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This high-output Buick Lucerne alternator and Cadillac DTS alternator is a premium, brand-new 150A replacement specifically engineered for 2006–2011 models. It directly replaces OE numbers 20843302 and 25755840, supporting the extensive electrical systems of these luxury sedans.
Part Numbers: Direct replacement for Hollander 11178, OE 20843302, 25755840, 15288861, 15200110, and 15288861AD.
Vehicle Application: Precision-matched as a Buick Lucerne alternator (2006–2011) and Cadillac DTS alternator (2006–2011) with the 4.6L V8 Northstar engine.
Core Technology: Built with a 100% high-purity Copper Motor to ensure maximum conductivity, superior heat dissipation, and long-term durability.
Technical Specifications
Electrical Power: Delivers a robust 150 Amp charging current at 12V, optimized for high-load vehicle electronics.
Mechanical Configuration: Features Clockwise (CW) rotation with an Internal Fan (IF) and Internal Regulator (IR) for a compact and efficient "bolt-on" installation.
Pulley Design: Equipped with a 6-Groove Serpentine Pulley to maintain precise belt tension and minimize slippage.
Build Data: The unit weighs approximately 13.46 lbs and features a heavy-duty aluminum housing for optimal thermal management.
Key Performance Features
Fuel-efficient design with low energy consumption, quiet "Mute-level" operation, and proven reliability for extreme engine bay temperatures—making this Buick Lucerne alternator and Cadillac DTS alternator the ideal OE-quality replacement for 20843302 and 25755840 applications.
OE Numbers
11178
20843302
25755840
104210-4370
104210-5990
Alternator Specifications
Item Weight
13.46 pounds
Dimensions
9.65 x 8.07 x 6.89 inches
Current Level
150 Amp
Voltage
12 Volt
Rotationv
CW
Grooves
6-Groove Pulley
Regulator
IR
Fan Type
IF
Alternator Detailed Applications
Make
Model
Year
Buick
Lucerne
2006-2011
Cadillac
DTS
2006-2011
Wholesale & Manufacturing Advantages
Certified Quality: Our OE quality 20843302 alternator and 25755840 units are produced in facilities holding IATF 16949, ISO 9001, and ISO 14001 certifications, meeting the highest global automotive standards.
Scalable Supply Chain: With an annual capacity of 3 million sets, we offer consistent inventory for Buick Lucerne alternator wholesale distributors and serve as a trusted Cadillac DTS alternator supplier for international partners.
Customization (OEM/ODM): We provide full support for custom branding and private-label packaging on all OE quality 20843302 alternator and 25755840 orders.
Risk Mitigation: Every unit is backed by a 12-month warranty with flexible lead times (7–60 days).
Logistics & Order Summary
Minimum Order (MOQ): 100 Units
Dimensions: 9.65 x 8.07 x 6.89 inches
Packaging: Brand, Neutral, or Fully Customized Packaging.
The OE quality 20843302 alternator (also replacing 25755840) is an excellent choice for Buick Lucerne alternator wholesale buyers and any Cadillac DTS alternator supplier seeking reliable, factory-spec replacements for these GM luxury models.
Alternator Supplier | High-Output, OE-Standard Production for Bulk Buyers
Elecdura Alternator Certification: CE, ISO Compliance, Plus Local Market Support
Elecdura alternators, including the OE quality 20843302 alternator and 25755840 models, are manufactured in full compliance with leading international standards, enabling seamless market entry worldwide. As a trusted Cadillac DTS alternator supplier, we hold key certifications including CE, ISO 14001, and ISO 45001, demonstrating our commitment to reliable performance, sustainable production, and high workplace standards for every Buick Lucerne alternator wholesale order.
If your target market requires specific local approvals for your OE quality 20843302 alternator or 25755840 shipments, our dedicated team will proactively coordinate the certification process to obtain all necessary documentation, ensuring your supply chain remains efficient and fully compliant. For Buick Lucerne alternator wholesale distributors and Cadillac DTS alternator supplier partners, we are here to support your regulatory needs.
ISO14001
ISO45001
CE
Elecdura Alternators are made in automated factories with certified precision
As a leading Cadillac DTS alternator supplier, our factory is equipped with advanced machinery to ensure consistent quality and high production efficiency throughout the alternator manufacturing process. Our modern facilities enable both large-scale production to meet Buick Lucerne alternator wholesale demands and strict adherence to stringent quality control standards for every unit.
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.
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.
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
Q1: Is "11178" the core part number for this alternator? Is it fully compatible with both the 2006-2011 Buick Lucerne and Cadillac DTS?
A: Yes, "11178" is likely the manufacturer's (e.g., ACDelco, Remy) base part number or catalog number, designating an alternator designed for a specific GM front-wheel-drive luxury sedan platform. This platform (GM's G-platform) includes both the Buick Lucerne and Cadillac DTS, which share the 4.6L V8 engine (either the Buick variant or the Northstar in the DTS). Therefore, a properly designed "11178" alternator can theoretically fit both models. However, final confirmation must be based on the vehicle VIN or the complete OEM part number from the original alternator to ensure the mounting bracket, connector, and output amperage (which may vary by trim) are an exact match.
Q2: Is this product new, remanufactured, or an OE-supplied part? What is its quality grade, given the semi-luxury/luxury nature of these Buick and Cadillac models?
A: Products sold under the number "11178" are typically high-quality remanufactured units or new aftermarket parts built to OE specifications. Brand new genuine parts would be labeled "Genuine GM" or "ACDelco Professional/Gold". For such luxury sedans, it is strongly recommended to choose remanufactured or new units from reputable brands (e.g., ACDelco Gold series, Remy Heavy Duty). These products utilize quality bearings, rectifiers, and voltage regulators, undergoing rigorous testing to ensure quiet operation and stable voltage output, meeting the high demands for electrical system smoothness and reliability in luxury vehicles.
Q3: After installing this alternator, is any software reset or programming required for the vehicle?
A: For the 2006-2011 Buick Lucerne and Cadillac DTS, their charging systems are relatively conventional. The alternator typically communicates with the PCM via analog signals rather than complex digital bus systems. Therefore, dedicated software programming is usually not required after replacement. However, best practice is: after disconnecting the battery for replacement, use an OBD-II scanner to clear any historical fault codes that may have been triggered by the power loss, and allow the vehicle to complete a full ignition-on self-test and idle relearn cycle to ensure all modules (e.g., body control, audio memory) function properly.
Q4: Does the product include all installation accessories? Do I need to reuse old parts during installation?
A: The product typically includes the alternator core only. All critical installation hardware, such as the mounting bracket (usually engine-mounted), bolts, serpentine belt, and pulley, must be reused from the vehicle's original components. Before installation, always inspect the condition of the belt; replace it if aged or cracked. Also, ensure the pulley size and number of grooves on the new alternator exactly match the old one to guarantee proper belt tracking.
Q5: For such a cross-brand, multi-year (GM) platform part, how are warranty and after-sales service ensured?
A: The supply chain for such mature platform parts is well-established. Reliable suppliers will offer a standard warranty of 12 to 24 months. When sourcing, focus on: Warranty Clarity: Confirm if the warranty is from the manufacturer or the seller. Return/Exchange Ease: Understand the process for returns in case of rare compatibility issues (e.g., connector mismatch). Technical Support: Whether the supplier has expertise in GM vehicles to answer questions about subtle differences between the Lucerne and DTS. Choosing a supplier specializing in GM parts or with a strong reputation is key to obtaining reliable after-sales support.
No one understands you better than us. What you really need is not just a supplier, but a trustworthy partner. Then please start greater success with Elecdura from now on.
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