{"product_id":"ford-4r100-front-pump-assembly-pwm-cast-rff8-1998-up-f250-f350-7-3l-powerstroke","title":"Ford 4R100 Front Pump Assembly PWM Cast RFF8 1998-Up F250 F350 7.3L Powerstroke","description":"\u003cp\u003e\u003cstrong\u003eFord 4R100 Front Pump Assembly PWM Cast RFF8 1998-Up F250 F350 7.3L Powerstroke\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eUsed OEM unit pulled from an inspected donor transmission, cleaned and visually inspected before listing. Photos show a representative unit of this exact part and variant — see the fitment and casting notes below to confirm your match.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSKU:\u003c\/strong\u003e F-4R100-PM-U-01\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncludes:\u003c\/strong\u003e One good used OE 4R100 front pump assembly, PWM type, 12-bolt, pump casting RFF8, for units using the stamped steel coast clutch drum, as shown in the photos. Good used — no gasket, seal, bushing or O-ring included; replace all seals and bushings at install.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 30-day return-or-replace after delivery\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShipping:\u003c\/strong\u003e UPS Ground from our Tennessee warehouse, 2 business day handling\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eOEM \/ interchange references\u003c\/strong\u003e (verify against your casting\/tag):\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eRFF8\u003c\/li\u003e\n\u003cli\u003e36500DB\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eFits\u003c\/strong\u003e (engine\/year matters — read carefully): Ford 4R100 four-speed automatic, 1998 and up, PWM applications: F-250, F-350 and Super Duty, Excursion and E-Series with the 7.3L Power Stroke diesel, 6.8L V10 or 5.4L gas as equipped.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eImportant:\u003c\/strong\u003e Two things must match. First, PWM versus NON-PWM: this is the PWM pump, and the two are not interchangeable across the 1998 changeover. Second, it is the version for the STAMPED STEEL coast clutch drum — units built with the cast-iron coast clutch drum take a different pump. Check your drum type and the RFF8 casting against the photos before ordering. Sold as a used assembly; fit new seals and bushings.\u003c\/p\u003e\n\u003cp\u003eBefore you order: confirm your transmission code and casting\/part numbers. Not sure? Message us\nthrough eBay with your VIN or transmission tag and we will confirm fitment the same business day.\nRebuilder shops — ask about volume pricing. We stock transmission hard parts by family and can hold\ninventory for scheduled builds.\u003c\/p\u003e","brand":"Ford","offers":[{"title":"Default Title","offer_id":54608561373483,"sku":"F-4R100-PM-U-01","price":199.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0980\/0309\/1755\/files\/57_a1ad9afa-ef5a-42a4-b93d-e97b45a943a3.jpg?v=1785254453","url":"https:\/\/huskparts.com\/products\/ford-4r100-front-pump-assembly-pwm-cast-rff8-1998-up-f250-f350-7-3l-powerstroke","provider":"Husk Parts ","version":"1.0","type":"link"}