{"product_id":"s2578-pistol-grip-style-shift-knob-eaton-fuller-roadranger-red-and-black-flippers-13-speed-new","title":"S2578 Pistol Grip Style Shift Knob | Eaton Fuller Roadranger | Red and Black Flippers | 13 Speed | New Genuine","description":"\u003c!-- Product Hero --\u003e\n\u003ch2\u003eS2578 Eaton Fuller Pistol Grip Shift Knob with Pattern – 13 Speed Roadranger | New Genuine OEM\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eNew Genuine Eaton Fuller S2578\u003c\/strong\u003e — Complete pistol-grip master shift knob and air valve assembly with printed shift pattern, designed specifically for 13-speed Roadranger transmissions.\u003c\/p\u003e\n\n\u003c!-- Summary --\u003e\n\u003cp\u003eThis is the \u003cstrong\u003eshift pattern style\u003c\/strong\u003e version (not the plain Fuller logo version). It features a comfortable ergonomic pistol grip with a \u003cstrong\u003etwo-position black range selector paddle\u003c\/strong\u003e (Up\/Down for High\/Low range) and a \u003cstrong\u003etwo-position red splitter button\u003c\/strong\u003e (Front\/Back for high-side splitting). The top has the full 13-speed shift pattern printed for easy driver reference.\u003c\/p\u003e\n\u003cp\u003eThe Eaton Fuller 13-speed Roadranger uses a \u003cstrong\u003e5-position H-pattern\u003c\/strong\u003e in the main box, shifted twice — once in Low Range and once in High Range — plus a splitter in High Range.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIn stock and ready to ship\u003c\/strong\u003e from Discount Parts Exchange (DPX) in Mansfield, Ohio.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCall 419-522-3320\u003c\/strong\u003e for current pricing and availability.\u003c\/p\u003e\n\n\u003c!-- Key Specs --\u003e\n\u003ch2\u003eKey Specifications\u003c\/h2\u003e\n\u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e S2578\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eStyle:\u003c\/strong\u003e Pistol Grip Master Shift Knob with Printed Shift Pattern (Range + Splitter)\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eRange Selector:\u003c\/strong\u003e Two-position black paddle (Up\/Down – High\/Low Range)\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSplitter Button:\u003c\/strong\u003e Two-position red button (Front\/Back – High Side Splitter)\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMounting:\u003c\/strong\u003e 1\/2\"-13 threaded main port (threads onto shifter lever) + Includes mounting hardware\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eAir Fittings:\u003c\/strong\u003e \u003cstrong\u003eIncluded\u003c\/strong\u003e – Comes with 4x Fuller 84005 brass fittings for 5\/32\" air tubing. Bottom ports are 1\/16\" NPT.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e Backed by Eaton Fuller Manufacturer Warranty\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eCondition:\u003c\/strong\u003e New Genuine Eaton Fuller OEM – Ships in original packaging\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003c!-- How it Works --\u003e\n\u003ch2\u003eHow the S2578 Roadranger Valve Works\u003c\/h2\u003e\n\u003cdiv style=\"display: grid; grid-template-columns: 1fr 1fr; gap: 30px; margin: 30px 0;\"\u003e\n    \u003cdiv\u003e\u003cimg src=\"https:\/\/truckparts4u.com\/cdn\/shop\/files\/A6913-Roadranger-Valve-LO-Range-Splitter-Rearward.png?v=1780519079\u0026amp;width=823\" alt=\"S2578 Roadranger Valve - Low Range with Splitter Rearward\" style=\"max-width: 100%; height: auto; border: 1px solid #ddd;\"\u003e\u003c\/div\u003e\n    \u003cdiv\u003e\n        \u003cstrong\u003eLow Range Operation\u003c\/strong\u003e\u003cbr\u003e\u003cbr\u003eConstant air pressure is supplied from the slave valve to the Roadranger valve “S” port (1). For LO range (range lever down), splitter button rearward, air flows out of the Roadranger valve “P” port.