{"product_id":"ldfi0504-plunger-barrel-group-aa","title":"LDFI0504 - 06000\/31 Plunger \u0026 Barrel Group – Compatible with Ford® 7.3L Power Stroke \/ Navistar® T444E AA Injectors","description":"\u003cp\u003eThe \u003cstrong\u003eLDFI0504 Plunger \u0026amp; Barrel Group\u003c\/strong\u003e from \u003cstrong\u003eSRT Automotive (formerly Lucas Diesel Systems)\u003c\/strong\u003e is a new aftermarket replacement component designed for compatible Ford® 7.3L Power Stroke and Navistar® T444E HEUI diesel fuel injectors with \u003cstrong\u003eAA injector body codes\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThe precision-fitted plunger and barrel are essential components of the HEUI injection system. During injector operation, the plunger pressurizes diesel fuel within the barrel, supporting the high-pressure fuel delivery required for injection.\u003c\/p\u003e\n\u003cp\u003eDesigned for professional diesel fuel-injection rebuilding and repair, the LDFI0504 provides a replacement plunger and barrel group for compatible AA-code injectors used in selected Ford Power Stroke and Navistar T444E applications.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eImportant:\u003c\/strong\u003e This listing is for one plunger and barrel group, not a complete fuel injector. This component is intended for \u003cstrong\u003eAA injector configurations\u003c\/strong\u003e. Verify the original injector identification code and plunger-and-barrel reference before ordering.\u003c\/p\u003e\n\u003ch3\u003eFeatures \u0026amp; Benefits\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eNew aftermarket HEUI plunger and barrel group\u003c\/li\u003e\n\u003cli\u003eDesigned for Ford® 7.3L Power Stroke and Navistar® T444E AA-code injectors\u003c\/li\u003e\n\u003cli\u003e6.0 mm nominal plunger diameter\u003c\/li\u003e\n\u003cli\u003eStandard-type plunger and barrel configuration\u003c\/li\u003e\n\u003cli\u003eSupports high-pressure fuel generation within the compatible injector\u003c\/li\u003e\n\u003cli\u003eSuitable for professional injector rebuilding, repair, and remanufacturing\u003c\/li\u003e\n\u003cli\u003eSupplied in Lucas \/ SRT Automotive packaging\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eProduct Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCalifornia Diesel SKU:\u003c\/strong\u003e LDFI0504\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSRT Automotive Reference:\u003c\/strong\u003e SRDI0504 \u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFormer Lucas Reference:\u003c\/strong\u003e LDFI0504\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTechnical Reference:\u003c\/strong\u003e 06000\/31\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Diesel Fuel Injector Plunger \u0026amp; Barrel Group\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAlso Known As:\u003c\/strong\u003e HEUI Plunger and Barrel, Injector Plunger Assembly, Plunger \u0026amp; Barrel Set\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFuel Type:\u003c\/strong\u003e Diesel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInjection System:\u003c\/strong\u003e HEUI – Hydraulically Actuated Electronic Unit Injection\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInjector Body Code:\u003c\/strong\u003e AA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePlunger Diameter:\u003c\/strong\u003e 6.0 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConfiguration:\u003c\/strong\u003e Standard\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCondition:\u003c\/strong\u003e New \/ Aftermarket\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Tier:\u003c\/strong\u003e Aftermarket\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 12 Months \/ 50,000 Miles\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackaging:\u003c\/strong\u003e Lucas \/ SRT Automotive Packaging\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis product has not been installed or placed into service. Due to bulk handling, storage, inspection, or repackaging, minor cosmetic marks, light scuffs, or small surface imperfections may be present. These cosmetic variations are acceptable only when they do not affect fit, critical mating surfaces, or intended functionality.\u003c\/p\u003e\n\u003ch3\u003eCompatible Engine Families\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFord® 7.3L Power Stroke:\u003c\/strong\u003e Selected 1994–1998 HEUI applications equipped with AA-code injectors\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNavistar® \/ International® T444E:\u003c\/strong\u003e Selected applications equipped with AA-code HEUI injectors\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eApplications vary according to engine serial number, production year, injector configuration, and calibration. Engine displacement or vehicle model alone does not establish compatibility.