Management System Initialization" procedure using Toyota's dedicated diagnostic tool (e.g., Techstream) is the recommended best practice. This helps the Engine Control Unit (ECU) correctly recognize the new component and optimize the charging strategy, ensuring stable system operation and potentially preventing stored historical fault codes. Consulting relevant service information or a professional before installation is advised.

Q4: Does the product include all installation accessories? For example, the pulley, belt, and mounting bolts?

A: Regardless of the product condition, it typically includes the alternator core only. All installation accessories, including the pulley, accessory drive belt (serpentine belt), belt tensioner, idler pulley(s), and all mounting bolts and brackets, must be reused from the vehicle's original parts in good condition. Installation may involve more steps due to the Sienna's relatively compact engine bay layout. Before installation, be sure to inspect the condition of the belt and tensioner and consider replacing these components if they have been in use for many years.

Q5: What is the warranty period for this product? For a family vehicle like the Sienna, is after-sales service reliable?

A: The warranty period depends on the product type:
Brand new genuine Toyota part: Usually comes with Toyota's standard parts warranty of 12 months / unlimited mileage.
High-quality remanufactured unit / Branded aftermarket part: Typically offers a limited warranty of 12 to 24 months unlimited mileage.
The Toyota Sienna has a large vehicle population in markets like North America, resulting in a mature parts supply chain and a well-developed after-sales service network. Buyers should choose authorized dealers or highly reputable suppliers and must obtain and retain the official proof of purchase, which should clearly state the part number (270600P420), purchase date, and applicable warranty terms, to ensure smooth processing of any potential future warranty claims.