{"title":"Hydraulic Pump Parts","description":"\u003ch2\u003eDump Trailer Hydraulic Pump Parts\u003c\/h2\u003e\n\n\u003cp\u003e\nDump trailer hydraulic systems rely on several electrical and mechanical components to operate properly. When a hydraulic system stops working, the problem is often caused by a worn electrical component rather than the pump itself.\n\u003c\/p\u003e\n\n\u003ch3\u003eCommon Hydraulic Pump Replacement Parts\u003c\/h3\u003e\n\n\u003cp\u003e\n\n\u003ca href=\"https:\/\/aaatrailer.com\/products\/products-kti-391-19-12v-100a-start-solenoid-dump-trailer\" style=\"display:inline-block;background:#1a4db3;color:#ffffff;padding:8px 12px;border-radius:5px;font-weight:600;text-decoration:none;margin-right:8px;margin-bottom:8px;\"\u003e\nPump Start Solenoid\n\u003c\/a\u003e\n\n\u003ca href=\"https:\/\/aaatrailer.com\/products\/ti-74-06-15-foot-hydraulic-control-extension-cord\" style=\"display:inline-block;background:#1a4db3;color:#ffffff;padding:8px 12px;border-radius:5px;font-weight:600;text-decoration:none;margin-right:8px;margin-bottom:8px;\"\u003e\nPendant Extension Cord\n\u003c\/a\u003e\n\n\u003c\/p\u003e\n\n\u003cp\u003e\nThis collection includes replacement \u003cstrong\u003ehydraulic pump solenoids, wiring harnesses, electrical components, and accessories\u003c\/strong\u003e used in dump trailer hydraulic systems.\n\u003c\/p\u003e\n\n\u003ch3\u003eCompatible Hydraulic Pumps\u003c\/h3\u003e\n\n\u003cp\u003e\n\n\u003ca href=\"https:\/\/aaatrailer.com\/products\/products-kti-dc36ra-12v-double-acting-hydraulic-power-unit-6qt\" style=\"display:inline-block;background:#1a4db3;color:#ffffff;padding:8px 12px;border-radius:5px;font-weight:600;text-decoration:none;margin-right:8px;margin-bottom:8px;\"\u003e\nDC36RA Hydraulic Pump\n\u003c\/a\u003e\n\n\u003ca href=\"https:\/\/aaatrailer.com\/products\/kti-dc4400-hydraulic-pump\" style=\"display:inline-block;background:#1a4db3;color:#ffffff;padding:8px 12px;border-radius:5px;font-weight:600;text-decoration:none;margin-bottom:8px;\"\u003e\nDC4400 Hydraulic Pump\n\u003c\/a\u003e\n\n\u003c\/p\u003e\n\n\u003cp\u003e\nThese hydraulic pump parts are commonly used on dump trailers from manufacturers including \u003cstrong\u003ePJ Trailers, Load Trail, Lamar, Diamond C, Big Tex, MAXXD, Griffin, and many others\u003c\/strong\u003e.\n\u003c\/p\u003e\n\n\u003cp\u003e\nBrowse this collection to find the replacement hydraulic pump components needed to repair your dump trailer hydraulic system.\n\u003c\/p\u003e","products":[{"product_id":"products-kti-391-40-molded-double-acting-solenoid-12v","title":"KTI 391-40 Molded Double Acting Solenoid with Magnets \u0026 Twist-Lock Connectors","description":"\u003ch1 data-start=\"850\" data-end=\"897\"\u003eKTI 391-40 Molded Double Acting Solenoid\u003c\/h1\u003e\n\u003ch3 data-start=\"898\" data-end=\"951\"\u003e12V Power Up \/ Power Down Hydraulic Pump Solenoid\u003c\/h3\u003e\n\u003cp data-start=\"953\" data-end=\"1105\"\u003eThe \u003cstrong data-start=\"957\" data-end=\"1001\"\u003eKTI 391-40 molded double acting solenoid\u003c\/strong\u003e is designed specifically for 12-volt hydraulic systems using \u003cstrong data-start=\"1063\" data-end=\"1104\"\u003epower up \/ power down pump assemblies\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp data-start=\"1107\" data-end=\"1322\"\u003eEngineered for dump trailers, tilt trailers, and hydraulic dovetail systems, this solenoid provides reliable activation of double-acting hydraulic functions while offering fast installation and long-term durability.