{"id":2257,"date":"2026-06-11T02:50:02","date_gmt":"2026-06-11T02:50:02","guid":{"rendered":"https:\/\/www.hongtengdaparts.com\/?post_type=product&#038;p=2257"},"modified":"2026-06-11T02:50:02","modified_gmt":"2026-06-11T02:50:02","slug":"oryginalny-czujnik-roznicy-cisnien-hitachi-4339559","status":"publish","type":"product","link":"https:\/\/www.hongtengdaparts.com\/pl\/product\/hitachi-genuine-differential-pressure-sensor-4339559\/","title":{"rendered":"Oryginalny czujnik r\u00f3\u017cnicy ci\u015bnie\u0144 Hitachi 4339559 \u2013 Do koparek EX200-3E \/ EX200-2 \/ EX200-3"},"content":{"rendered":"<p><strong>Film produktowy<\/strong><\/p>\n<div style=\"width: 800px;\" class=\"wp-video\"><video class=\"wp-video-shortcode\" id=\"video-2257-1\" width=\"800\" height=\"450\" preload=\"metadata\" controls=\"controls\"><source type=\"video\/mp4\" src=\"https:\/\/www.hongtengdaparts.com\/wp-content\/uploads\/2026\/06\/1d751881e45763edba17be876238c4c2_raw.mp4?_=1\" \/><a href=\"https:\/\/www.hongtengdaparts.com\/wp-content\/uploads\/2026\/06\/1d751881e45763edba17be876238c4c2_raw.mp4\">https:\/\/www.hongtengdaparts.com\/wp-content\/uploads\/2026\/06\/1d751881e45763edba17be876238c4c2_raw.mp4<\/a><\/video><\/div>\n<h3><span class=\"\">1. Why Genuine Matters on a $30 Sensor \u2013 The Real Cost of a Fake<\/span><\/h3>\n<p class=\"ds-markdown-paragraph\"><span class=\"\">A differential pressure sensor measures clogging of the hydraulic return filter or engine air filter. It looks simple. But a non\u2011genuine sensor can cost you far more than its purchase price.<\/span><\/p>\n<div class=\"ds-scroll-area ds-scroll-area--show-on-focus-within ds-scroll-area--enabled _1210dd7 c03cafe9\">\n<table>\n<thead>\n<tr>\n<th><span class=\"\">Failure Mode<\/span><\/th>\n<th><span class=\"\">Tania podr\u00f3bka<\/span><\/th>\n<th><span class=\"\">Hitachi Genuine (4339559)<\/span><\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><strong><span class=\"\">False alarm<\/span><\/strong><\/td>\n<td><span class=\"\">Triggers warning light when filter is clean<\/span><\/td>\n<td><span class=\"\">Accurate reading \u2013 no unnecessary downtime<\/span><\/td>\n<\/tr>\n<tr>\n<td><strong><span class=\"\">No alarm<\/span><\/strong><\/td>\n<td><span class=\"\">Fails to warn \u2013 filter bypasses, debris circulates<\/span><\/td>\n<td><span class=\"\">Reliable warning \u2013 you change filter on time<\/span><\/td>\n<\/tr>\n<tr>\n<td><strong><span class=\"\">Signal drift after 500 hours<\/span><\/strong><\/td>\n<td><span class=\"\">Common (thermal drift)<\/span><\/td>\n<td><span class=\"\">Tested to 5,000+ hours<\/span><\/td>\n<\/tr>\n<tr>\n<td><strong><span class=\"\">Connector fit<\/span><\/strong><\/td>\n<td><span class=\"\">Loose pins \u2013 intermittent signal<\/span><\/td>\n<td><span class=\"\">Tight fit \u2013 gold\u2011plated contacts<\/span><\/td>\n<\/tr>\n<tr>\n<td><strong><span class=\"\">Consequence of failure<\/span><\/strong><\/td>\n<td><span class=\"\">Unplanned shutdown or major hydraulic damage<\/span><\/td>\n<td><span class=\"\">Predictable maintenance<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p class=\"ds-markdown-paragraph\"><strong><span class=\"\">The math:<\/span><\/strong><span class=\"\">\u00a0A clogged bypassed hydraulic filter can send debris through the main pump. Pump replacement: $5,000\u2013$8,000. Genuine sensor: ~$30. False economy is expensive.