\n    \u003c\/div\u003e\n    \u003cdiv\u003e\u003cimg src=\"https:\/\/truckparts4u.com\/cdn\/shop\/files\/A6913-Roadranger-Valve-HI-Range-Splitter-Rearward.png?v=1780519107\u0026amp;width=823\" alt=\"S2578 Roadranger Valve - High Range with Splitter Rearward\" style=\"max-width: 100%; height: auto; border: 1px solid #ddd;\"\u003e\u003c\/div\u003e\n    \u003cdiv\u003e\n        \u003cstrong\u003eHigh Range Operation\u003c\/strong\u003e\u003cbr\u003e\u003cbr\u003eFor HI range (range lever up), splitter button rearward, the lever prevents the air from passing through the Roadranger valve. Air now flows through the “H\/L” port into the Roadranger valve.\n    \u003c\/div\u003e\n    \u003cdiv\u003e\u003cimg src=\"https:\/\/truckparts4u.com\/cdn\/shop\/files\/A6913-Roadranger-Valve-Splitter-Operation-Forward.png?v=1780519129\u0026amp;width=823\" alt=\"S2578 Roadranger Valve - Splitter Operation Forward\" style=\"max-width: 100%; height: auto; border: 1px solid #ddd;\"\u003e\u003c\/div\u003e\n    \u003cdiv\u003e\n        \u003cstrong\u003eSplitter Operation (High Range)\u003c\/strong\u003e\u003cbr\u003e\u003cbr\u003eFor splitter operation (range lever up), splitter button forward, air flows through the “H\/L” port and air flows out of the Roadranger valve “SP” port. Air pressure which was in the outlet line is exhausted out the bottom of the Roadranger valve.\n    \u003c\/div\u003e\n    \u003cdiv\u003e\u003cimg src=\"https:\/\/truckparts4u.com\/cdn\/shop\/files\/A6913-Roadranger-Valve-HI-Range-Overdrive-Splitter-Forward.png?v=1780519988\u0026amp;width=823\" alt=\"S2578 Roadranger Valve - HI Range Overdrive with Splitter Forward\" style=\"max-width: 100%; height: auto; border: 1px solid #ddd;\"\u003e\u003c\/div\u003e\n    \u003cdiv\u003e\n        \u003cstrong\u003eHI Range Overdrive\u003c\/strong\u003e\u003cbr\u003e\u003cbr\u003eFor HI range overdrive (range lever up), actuator button forward, air flows out of the Roadranger valve “SP” port. Air pressure which was in the outlet line is exhausted out the Roadranger valve bottom.\n    \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c!-- 13-Speed Shift Pattern --\u003e\n\u003ch2\u003e13-Speed Roadranger Shift Pattern\u003c\/h2\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/truckparts4u.com\/cdn\/shop\/files\/RTLO-18913A_Eaton_Fuller_13_Speed_Shift_Pattern_Diagram_Official_4300764..jpg?v=1777917963\" alt=\"Eaton Fuller 13-Speed Roadranger Shift Pattern Diagram\" style=\"max-width: 100%; height: 210px; border: 1px solid rgb(221, 221, 221); margin: 20px 0px;\" width=\"407\"\u003e\u003c\/p\u003e\n\u003cp\u003eThe Eaton Fuller 13-speed uses a \u003cstrong\u003e5-position H-pattern\u003c\/strong\u003e in the main box, shifted twice — once in Low Range and once in High Range — plus a splitter in High Range.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eShifting Tips:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n    \u003cli\u003eToggle the black Hi\/Lo paddle \u003cstrong\u003ebefore\u003c\/strong\u003e reaching the top of the gear you're leaving.