Caterpillar original Diesel Common Rail Fuel Injector 387-9433, 387-9432, 387-9430 for C7 C9 HEUI Diesel Engine, Caterpillar E330D E336D Excavator, Replacement for OEM 10R7222 original new injector
Product Details
Caterpillar C7 C9 fuel injector
,387-9433 diesel injector E330D
,OEM 10R7222 excavator injector
Caterpillar original Diesel Common Rail Fuel Injector 387-9433, 387-9432, 387-9430 for C7 C9 HEUI Diesel Engine, Caterpillar E330D E336D Excavator, Replacement for OEM 10R7222 original new injector
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Fuel Type |
Diesel |
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Condition |
Original-type replacement component |
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Applicable Engine |
Caterpillar C9, C9 ACERT diesel engines; additional C9 industrial, excavator, petroleum and power unit variants (compatibility requires serial number verification) |
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Injector Type |
HEUI / MEUI diesel fuel injector |
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Quality Standard |
Information not provided |
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Packaging |
Information not provided |
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Fuel System |
HEUI / MEUI diesel fuel injection system |
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OE Number |
387-9433 / 3879433 |
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Brand |
CAT (Caterpillar) |
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Cross Number / Universal Number |
10R-7222/10R7222, 20R-1917/20R1917, 20R-8064/20R8064, 20R-8968/20R8968, 557-7633/5577633, 553-2592/5532592, 293-4072/2934072, 328-2574/3282574, 267-3360/2673360, 254-4339/2544339, 572-0119/5720119, 254-4340/2544340 |
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Vehicle / Equipment Application |
Caterpillar 330D/330D L/330D LN/330D FM/330D MH, 336D/336D L/336D LN, 336D2/336D2 GC/336D2 L/336D2 XE/336D2 L XE/336D2 LXE, 340D L/340D2 L, E330D, E336D, E360D excavators; supplier-documented extended applications include 627G/637D/637E/637G wheel tractor scrapers, 815F II/816F II compactors, 814F II wheel dozer, 140M/140M 2/14L/160M/160M 2 motor graders, 973C track type loader, selected forestry and petroleum equipment (extended applications require serial number verification before shipment) |
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Application Type |
Heavy-duty construction, mining, industrial power, petroleum, forestry and earthmoving applications |
Purpose-built for the unforgiving operating conditions of heavy-duty Caterpillar equipment, the CAT 387-9433 (alternatively formatted 3879433) is an original-type diesel fuel injector engineered for Caterpillar C9 and C9 ACERT diesel engine platforms. It delivers direct fitment for core excavator models including 330D, 336D, 336D2 and 340D series units, with supplier-documented extended use across scrapers, compactors, motor graders, track type loaders, forestry machinery and petroleum power equipment.
This precision component meters and delivers exact volumes of diesel fuel into the combustion chamber at calibrated timing and spray pattern, atomizing pressurized fuel to optimize air-fuel mixing. Its design supports cleaner, more complete combustion, stabilizes idle performance, reduces rough operation, and maintains consistent engine torque under sustained heavy loads, while resisting damage from high vibration, extreme temperatures and variable jobsite loads.
It is cross-referenced with a full library of OEM, remanufactured and interchange part numbers for seamless supplier lookup. Always verify compatibility via engine serial number, machine serial number, arrangement number and existing injector part number before ordering, as worn injectors can cause hard starting, high fuel consumption, power loss, increased smoke and abnormal engine noise.
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