\u003c\/p\u003e\n\u003cp data-start=\"1324\" data-end=\"1458\"\u003eIf your hydraulic system is experiencing inconsistent lift or lowering performance, this solenoid is a critical replacement component.\u003c\/p\u003e\n\u003chr data-start=\"1460\" data-end=\"1463\"\u003e\n\n\u003ch3\u003e📐 Specifications\u003c\/h3\u003e\n\u003cdiv class=\"TyagGW_tableContainer\"\u003e\n\u003cdiv class=\"group TyagGW_tableWrapper flex flex-col-reverse w-fit\" tabindex=\"-1\"\u003e\n\u003ctable data-start=\"1496\" data-end=\"1851\" class=\"w-fit min-w-(--thread-content-width)\"\u003e\n\u003cthead data-start=\"1496\" data-end=\"1522\"\u003e\n\u003ctr data-start=\"1496\" data-end=\"1522\"\u003e\n\u003cth data-start=\"1496\" data-end=\"1512\" data-col-size=\"sm\" class=\"\"\u003eSpecification\u003c\/th\u003e\n\u003cth data-start=\"1512\" data-end=\"1522\" data-col-size=\"sm\" class=\"\"\u003eDetail\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody data-start=\"1549\" data-end=\"1851\"\u003e\n\u003ctr data-start=\"1549\" data-end=\"1575\"\u003e\n\u003ctd data-start=\"1549\" data-end=\"1557\" data-col-size=\"sm\"\u003eBrand\u003c\/td\u003e\n\u003ctd data-start=\"1557\" data-end=\"1575\" data-col-size=\"sm\"\u003eKTI Hydraulics\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"1576\" data-end=\"1600\"\u003e\n\u003ctd data-start=\"1576\" data-end=\"1590\" data-col-size=\"sm\"\u003ePart Number\u003c\/td\u003e\n\u003ctd data-start=\"1590\" data-end=\"1600\" data-col-size=\"sm\"\u003e391-40\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"1601\" data-end=\"1621\"\u003e\n\u003ctd data-start=\"1601\" data-end=\"1611\" data-col-size=\"sm\"\u003eVoltage\u003c\/td\u003e\n\u003ctd data-start=\"1611\" data-end=\"1621\" data-col-size=\"sm\"\u003e12V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"1622\" data-end=\"1677\"\u003e\n\u003ctd data-start=\"1622\" data-end=\"1636\" data-col-size=\"sm\"\u003eSystem Type\u003c\/td\u003e\n\u003ctd data-start=\"1636\" data-end=\"1677\" data-col-size=\"sm\"\u003eDouble Acting (Power Up \/ Power Down)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"1678\" data-end=\"1719\"\u003e\n\u003ctd data-start=\"1678\" data-end=\"1688\" data-col-size=\"sm\"\u003eHousing\u003c\/td\u003e\n\u003ctd data-start=\"1688\" data-end=\"1719\" data-col-size=\"sm\"\u003eMolded Weatherproof Plastic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"1720\" data-end=\"1750\"\u003e\n\u003ctd data-start=\"1720\" data-end=\"1728\" data-col-size=\"sm\"\u003eMount\u003c\/td\u003e\n\u003ctd data-start=\"1728\" data-end=\"1750\" data-col-size=\"sm\"\u003eZinc-Steel Bracket\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"1751\" data-end=\"1804\"\u003e\n\u003ctd data-start=\"1751\" data-end=\"1768\" data-col-size=\"sm\"\u003eConnector Type\u003c\/td\u003e\n\u003ctd data-start=\"1768\" data-end=\"1804\" data-col-size=\"sm\"\u003eTwist-Lock Electrical Connectors\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"1805\" data-end=\"1851\"\u003e\n\u003ctd data-start=\"1805\" data-end=\"1819\" data-col-size=\"sm\"\u003eApplication\u003c\/td\u003e\n\u003ctd