<\/span><\/p>\n<h3><span class=\"\">2. Three Ways to Spot a Fake 4339559 \u2013 Visual Inspection Guide<\/span><\/h3>\n<p class=\"ds-markdown-paragraph\"><span class=\"\">We have seen counterfeit Hitachi sensors in the market. Here is how to tell real from fake before you install.<\/span><\/p>\n<div class=\"ds-scroll-area ds-scroll-area--show-on-focus-within ds-scroll-area--enabled _1210dd7 c03cafe9\">\n<table>\n<thead>\n<tr>\n<th><span class=\"\">Inspection Point<\/span><\/th>\n<th><span class=\"\">Genuine Hitachi 4339559<\/span><\/th>\n<th><span class=\"\">Common Fake<\/span><\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><strong><span class=\"\">Molding seam<\/span><\/strong><\/td>\n<td><span class=\"\">Clean, even, no flash<\/span><\/td>\n<td><span class=\"\">Rough, uneven, or excess plastic<\/span><\/td>\n<\/tr>\n<tr>\n<td><strong><span class=\"\">Part number engraving<\/span><\/strong><\/td>\n<td><span class=\"\">Laser etched, sharp, permanent<\/span><\/td>\n<td><span class=\"\">Printed or shallow stamp \u2013 rubs off<\/span><\/td>\n<\/tr>\n<tr>\n<td><strong><span class=\"\">Connector pin color<\/span><\/strong><\/td>\n<td><span class=\"\">Gold\u2011plated (yellowish)<\/span><\/td>\n<td><span class=\"\">Tin\u2011plated (silver) \u2013 corrodes faster<\/span><\/td>\n<\/tr>\n<tr>\n<td><strong><span class=\"\">O\u2011ring material<\/span><\/strong><\/td>\n<td><span class=\"\">Fluorocarbon (brownish), fuel resistant<\/span><\/td>\n<td><span class=\"\">Nitrile (black) \u2013 swells in oil<\/span><\/td>\n<\/tr>\n<tr>\n<td><strong><span class=\"\">Weight<\/span><\/strong><\/td>\n<td><span class=\"\">28g \u00b11g<\/span><\/td>\n<td><span class=\"\">Usually lighter (&lt;25g) or heavier (metal added)<\/span><\/td>\n<\/tr>\n<tr>\n<td><strong><span class=\"\">Box label<\/span><\/strong><\/td>\n<td><span class=\"\">Hitachi construction logo, batch code<\/span><\/td>\n<td><span class=\"\">Generic label or missing<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p class=\"ds-markdown-paragraph\"><strong><span class=\"\">When in doubt, send us a photo of the sensor and box \u2013 we will authenticate within 2 hours.<\/span><\/strong><\/p>\n<h3><span class=\"\">3. What This Sensor Actually Does \u2013 And What Happens When It Lies<\/span><\/h3>\n<p class=\"ds-markdown-paragraph\"><span class=\"\">On EX200-3E, EX200-2, EX200-3, the differential pressure sensor (4339559) monitors the hydraulic return filter. The ECU compares pressure before and after the filter.<\/span><\/p>\n<div class=\"ds-scroll-area ds-scroll-area--show-on-focus-within ds-scroll-area--enabled _1210dd7 c03cafe9\">\n<table>\n<thead>\n<tr>\n<th><span class=\"\">Sensor Reading<\/span><\/th>\n<th><span class=\"\">Actual Condition<\/span><\/th>\n<th><span class=\"\">ECU Action<\/span><\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><span class=\"\">Normal<\/span><\/td>\n<td><span class=\"\">Filter clean<\/span><\/td>\n<td><span class=\"\">Nothing<\/span><\/td>\n<\/tr>\n<tr>\n<td><span class=\"\">High differential<\/span><\/td>\n<td><span class=\"\">Filter clogging<\/span><\/td>\n<td><span class=\"\">Warning light + optional auto\u2011throttle reduction (if equipped)<\/span><\/td>\n<\/tr>\n<tr>\n<td><span class=\"\">No signal<\/span><\/td>\n<td><span class=\"\">Sensor failed<\/span><\/td>\n<td><span class=\"\">Kontrolka silnika + tryb awaryjny (zmniejszony przep\u0142yw pompy)<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p class=\"ds-markdown-paragraph\"><strong><span class=\"\">Je\u015bli fa\u0142szywy czujnik odczytuje \u201cnormalny\u201d stan, gdy filtr jest zatkany:<\/span><\/strong><span class=\"\">\u00a0Zaw\u00f3r obej\u015bciowy filtra otwiera si\u0119. Niefiltrowany olej kr\u0105\u017cy w uk\u0142adzie. Przyspiesza to zu\u017cycie pompy i zawor\u00f3w. Mo\u017cesz nie zauwa\u017cy\u0107 problemu, dop\u00f3ki pompa nie ulegnie awarii \u2013 kilka miesi\u0119cy p\u00f3\u017aniej.