{"product_id":"subaru-oem-subaru-4eat-front-ring-and-pinion-gear-4-11-1-ratio-38100ab390","title":"Subaru OEM Subaru 4EAT Front Ring and Pinion Gear - 4.11:1 ratio | 38100AB390","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eThe Genuine Subaru OEM 4EAT Front Ring and Pinion Gear Set (Part #38100AB390) is a factory-original replacement gear set engineered specifically for Subaru vehicles equipped with the 4EAT automatic transmission. Featuring a 4.11:1 final drive ratio, this precision-machined gear set restores factory drivetrain performance and ensures seamless power transfer from the transmission to the front differential. Designed for Subaru owners who demand exact-fit reliability and OEM-grade durability, this is the same component installed on the assembly line.\u003c\/p\u003e\n\n\u003ch2\u003eKey Features \u0026amp; Benefits\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGenuine Subaru OEM Part\u003c\/strong\u003e – Manufactured to factory specifications for guaranteed fit, function, and longevity — no modifications or adaptation required.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e4.11:1 Final Drive Ratio\u003c\/strong\u003e – Maintains the factory-specified gear ratio for correct speedometer calibration, fuel efficiency, and drivetrain balance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecision-Machined Gearing\u003c\/strong\u003e – Crafted from high-strength alloy steel with tight tolerances to minimize noise, vibration, and heat buildup under normal and demanding driving conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect-Fit Replacement\u003c\/strong\u003e – Engineered as an exact replacement for the original ring and pinion, eliminating guesswork and reducing installation time.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFactory Warranty Eligible\u003c\/strong\u003e – As a Genuine Subaru OEM component, this part is backed by Subaru's standard OEM parts warranty when installed by an authorized dealer or qualified technician.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e4EAT Transmission Compatibility\u003c\/strong\u003e – Specifically designed for Subaru's 4-speed automatic transmission (4EAT), ensuring proper engagement and long-term reliability.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhat's Included\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e1x Genuine Subaru Front Ring and Pinion Gear Set\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003ePart Number\u003c\/th\u003e\n\u003ctd\u003e38100AB390\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003ctd\u003eGenuine Subaru OEM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eGear Ratio\u003c\/th\u003e\n\u003ctd\u003e4.11:1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTransmission Type\u003c\/th\u003e\n\u003ctd\u003e4EAT (4-Speed Automatic)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eLocation\u003c\/th\u003e\n\u003ctd\u003eFront Differential \/ Ring and Pinion\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eHigh-Strength Alloy Steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOEM Part Number\u003c\/th\u003e\n\u003ctd\u003e38100AB390\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eFitment \u0026amp; Compatibility\u003c\/h2\u003e\n\u003cp\u003eThis Genuine Subaru ring and pinion gear set is designed for Subaru vehicles equipped with the 4EAT automatic transmission and a 4.11:1 final drive ratio. Please verify your vehicle's transmission type and existing gear ratio before ordering. Typical applications include:\u003c\/p\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eMake\u003c\/th\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eTransmission\u003c\/th\u003e\n\u003cth\u003eNotes\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSubaru\u003c\/td\u003e\n\u003ctd\u003eLegacy \/ Outback\u003c\/td\u003e\n\u003ctd\u003e4EAT Automatic\u003c\/td\u003e\n\u003ctd\u003eVerify ratio with VIN or dealer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSubaru\u003c\/td\u003e\n\u003ctd\u003eForester\u003c\/td\u003e\n\u003ctd\u003e4EAT Automatic\u003c\/td\u003e\n\u003ctd\u003eVerify ratio with VIN or dealer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSubaru\u003c\/td\u003e\n\u003ctd\u003eImpreza\u003c\/td\u003e\n\u003ctd\u003e4EAT Automatic\u003c\/td\u003e\n\u003ctd\u003eVerify ratio with VIN or dealer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003eImportant:\u003c\/strong\u003e Always confirm fitment using your vehicle's VIN or consult a Subaru dealer parts department to verify this is the correct ratio and part number for your specific model year and trim level. Final drive ratio must match your existing transmission build.\u003c\/p\u003e\n\n\u003ch2\u003eInstallation\u003c\/h2\u003e\n\u003cp\u003eReplacement of the front ring and pinion gear set is an advanced transmission rebuild procedure requiring specialized tools, including a press, bearing pullers, and gear-lash measurement equipment. This repair is not recommended as a DIY job for general consumers. Professional installation by a qualified Subaru technician or transmission specialist is strongly recommended. Proper gear backlash, preload, and bearing setup must be set to factory specifications to ensure noise-free operation and long service life.\u003c\/p\u003e","brand":"Subaru OEM","offers":[{"title":"Default Title","offer_id":43152079356000,"sku":"sub38100AB390","price":706.52,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1398\/9853\/files\/Subaru-OEM-Subaru-4EAT-Front-Ring-and-Pinion-Gear-4_111-ratio-38100AB390.png?v=1791485851","url":"https:\/\/www.importimageracing.com\/products\/subaru-oem-subaru-4eat-front-ring-and-pinion-gear-4-11-1-ratio-38100ab390","provider":"Import Image Racing","version":"1.0","type":"link"}