data-col-size=\"sm\" data-start=\"1819\" data-end=\"1851\"\u003eHydraulic Pump Motor Systems\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003chr data-start=\"1853\" data-end=\"1856\"\u003e\n\u003ch1 data-start=\"1858\" data-end=\"1886\"\u003e🔍 What This Solenoid Does\u003c\/h1\u003e\n\u003cp data-start=\"1888\" data-end=\"1909\"\u003eThis molded solenoid:\u003c\/p\u003e\n\u003cp data-start=\"1911\" data-end=\"2107\"\u003e✔ Activates double-acting hydraulic valve functions\u003cbr data-start=\"1962\" data-end=\"1965\"\u003e✔ Controls power up and power down operation\u003cbr data-start=\"2009\" data-end=\"2012\"\u003e✔ Mounts directly to KTI hydraulic motor assemblies\u003cbr data-start=\"2063\" data-end=\"2066\"\u003e✔ Ensures consistent hydraulic response\u003c\/p\u003e\n\u003cp data-start=\"2109\" data-end=\"2196\"\u003eIt is specifically used on \u003cstrong data-start=\"2136\" data-end=\"2166\"\u003edouble-acting pump systems\u003c\/strong\u003e, not gravity-down-only units.\u003c\/p\u003e\n\u003chr data-start=\"2198\" data-end=\"2201\"\u003e\n\u003ch1 data-start=\"2203\" data-end=\"2239\"\u003e🛠 Verified Fitment \u0026amp; Applications\u003c\/h1\u003e\n\u003cp data-start=\"2241\" data-end=\"2328\"\u003eCommonly used on trailers equipped with KTI double-acting hydraulic systems, including:\u003c\/p\u003e\n\u003cp data-start=\"2330\" data-end=\"2530\"\u003e• Load Trail\u003cbr data-start=\"2342\" data-end=\"2345\"\u003e• PJ Trailers\u003cbr data-start=\"2358\" data-end=\"2361\"\u003e• Lamar\u003cbr data-start=\"2368\" data-end=\"2371\"\u003e• Diamond C\u003cbr data-start=\"2382\" data-end=\"2385\"\u003e• Griffin\u003cbr data-start=\"2394\" data-end=\"2397\"\u003e• Norstar Dump Beds\u003cbr data-start=\"2416\" data-end=\"2419\"\u003e• Iron Bull (KTI-equipped models)\u003cbr data-start=\"2452\" data-end=\"2455\"\u003e• Sure-Trac (select hydraulic models)\u003cbr data-start=\"2492\" data-end=\"2495\"\u003e• Texas Pride (KTI power systems)\u003c\/p\u003e\n\u003cp data-start=\"2532\" data-end=\"2633\"\u003e⚠ Fitment depends on the trailer being equipped with a \u003cstrong data-start=\"2587\" data-end=\"2632\"\u003eKTI double-acting hydraulic pump assembly\u003c\/strong\u003e.\u003c\/p\u003e\n\u003chr data-start=\"2635\" data-end=\"2638\"\u003e\n\u003ch1 data-start=\"2640\" data-end=\"2657\"\u003e💪 Key Features\u003c\/h1\u003e\n\u003ch3 data-start=\"2659\" data-end=\"2692\"\u003e✔ Molded Weatherproof Housing\u003c\/h3\u003e\n\u003cp data-start=\"2693\" data-end=\"2774\"\u003eSealed plastic construction protects against moisture, dirt, and job-site debris.\u003c\/p\u003e\n\u003ch3 data-start=\"2776\" data-end=\"2803\"\u003e✔ Twist-Lock Connectors\u003c\/h3\u003e\n\u003cp data-start=\"2804\" data-end=\"2873\"\u003eTool-free electrical connection for quick installation and servicing.\u003c\/p\u003e\n\u003ch3 data-start=\"2875\" data-end=\"2908\"\u003e✔ Zinc-Steel Mounting Bracket\u003c\/h3\u003e\n\u003cp data-start=\"2909\" data-end=\"2971\"\u003eRigid mounting ensures secure fitment to KTI hydraulic motors.\u003c\/p\u003e\n\u003ch3 data-start=\"2973\" data-end=\"3003\"\u003e✔ Integrated Magnet Design\u003c\/h3\u003e\n\u003cp data-start=\"3004\" data-end=\"3064\"\u003eProvides reliable internal actuation and stable performance.