<\/span><\/p>\n<h3><span class=\"\">4. Rzeczywisty przypadek \u2013 warsztat, kt\u00f3ry nauczy\u0142 si\u0119 na w\u0142asnych b\u0142\u0119dach<\/span><\/h3>\n<p class=\"ds-markdown-paragraph\"><span class=\"\">Warsztat naprawczy w Manili kupi\u0142 sze\u015b\u0107 tanich \u201ckompatybilnych\u201d czujnik\u00f3w do remont\u00f3w EX200\u20113. W ci\u0105gu trzech miesi\u0119cy dwie maszyny wr\u00f3ci\u0142y z ostrze\u017ceniami o obej\u015bciu filtra \u2013 ale czujniki wskazywa\u0142y stan normalny. Rzeczywisty filtr by\u0142 zatkany; czujniki by\u0142y martwe.<\/span><\/p>\n<p class=\"ds-markdown-paragraph\"><span class=\"\">Wymienili jeden na nasz oryginalny 4339559 i przetestowali: ostrze\u017cenie zapali\u0142o si\u0119 dok\u0142adnie w momencie, gdy filtr osi\u0105gn\u0105\u0142 specyfikacj\u0119. Pozosta\u0142e pi\u0119\u0107 tanich czujnik\u00f3w? Wszystkie nie odczytywa\u0142y prawid\u0142owo. Wyrzucili je i zam\u00f3wili oryginalne.<\/span><\/p>\n<p class=\"ds-markdown-paragraph\"><strong><span class=\"\">Cytat w\u0142a\u015bciciela warsztatu:<\/span><\/strong><span class=\"\">\u00a0<\/span><em><span class=\"\">\u201cTani czujnik zaoszcz\u0119dzi\u0142 mi $20 za sztuk\u0119. Kosztowa\u0142 mnie dwa powrotne kursy ($400 ka\u017cdy) i zdenerwowanych klient\u00f3w. Nigdy wi\u0119cej.\u201d<\/span><\/em><\/p>\n<h3><span class=\"\">5. Lista kontrolna instalacji \u2013 unikaj typowych b\u0142\u0119d\u00f3w<\/span><\/h3>\n<div class=\"ds-scroll-area ds-scroll-area--show-on-focus-within ds-scroll-area--enabled _1210dd7 c03cafe9\">\n<table>\n<thead>\n<tr>\n<th><span class=\"\">Krok<\/span><\/th>\n<th><span class=\"\">Co zrobi\u0107<\/span><\/th>\n<th><span class=\"\">Dlaczego<\/span><\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><span class=\"\">1<\/span><\/td>\n<td><span class=\"\">Oczy\u015b\u0107 port monta\u017cowy<\/span><\/td>\n<td><span class=\"\">Brud wnikaj\u0105cy do ko\u0144c\u00f3wki czujnika blokuje port ci\u015bnieniowy<\/span><\/td>\n<\/tr>\n<tr>\n<td><span class=\"\">2<\/span><\/td>\n<td><span class=\"\">Wymie\u0144 miedzian\u0105 podk\u0142adk\u0119 uszczelniaj\u0105c\u0105 (je\u015bli jest wyposa\u017cona)<\/span><\/td>\n<td><span class=\"\">Stara podk\u0142adka przecieka \u2013 czujnik odczytuje niskie warto\u015bci<\/span><\/td>\n<\/tr>\n<tr>\n<td><span class=\"\">3<\/span><\/td>\n<td><span class=\"\">Dokr\u0119\u0107 momentem 18\u201322 Nm (nie wi\u0119cej)<\/span><\/td>\n<td><span class=\"\">Zbyt mocne dokr\u0119cenie powoduje p\u0119kni\u0119cie plastikowej obudowy<\/span><\/td>\n<\/tr>\n<tr>\n<td><span class=\"\">4<\/span><\/td>\n<td><span class=\"\">Na\u0142\u00f3\u017c smar dielektryczny na piny z\u0142\u0105cza<\/span><\/td>\n<td><span class=\"\">Zapobiega wnikaniu wilgoci i korozji pin\u00f3w<\/span><\/td>\n<\/tr>\n<tr>\n<td><span class=\"\">5<\/span><\/td>\n<td><span class=\"\">Po instalacji przetestuj ze znanym ograniczeniem<\/span><\/td>\n<td><span class=\"\">U\u017cyj zaworu kulowego, aby symulowa\u0107 zatkanie \u2013 sprawd\u017a, czy zapala si\u0119 kontrolka ostrzegawcza<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p class=\"ds-markdown-paragraph\"><strong><span class=\"\">Do ka\u017cdego czujnika do\u0142\u0105czamy jednostronicow\u0105 ilustrowan\u0105 instrukcj\u0119.