{"product_id":"20r1270-caterpillar-3500-eui-remanufactured-fuel-injector","title":"20R1270 Caterpillar 3508B \/ 3512 \/ 3512B \/ 3516B Remanufactured EUI Diesel Fuel Injector | 386-1758 \/ 392-0206","description":"\u003ch2\u003eExtended Life Remanufactured Caterpillar 20R1270 EUI Fuel Injector for 3500-Series Engines\u003c\/h2\u003e\n\u003cp\u003eThe 20R1270 (20R-1270) is a remanufactured electronic unit injector (EUI) for Caterpillar 3500-series diesel engines (3508B, 3512, 3512B, 3516B). It replaces CAT injector group 386-1758 \/ 392-0206 and is a direct drop-in for the original injector on generator sets, marine, petroleum, industrial and mining applications.\u003c\/p\u003e\n\u003cp\u003eThis is an \u003cstrong\u003eExtended Life\u003c\/strong\u003e remanufactured injector, built to run up to 50% longer than a standard reman EUI. OEM replacement intervals on 3500 EUIs can be as short as 6,000 hours. As internals wear, spray quality drops and unburned fuel leaves carbon on the pistons (“carbon packing”), which costs fuel economy and can pull an overhaul forward. Extended Life units are built to hold spray quality longer and keep carbon packing in check.\u003c\/p\u003e\n\u003ch2\u003eWhat Makes It Extended Life\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eUp to 80% of internal components replaced with new parts (a typical reman replaces less than half).\u003c\/li\u003e\n\u003cli\u003eUpgraded seals, springs and O-rings: Viton elastomers, SAE 4130 steel and chromium-silicon spring alloy.\u003c\/li\u003e\n\u003cli\u003eNozzle, valve and body re-honed and lapped; solenoid replaced when needed.\u003c\/li\u003e\n\u003cli\u003eDyno-tested and calibrated with up to four trim codes per injector for tight cylinder-to-cylinder balance.\u003c\/li\u003e\n\u003cli\u003eMechanical and electronic testing on every unit; any unit that fails a test does not ship.\u003c\/li\u003e\n\u003cli\u003eBuilt in a clean-room facility to OEM, SAE and ASTM standards, and laser-serialized for full traceability.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eSigns your 3500 injectors are due:\u003c\/strong\u003e hard starting, white or black smoke, misfire, fuel in the oil, one hot exhaust port or bank, or lost power under load.\u003c\/p\u003e\n\u003ch2\u003eFits Caterpillar Engines\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eCaterpillar 3508B\u003c\/li\u003e\n\u003cli\u003eCaterpillar 3512\u003c\/li\u003e\n\u003cli\u003eCaterpillar 3512B\u003c\/li\u003e\n\u003cli\u003eCaterpillar 3516B\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e3508B \/ 3512B \/ 3516B Generator Set\u003c\/li\u003e\n\u003cli\u003eSR4B Generator\u003c\/li\u003e\n\u003cli\u003ePM3508 \/ PM3512 \/ PM3516 \/ 3516B Power Module\u003c\/li\u003e\n\u003cli\u003eMarine Propulsion \u0026amp; Auxiliary\u003c\/li\u003e\n\u003cli\u003eIndustrial \u0026amp; Petroleum Engines\u003c\/li\u003e\n\u003cli\u003e3508B \/ 3512B Locomotive Engine\u003c\/li\u003e\n\u003cli\u003e854G Wheel Dozer\u003c\/li\u003e\n\u003cli\u003e992G Wheel Loader\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eVerify before ordering:\u003c\/strong\u003e match the part number stamped on your existing injector (20R1270, 386-1758 \/ 392-0206) or confirm by engine serial number. Call (720) 445-6249 with your ESN and we will confirm fitment.\u003c\/p\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart number\u003c\/td\u003e\n\u003ctd\u003e20R1270 (20R-1270)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReplaces CAT\u003c\/td\u003e\n\u003ctd\u003e386-1758 \/ 392-0206\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInjector type\u003c\/td\u003e\n\u003ctd\u003eElectronic Unit Injector (EUI), mechanically actuated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEngine family\u003c\/td\u003e\n\u003ctd\u003eCaterpillar 3500 series\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCondition\u003c\/td\u003e\n\u003ctd\u003eRemanufactured\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQuantity\u003c\/td\u003e\n\u003ctd\u003e1 injector\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCore\u003c\/td\u003e\n\u003ctd\u003eRefundable core charge applies — return your old injector for credit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOEM Cross References\u003c\/h2\u003e\n\u003cp\u003e20R1270, 20R-1270, 386-1758, 3861758, 392-0206, 3920206, R-20R1270\u003c\/p\u003e\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eEnter the new injector's trim code into the ECM with Cat ET after installation — skipping this causes uneven fueling.\u003c\/li\u003e\n\u003cli\u003eInstall new injector O-rings\/seals and inspect the injector sleeve for erosion or leakage.\u003c\/li\u003e\n\u003cli\u003eSet injector and valve lash to the Cat SIS specification for your engine arrangement.\u003c\/li\u003e\n\u003cli\u003eReplace injectors as a matched set on high-hour engines for balanced cylinder output.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eWhat does 20R1270 replace?\u003c\/strong\u003e 20R1270 replaces Caterpillar 386-1758 \/ 392-0206 and cross-references to Interstate-McBee R-20R1270.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow is Extended Life different from a standard reman?\u003c\/strong\u003e More new internal parts (up to 80%), upgraded seal and spring materials, and dyno calibration with multiple trim codes, built to run up to 50% longer between replacements.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs there a core charge?\u003c\/strong\u003e Yes. A refundable core charge applies; return the old injector in rebuildable condition for full credit.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDo I need to program the injector?\u003c\/strong\u003e Yes — load the trim code printed on the injector into the engine ECM using Cat ET.\u003c\/p\u003e\n\u003ch2\u003eWhy Buy from JAK's Diesel\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eShips direct from the remanufacturer to cut downtime.\u003c\/li\u003e\n\u003cli\u003eCross-referenced against CAT and aftermarket numbers by diesel parts specialists.\u003c\/li\u003e\n\u003cli\u003eFitment and install help by phone: (720) 445-6249.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"JAK's Diesel","offers":[{"title":"Default Title","offer_id":68094700257465,"sku":"JAKS-20R1270","price":775.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/6171\/4361\/files\/caterpillar-3500-eui-remanufactured-fuel-injector-side.png?v=1793370138","url":"https:\/\/www.jaksdiesel.com\/products\/20r1270-caterpillar-3500-eui-remanufactured-fuel-injector","provider":"JAK's Diesel","version":"1.0","type":"link"}