\u003c\/p\u003e\n\u003ch3 data-start=\"3066\" data-end=\"3104\"\u003e✔ Designed for Double-Acting Pumps\u003c\/h3\u003e\n\u003cp data-start=\"3105\" data-end=\"3173\"\u003eSpecifically engineered for power up \/ power down hydraulic systems.\u003c\/p\u003e\n\u003chr data-start=\"3175\" data-end=\"3178\"\u003e\n\n\u003ch3\u003e🚛 Applications \u0026amp; Fitment\u003c\/h3\u003e\n\u003cp data-start=\"3196\" data-end=\"3331\"\u003e• Dump trailers\u003cbr data-start=\"3211\" data-end=\"3214\"\u003e• Tilt trailers\u003cbr data-start=\"3229\" data-end=\"3232\"\u003e• Hydraulic dovetail trailers\u003cbr data-start=\"3261\" data-end=\"3264\"\u003e• Equipment transport trailers\u003cbr data-start=\"3294\" data-end=\"3297\"\u003e• Commercial construction setups\u003c\/p\u003e\n\u003chr data-start=\"3333\" data-end=\"3336\"\u003e\n\u003ch3 data-start=\"3575\" data-end=\"3583\"\u003e\u003cbr\u003e\u003c\/h3\u003e\n\u003cp data-start=\"3584\" data-end=\"3853\"\u003eKTI 391-40\u003cbr data-start=\"3594\" data-end=\"3597\"\u003emolded hydraulic solenoid\u003cbr data-start=\"3622\" data-end=\"3625\"\u003edouble acting solenoid\u003cbr data-start=\"3647\" data-end=\"3650\"\u003epower up power down solenoid\u003cbr data-start=\"3678\" data-end=\"3681\"\u003e12V hydraulic solenoid\u003cbr data-start=\"3703\" data-end=\"3706\"\u003edump trailer hydraulic part\u003cbr data-start=\"3733\" data-end=\"3736\"\u003eDiamond C hydraulic replacement\u003cbr data-start=\"3767\" data-end=\"3770\"\u003eLoad Trail hydraulic solenoid\u003cbr data-start=\"3799\" data-end=\"3802\"\u003ePJ trailer hydraulic part\u003cbr data-start=\"3827\" data-end=\"3830\"\u003ezinc bracket solenoid\u003c\/p\u003e\n\u003ch3\u003e📋 KTI Catalog Data\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eType: Molded Double Acting Solenoid\u003c\/li\u003e\n\u003cli\u003eVoltage: 12V DC\u003c\/li\u003e\n\u003cli\u003eFeatures: Built-in magnets, twist-lock connector\u003c\/li\u003e\n\u003cli\u003eFor: Double acting KTI power units (Universal Manifold II \u0026amp; III)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e🏭 About KTI Hydraulics\u003c\/h3\u003e\n\u003cp\u003eKTI Hydraulics Inc. — founded 1997 in Tustin, California. \u003cstrong\u003eISO 9001:2015 Certified.\u003c\/strong\u003e Every KTI power unit is 100% factory inspected and tested to stringent specifications before shipping. Inventor of the patented Universal Manifold® system used in dump trailers worldwide.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003e📞 Call\/Text: 517-225-1991 🌐 AAATrailer.com\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e🔄 \u003cstrong\u003eCross Reference \/ Alternate Part Numbers\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eKTI 391-40 | KTI-391-40 | 39140 | Molded double-acting solenoid with magnets\u003c\/p\u003e","brand":"KTI","offers":[{"title":"Default Title","offer_id":52026568245557,"sku":"391-40","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0733\/9144\/0181\/files\/kti-391-40-complete-kit-with-solenoid-valve-coils-and-4-pin-connector.jpg?v=1776710803"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0733\/9144\/0181\/collections\/PXL_20260108_163939104_273d7a04-7962-4f62-85f8-2e95b520f15c.jpg?v=1773675883","url":"https:\/\/aaatrailer.com\/collections\/hydraulic-pump-parts.oembed","provider":"AAA Trailer","version":"1.0","type":"link"}