<\/span><\/strong><\/p>\n<h3><span class=\"\">6. Zawarto\u015b\u0107 produktu \u2013 prosta i kompletna<\/span><\/h3>\n<div class=\"ds-scroll-area ds-scroll-area--show-on-focus-within ds-scroll-area--enabled _1210dd7 c03cafe9\">\n<table>\n<thead>\n<tr>\n<th><span class=\"\">Pozycja<\/span><\/th>\n<th><span class=\"\">Ilo\u015b\u0107<\/span><\/th>\n<th><span class=\"\">Uwaga<\/span><\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><span class=\"\">Czujnik r\u00f3\u017cnicy ci\u015bnie\u0144 4339559<\/span><\/td>\n<td><span class=\"\">1<\/span><\/td>\n<td><span class=\"\">Hitachi oryginalny, wyprodukowany w Japonii<\/span><\/td>\n<\/tr>\n<tr>\n<td><span class=\"\">Miedziana podk\u0142adka uszczelniaj\u0105ca<\/span><\/td>\n<td><span class=\"\">1<\/span><\/td>\n<td><span class=\"\">Wst\u0119pnie zamontowana lub osobna (zale\u017cy od partii)<\/span><\/td>\n<\/tr>\n<tr>\n<td><span class=\"\">Os\u0142ona ochronna<\/span><\/td>\n<td><span class=\"\">1<\/span><\/td>\n<td><span class=\"\">Do usuni\u0119cia przed instalacj\u0105<\/span><\/td>\n<\/tr>\n<tr>\n<td><span class=\"\">Kartonowe pude\u0142ko<\/span><\/td>\n<td><span class=\"\">1<\/span><\/td>\n<td><span class=\"\">Opakowanie w stylu Hitachi (z nadrukowanym numerem partii)<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p class=\"ds-markdown-paragraph\"><strong><span class=\"\">Nie zawiera:<\/span><\/strong><span class=\"\">\u00a0Wi\u0105zki przewod\u00f3w, obudowy filtra ani narz\u0119dzia diagnostycznego.<\/span><\/p>\n<h3><span class=\"\">7. Zamawianie i dostawa<\/span><\/h3>\n<div class=\"ds-scroll-area ds-scroll-area--show-on-focus-within ds-scroll-area--enabled _1210dd7 c03cafe9\">\n<table>\n<thead>\n<tr>\n<th><span class=\"\">Pozycja<\/span><\/th>\n<th><span class=\"\">Szczeg\u00f3\u0142y<\/span><\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><span class=\"\">Kompatybilno\u015b\u0107<\/span><\/td>\n<td><span class=\"\">Hitachi EX200-2, EX200-3, EX200-3E (r\u00f3wnie\u017c EX220, EX270 z t\u0105 sam\u0105 obudow\u0105 filtra \u2013 sprawd\u017a)<\/span><\/td>\n<\/tr>\n<tr>\n<td><span class=\"\">MOQ<\/span><\/td>\n<td><span class=\"\">1 szt.<\/span><\/td>\n<\/tr>\n<tr>\n<td><span class=\"\">Czas realizacji<\/span><\/td>\n<td><span class=\"\">6\u20138 dni roboczych<\/span><\/td>\n<\/tr>\n<tr>\n<td><span class=\"\">Opakowanie<\/span><\/td>\n<td><span class=\"\">Kartonowe pude\u0142ko we wzmocnionym kartonie<\/span><\/td>\n<\/tr>\n<tr>\n<td><span class=\"\">P\u0142atno\u015b\u0107<\/span><\/td>\n<td><span class=\"\">T\/T, XTransfer, PayPal, Western Union<\/span><\/td>\n<\/tr>\n<tr>\n<td><span class=\"\">Zdolno\u015b\u0107 produkcyjna<\/span><\/td>\n<td><span class=\"\">300 szt.\/miesi\u0105c (ograniczony zapas oryginalnych)<\/span><\/td>\n<\/tr>\n<tr>\n<td><span class=\"\">Gwarancja<\/span><\/td>\n<td><span class=\"\">6 miesi\u0119cy (tylko wady produkcyjne \u2013 brak gwarancji na zatkane filtry lub uszkodzenia spowodowane zanieczyszczeniami)<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<h3><span class=\"\">8. Przed zam\u00f3wieniem \u2013 weryfikacja<\/span><\/h3>\n<p class=\"ds-markdown-paragraph\"><span class=\"\">Poniewa\u017c podrobione czujniki s\u0105 powszechne, wymagamy jednego z poni\u017cszych, aby potwierdzi\u0107, \u017ce otrzymujesz orygina\u0142:<\/span><\/p>\n<ul>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong><span class=\"\">Opcja A:<\/span><\/strong><span class=\"\">\u00a0Zam\u00f3w bezpo\u015brednio od nas \u2013 dostarczamy z autoryzowanego japo\u0144skiego \u017ar\u00f3d\u0142a.