\u003c\/li\u003e\n    \u003cli\u003ePre-select the red splitter button \u003cstrong\u003ebefore\u003c\/strong\u003e making the shift — not after.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003c!-- Applications --\u003e\n\u003ch2\u003eApplications \u0026amp; Fitment\u003c\/h2\u003e\n\u003cp\u003eDesigned for Eaton Fuller 13-Speed Roadranger transmissions including:\u003c\/p\u003e\n\u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003e\u003ca href=\"https:\/\/truckparts4u.com\/products\/rtlo-16713a-eaton-fuller-13-speed-reman\" style=\"color:#E6650E;\"\u003eRTLO-16713A\u003c\/a\u003e\u003c\/strong\u003e (Double Overdrive)\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003e\u003ca href=\"https:\/\/truckparts4u.com\/products\/rtlo18913a-eaton-fuller-roadranger-transmission-dpe-reman-exchange\" style=\"color:#E6650E;\"\u003eRTLO-18913A\u003c\/a\u003e\u003c\/strong\u003e (and RTLOF18913A, RTLO16913A, RTLOF16913A)\u003c\/li\u003e\n    \u003cli\u003eRTO \/ RTX Series: RTO12513, RTO14613, RTO15613 and similar\u003c\/li\u003e\n    \u003cli\u003eRTLO Low Inertia Series: RTLO16713A, RTLO16913A, RTLO18913A, RTLO20913A, RTLO22913A\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eFits All Major Truck Makes\u003c\/h2\u003e\n\u003cp\u003eThis S2578 shift knob fits any truck equipped with a compatible Eaton Fuller 13-speed Roadranger transmission.\u003c\/p\u003e\n\u003cul\u003e\n    \u003cli\u003ePeterbilt\u003c\/li\u003e\n    \u003cli\u003eKenworth\u003c\/li\u003e\n    \u003cli\u003eFreightliner\u003c\/li\u003e\n    \u003cli\u003eInternational \/ Navistar\u003c\/li\u003e\n    \u003cli\u003eVolvo\u003c\/li\u003e\n    \u003cli\u003eMack\u003c\/li\u003e\n    \u003cli\u003eWestern Star\u003c\/li\u003e\n    \u003cli\u003eAutocar\u003c\/li\u003e\n    \u003cli\u003eand many others\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e This is the \u003cstrong\u003eprinted shift pattern style\u003c\/strong\u003e knob. The version with the standard Fuller logo on top is \u003ca href=\"https:\/\/truckparts4u.com\/products\/a6913-shift-knob-eaton-fuller-roadranger-pistol-grip-style-13-speed-new\" style=\"color:#E6650E;\"\u003eA6913\u003c\/a\u003e. This is \u003cstrong\u003enot\u003c\/strong\u003e the same as the \u003ca href=\"https:\/\/truckparts4u.com\/products\/a6909-eaton-fuller-pistol-grip-style-shift-knob-valve-new-genuine-fuller\"\u003eA6909\u003c\/a\u003e (9\/10-speed) or A-6915 (15-speed).\u003c\/p\u003e\n\n\u003c!-- What’s Included --\u003e\n\u003ch2\u003eWhat’s Included\u003c\/h2\u003e\n\u003cul\u003e\n    \u003cli\u003e1 × Eaton Fuller S2578 Pistol Grip Shift Knob Assembly with Printed Pattern\u003c\/li\u003e\n    \u003cli\u003e4 × Fuller 84005 Brass Air Fittings (for 5\/32\" tubing)\u003c\/li\u003e\n    \u003cli\u003eFactory OEM packaging\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003c!-- Related Products --\u003e\n\u003ch2\u003eRelated Products\u003c\/h2\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; margin: 20px 0;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"background: #f0f0f0;\"\u003e\n\u003cth style=\"padding: 12px; text-align: left; border: 1px solid #ddd;\"\u003ePart Number\u003c\/th\u003e\n\u003cth style=\"padding: 12px; text-align: left; border: 1px solid #ddd;\"\u003eMfr\u003c\/th\u003e\n\u003cth style=\"padding: 12px; text-align: left; border: 1px solid #ddd;\"\u003eDescription\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n    \u003ctd style=\"padding: 12px; border: 1px solid #ddd;\"\u003e\u003ca href=\"https:\/\/truckparts4u.com\/products\/rtlo-16713a-eaton-fuller-13-speed-reman\" style=\"color:#E6650E;\"\u003eRTLO-16713A\u003c\/a\u003e\u003c\/td\u003e\n    \u003ctd style=\"padding: 12px; border: 1px solid #ddd;\"\u003eEaton Fuller\u003c\/td\u003e\n    \u003ctd style=\"padding: 12px; border: 1px solid #ddd;\"\u003e13-Speed Double Overdrive Transmission – Remanufactured by DPX\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n    \u003ctd style=\"padding: 12px; border: 1px solid #ddd;\"\u003e\u003ca href=\"https:\/\/truckparts4u.com\/products\/rtlo18913a-eaton-fuller-roadranger-transmission-dpe-reman-exchange\" style=\"color:#E6650E;\"\u003eRTLO-18913A\u003c\/a\u003e\u003c\/td\u003e\n    \u003ctd style=\"padding: 12px; border: 1px solid #ddd;\"\u003eEaton Fuller\u003c\/td\u003e\n    \u003ctd style=\"padding: 12px; border: 1px solid #ddd;\"\u003e13-Speed Roadranger Transmission – Remanufactured by DPX\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n    \u003ctd style=\"padding: 12px; border: 1px solid #ddd;\"\u003e\u003ca href=\"https:\/\/truckparts4u.com\/products\/a6913-shift-knob-eaton-fuller-roadranger-pistol-grip-style-13-speed-new\" style=\"color:#E6650E;\"\u003eA6913\u003c\/a\u003e\u003c\/td\u003e\n    \u003ctd style=\"padding: 12px; border: 1px solid #ddd;\"\u003eEaton Fuller\u003c\/td\u003e\n    \u003ctd style=\"padding: 12px; border: 1px solid #ddd;\"\u003ePistol Grip Shift Knob – 13-Speed (Standard Fuller Logo)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n    \u003ctd style=\"padding: 12px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eS2578\u003c\/strong\u003e\u003c\/td\u003e\n    \u003ctd style=\"padding: 12px; border: 1px solid #ddd;\"\u003eEaton Fuller\u003c\/td\u003e\n    \u003ctd style=\"padding: 12px; border: 1px solid #ddd;\"\u003ePistol Grip Shift Knob with Printed Shift Pattern – 13-Speed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003c!-- DPX Tools --\u003e\n\u003ch2\u003eDPX Drivetrain Tools Hub\u003c\/h2\u003e\n\u003cp\u003eFree tools built by rebuilders for mechanics and drivers:\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/truckparts4u.com\/pages\/dpx-drivetrain-tools-hub\"\u003eRoad Speed Calculator • Gear Ratio Charts • PTO Shimming Guide • Full IPL Library →\u003c\/a\u003e\u003c\/p\u003e\n\n\u003c!-- Shipping \/ Location --\u003e\n\u003ch3\u003eShipping \/ Location\u003c\/h3\u003e\n\u003cul\u003e\n    \u003cli\u003eShips from our \u003cstrong\u003eMansfield, Ohio\u003c\/strong\u003e warehouse (419-522-3320)\u003c\/li\u003e\n    \u003cli\u003eParcel or LTL options available based on packaging and weight\u003c\/li\u003e\n    \u003cli\u003eWarehouse Bin Location: DPX_OH_BR549_EFR\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eHeavy-Duty Solutions — Built to Perform. Trusted to Last. Discount Parts Exchange (DPX).\u003c\/strong\u003e\u003c\/p\u003e","brand":"Eaton-Fuller","offers":[{"title":"Default Title","offer_id":56616795603110,"sku":"S2578","price":134.44,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0679\/9287\/9270\/files\/S2578_Eaton_Fuller_Pistol_Grip_Shift_Knob_with_Pattern_-_Front_View.jpg?v=1781015325","url":"https:\/\/truckparts4u.com\/products\/s2578-pistol-grip-style-shift-knob-eaton-fuller-roadranger-red-and-black-flippers-13-speed-new","provider":"Discount Parts Exchange (DPX)","version":"1.0","type":"link"}