{"product_id":"wai-21798n-alternator","title":"WAI 21798N Alternator","description":"\u003ch2\u003eAlternator Overview\u003c\/h2\u003e\u003cp\u003eThis WAI alternator, part number 21798N, is a direct electrical replacement for the charging system on compatible Subaru applications. It is built as a 100% new unit, not remanufactured, and is engineered to deliver the amperage needed for modern vehicle electrical loads.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e150-amp output for stable charging performance.\u003c\/li\u003e\n\u003cli\u003eInternal regulator for integrated voltage control.\u003c\/li\u003e\n\u003cli\u003eInternal fan design for compact alternator construction.\u003c\/li\u003e\n\u003cli\u003eSerpentine belt pulley with 6 grooves.\u003c\/li\u003e\n\u003cli\u003eDecoupled clutch pulley included for smoother belt operation.\u003c\/li\u003e\n\u003cli\u003e100% new construction with proprietary components and processes.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Description\u003c\/h2\u003e\u003cp\u003eWAI part number 21798N is a 12-volt alternator built for vehicles that rely on consistent charging output and dependable electrical support. The Mitsubishi-family design uses an internal regulator, internal fan, and serpentine pulley setup with six grooves, along with a decoupled clutch pulley and included pulley assembly. Fits 2019-2020 Subaru Forester, N\/A. This part cross-references Gates 21798 for the same application.\u003c\/p\u003e\u003ch2\u003eCommon Issues This Part May Solve\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eLow battery charging caused by a weak alternator.\u003c\/li\u003e\n\u003cli\u003eDim lights or unstable electrical performance under load.\u003c\/li\u003e\n\u003cli\u003eBattery warning light triggered by charging system faults.\u003c\/li\u003e\n\u003cli\u003eBelt noise or irregular alternator pulley operation.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eVerify connector style, pulley configuration, and amperage rating before installation. Confirm the vehicle uses the same 12-volt charging system layout and serpentine belt arrangement. Fits 2019-2020 Subaru Forester, N\/A. Use the part number 21798N to confirm application details during ordering and service.\u003c\/p\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003eWAI states this alternator is manufactured as a new unit rather than remanufactured, using proprietary components and processes to support long service life and consistent performance.\u003c\/p\u003e","brand":"WAI","offers":[{"title":"Default Title","offer_id":53534285627573,"sku":"HGWL-21798N","price":283.33,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/WW_21798N_FRO.jpg?v=1792130141","url":"https:\/\/www.partcatalog.com\/products\/wai-21798n-alternator","provider":"PartCatalog","version":"1.0","type":"link"}