\u003c\/p\u003e\n\u003ch3\u003eCompatible Injector References\u003c\/h3\u003e\n\u003ch4\u003eFord® 7.3L Power Stroke — AA Injector Family\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eF81Z-9E527-DRM\u003c\/li\u003e\n\u003cli\u003eF4TZ-9VE527-AARM\u003c\/li\u003e\n\u003cli\u003eF7TZ-9E527-ARM\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eNavistar® T444E — AA Injector Family\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e1822800C95\u003c\/li\u003e\n\u003cli\u003e1816187C3\u003c\/li\u003e\n\u003cli\u003e1822801C98 \/ 1822801C99\u003c\/li\u003e\n\u003cli\u003e1821836C3\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eFitment Verification:\u003c\/strong\u003e These injector numbers are provided as application references for the AA-code injector family. Confirm the original injector body code and plunger-and-barrel configuration before installing replacement components.\u003c\/p\u003e\n\u003ch3\u003eCross Reference Information\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eLDFI0504:\u003c\/strong\u003e Lucas Diesel Systems reference\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSRDI0504:\u003c\/strong\u003e SRT Automotive reference\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e06000\/31:\u003c\/strong\u003e Technical component reference\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDPE06000\/31:\u003c\/strong\u003e DIPACO aftermarket reference for the corresponding AA plunger-and-barrel application\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eImportant:\u003c\/strong\u003e Reference numbers identify corresponding replacement applications and do not establish identical manufacturing specifications.\u003c\/p\u003e\n\u003cp\u003eOther plunger-and-barrel configurations, including 06060\/31 and 06061\/31, are intended for different injector families and should not be substituted without technical verification.\u003c\/p\u003e\n\u003ch3\u003eProfessional Installation\u003c\/h3\u003e\n\u003cp\u003eHEUI plunger and barrel assemblies operate under high fuel pressures and require precise component fit and proper assembly procedures.\u003c\/p\u003e\n\u003cp\u003eInstallation should be performed by a qualified diesel fuel-injection technician using suitable tooling, proper cleanliness procedures, and the manufacturer's applicable service specifications.\u003c\/p\u003e\n\u003cp\u003eProfessional injector calibration and test-bench verification are recommended following installation to confirm fuel delivery, leakage, and correct injector operation.\u003c\/p\u003e\n\u003ch3\u003eWarranty\u003c\/h3\u003e\n\u003cp\u003eThis aftermarket product is backed by a \u003cstrong\u003e12-month \/ 50,000-mile limited warranty\u003c\/strong\u003e, subject to California Diesel warranty terms and proper professional installation.\u003c\/p\u003e\n\u003ch3\u003ePackaging\u003c\/h3\u003e\n\u003cp\u003eSupplied in Lucas \/ SRT Automotive packaging. Packaging appearance may vary between previous Lucas Diesel Systems branding and current SRT Automotive branding.\u003c\/p\u003e\n\u003ch3\u003eCalifornia Diesel Note\u003c\/h3\u003e\n\u003cp\u003eCalifornia Diesel supplies replacement diesel, automotive and heavy-equipment components for repair facilities, fleets and professional service applications.\u003c\/p\u003e\n\u003cp\u003eFor compatibility assistance, contact \u003ca href=\"mailto:sales@california-diesel.com\"\u003esales@california-diesel.com\u003c\/a\u003e or call \u003ca href=\"tel:+19512341022\"\u003e+1 (951) 234-1022\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eLegal Compliance\u003c\/h3\u003e\n\u003cp\u003eFord®, Power Stroke®, Navistar®, International®, and other third-party brand names, part numbers, and trademarks are used solely for product identification and compatibility information. They remain the property of their respective owners.\u003c\/p\u003e\n\u003cp\u003eSuch references do not imply that this aftermarket replacement component is manufactured, authorized, or endorsed by those vehicle or engine manufacturers.\u003c\/p\u003e\n\u003ch3\u003eCalifornia Proposition 65\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWARNING:\u003c\/strong\u003e Cancer and Reproductive Harm — \u003ca href=\"https:\/\/www.P65Warnings.ca.gov\"\u003ewww.P65Warnings.ca.gov\u003c\/a\u003e.\u003c\/p\u003e","brand":"SRT Automotive","offers":[{"title":"Default Title","offer_id":43784184332545,"sku":"LDFI0504","price":69.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0332\/4608\/5164\/files\/ldfi0504-plunger-and-barrel-group-aa-california-diesel-shop-1.jpg?v=1708052762","url":"https:\/\/www.california-diesel.com\/products\/ldfi0504-plunger-barrel-group-aa","provider":"California Diesel Shop","version":"1.0","type":"link"}