{"product_id":"wai-21123n-alternator","title":"WAI 21123N Alternator","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\u003cp\u003eThis WAI alternator, part number 21123N, is a 100% new replacement built for modern charging demands. It is engineered for Bosch 150 amp applications and uses an internal regulator, internal fan, and decoupled clutch pulley design for stable electrical output.\u003c\/p\u003e\u003cp\u003eCompatible with Volkswagen and Audi applications, this alternator is a direct-fit option for vehicles that require a serpentine-belt, clockwise-rotation unit with a 6-groove pulley. Part number 21123N is also cross-referenced to Dorman - HELP 21123 for the same application.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e100% new, not remanufactured construction.\u003c\/li\u003e\n\u003cli\u003e150 amp output for higher electrical demand.\u003c\/li\u003e\n\u003cli\u003eInternal regulator and internal fan design.\u003c\/li\u003e\n\u003cli\u003e6-groove pulley for serpentine belt systems.\u003c\/li\u003e\n\u003cli\u003eDecoupled clutch pulley included.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Description\u003c\/h2\u003e\u003cp\u003eWAI builds this alternator to deliver the amperage needed by today’s electrical systems while maintaining consistent charging performance. The Bosch family design, clockwise rotation, and internal regulation make it a fit for a range of Volkswagen GTI, Golf, Tiguan, and Audi A3, S3, and Q3 applications that call for a 150 amp Bosch-style alternator. The 21123N part number should be matched to the vehicle’s original alternator specifications before installation.\u003c\/p\u003e\u003cp\u003eFor buyers searching for a Volkswagen GTI alternator, Audi A3 alternator, or Volkswagen Tiguan alternator, this unit provides the key electrical and pulley specifications needed for the listed applications. The 21123N alternator is also relevant for Volkswagen Atlas, Atlas Cross Sport, Jetta, Golf Alltrack, Golf SportWagen, Golf R, and Audi A3 Quattro fitments shown below.\u003c\/p\u003e\u003ch2\u003eWhat It Is Used For\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eCharging system failure caused by a worn alternator.\u003c\/li\u003e\n\u003cli\u003eLow battery charging or repeated battery drain.\u003c\/li\u003e\n\u003cli\u003eElectrical instability from an alternator that no longer meets output demand.\u003c\/li\u003e\n\u003cli\u003eNoise or pulley-related issues tied to the charging unit.\u003c\/li\u003e\n\u003cli\u003eReplacement after alternator wear on Bosch 150 amp applications.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eVerify the original alternator’s amperage rating, pulley style, rotation direction, and connector match before ordering. This unit is specified for Bosch 150 amp applications and uses a serpentine belt setup with a clockwise rotation. Confirm vehicle fitment by year, make, model, and notes, especially on applications with date-specific coverage such as 2020 Audi A3 and 2020 Audi S3.\u003c\/p\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003eWAI states that this alternator is manufactured with proprietary components and processes to support long service life and performance. The unit is new, not remanufactured, and built to meet the output requirements of modern vehicles.\u003c\/p\u003e","brand":"WAI","offers":[{"title":"Default Title","offer_id":53636934369461,"sku":"HGWL-21123N","price":304.35,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/WW_21123N_FRO.jpg?v=1793338196","url":"https:\/\/www.partcatalog.com\/products\/wai-21123n-alternator","provider":"PartCatalog","version":"1.0","type":"link"}