<\/span><\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong><span class=\"\">Opcja B:<\/span><\/strong><span class=\"\">\u00a0Wy\u015blij zdj\u0119cie swojego starego czujnika (z g\u00f3ry i z boku) \u2013 por\u00f3wnujemy wizualnie i potwierdzamy.<\/span><\/p>\n<\/li>\n<\/ul>\n<p class=\"ds-markdown-paragraph\"><strong><span class=\"\">Nie sprzedajemy \u201ckompatybilnych\u201d ani \u201czamiennych\u201d wersji tego czujnika. Tylko oryginalny Hitachi 4339559.<\/span><\/strong><\/p>\n<hr \/>\n<p class=\"ds-markdown-paragraph\"><strong><span class=\"\">Nie ryzykuj swojego uk\u0142adu hydraulicznego, aby zaoszcz\u0119dzi\u0107 kilka dolar\u00f3w. Zainstaluj orygina\u0142 \u2013 i wiedz, \u017ce twoje ostrze\u017cenia s\u0105 prawdziwe.<\/span><\/strong><\/p>","protected":false},"excerpt":{"rendered":"<table>\n<tbody>\n<tr>\n<td><b>Odpowiedni model<\/b><\/td>\n<td>Trzy sposoby na rozpoznanie podr\u00f3bki 4339559 \u2013 Przewodnik kontroli wizualnej<\/td>\n<\/tr>\n<tr>\n<td><b>Nazwa<\/b><\/td>\n<td>Co ten czujnik faktycznie robi \u2013 i co si\u0119 dzieje, gdy k\u0142amie<\/td>\n<\/tr>\n<tr>\n<td><b>Numer cz\u0119\u015bci<\/b><\/td>\n<td>4339559<\/td>\n<\/tr>\n<tr>\n<td><b>Pochodzenie<\/b><\/td>\n<td>Japan<\/td>\n<\/tr>\n<tr>\n<td><b>Package Dimensions \/ Packaging<\/b><\/td>\n<td>Carton<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><strong>Uwaga: Podane informacje dotycz\u0105ce zastosowania maj\u0105 charakter wy\u0142\u0105cznie orientacyjny. Przed zakupem prosimy o potwierdzenie numeru cz\u0119\u015bci i por\u00f3wnanie jej ze starym elementem. W razie pyta\u0144 prosimy o kontakt.\u00a0<a href=\"https:\/\/www.hongtengdaparts.com\/pl\/skontaktuj-sie-z-nami\/\">skontaktuj si\u0119 z nami<\/a>.<\/strong><br \/>\n<strong>Warto wybra\u0107 produkt charakteryzuj\u0105cy si\u0119 stabiln\u0105 wydajno\u015bci\u0105, wysok\u0105 niezawodno\u015bci\u0105, \u0142atwym monta\u017cem i szybk\u0105 reakcj\u0105.<\/strong><\/p>","protected":false},"featured_media":2260,"template":"","meta":[],"product_brand":[],"product_cat":[57],"product_tag":[],"class_list":["post-2257","product","type-product","status-publish","has-post-thumbnail","product_cat-excavator-sensor","first","instock","shipping-taxable","product-type-simple"],"_links":{"self":[{"href":"https:\/\/www.hongtengdaparts.com\/pl\/wp-json\/wp\/v2\/product\/2257","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.hongtengdaparts.com\/pl\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/www.hongtengdaparts.com\/pl\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.hongtengdaparts.com\/pl\/wp-json\/wp\/v2\/media\/2260"}],"wp:attachment":[{"href":"https:\/\/www.hongtengdaparts.com\/pl\/wp-json\/wp\/v2\/media?parent=2257"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/www.hongtengdaparts.com\/pl\/wp-json\/wp\/v2\/product_brand?post=2257"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/www.hongtengdaparts.com\/pl\/wp-json\/wp\/v2\/product_cat?post=2257"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/www.hongtengdaparts.com\/pl\/wp-json\/wp\/v2\/product_tag?post=2257"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}