Caterpillar original C9.3 Diesel Engine Common Rail Fuel Injector 20R-5036 Cross Reference 456-3509 for Excavator, Replacement for OEM 456-3493, 456-3544 original new injector
Product Details
Caterpillar original C9.3 Diesel Engine Common Rail Fuel Injector 20R-5036 Cross Reference 456-3509 for Excavator, Replacement for OEM 456-3493, 456-3544 original new injector
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Fuel Type |
Diesel |
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Condition |
Varies by supply channel: official Caterpillar channel units are Cat Reman; other available configurations include genuine, rebuilt, remanufactured, and aftermarket replacement |
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Applicable Engine |
Primary fit for Caterpillar C9.3 diesel engines; commonly cataloged for C9.3B engine families. C9 compatibility is not universally confirmed. Pre-shipment verification via engine arrangement number, serial prefix, emissions configuration, and injector trim data is required |
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Injector Type |
Common Rail Diesel Fuel Injector (Injector GP Fuel) |
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Quality Standard |
Industrial-grade heavy-duty construction; Cat Reman specification applies to official Caterpillar channel units |
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Packaging |
Not specified |
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Fuel System |
Common Rail Fuel Injection System |
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OE Number |
20R-5036 (alternate formatting: 20R5036, CA20R5036) |
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Brand |
CAT (Caterpillar) |
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Cross Number / Universal Number |
High-confidence cross references: 456-3493 (4563493, CA4563493), 363-0493 (3630493). Lower-confidence supplier-listed related numbers: 456-3589, 20R-1318, 20R-5079, 173-9268, 198-7912, 460-8213, 342-5487, 417-3013, 304-3637 (all require confirmation via engine serial number and injector trim requirements before ordering or installation) |
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Vehicle / Equipment Application |
Commonly compatible with CAT models: 336E, 336F, 336EL, 336FL, 966K, 972K, D6T, D7E, 627H, 568 FM, 12M 2, 140M 2, 160M 2. Additional supplier-listed models: 340E, 340F, 349E, 349F. Suitable equipment categories include excavators, wheel loaders, track type tractors, wheel tractor scrapers, motor graders, forestry machines, construction machinery, mining equipment, and industrial diesel engines. Compatibility must be confirmed via machine serial number, engine serial number, injector number, and official Caterpillar parts catalog |
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Application Type |
Heavy-duty industrial diesel applications across construction, mining, forestry, industrial power, and heavy equipment maintenance |
Precision-calibrated for Caterpillar C9.3 engine platforms, the 20R-5036 is an industrial-grade common rail diesel fuel injector (Injector GP) designated as a Cat Reman component through official Caterpillar parts channels. Its verified primary OE number is 20R-5036, with alternate formatting including 20R5036 and CA20R5036. High-confidence cross references include 456-3493 (4563493/CA4563493) and 363-0493 (3630493), while additional supplier-listed numbers require formal validation before use.
This injector is primarily engineered for Caterpillar C9.3 diesel engines, with widespread alignment to C9.3B engine families across global parts catalogs. It fits a broad range of heavy-duty CAT equipment, such as 336E/336F excavators, 966K/972K wheel loaders, D6T/D7E track tractors, 627H scrapers, M2-series motor graders, and 568 FM forestry machines. Universal fitment for C9 engines is not guaranteed, so all applications require verification of engine arrangement, serial number, emissions configuration, and trim data.
The injector meters, atomizes, and delivers diesel fuel into combustion chambers at the correct timing, quantity, and spray pattern specified for Caterpillar C9.3 platforms. It serves a diverse B2B customer base including repair shops, diesel injection workshops, fleet owners, mining contractors, construction machinery dealers, and global spare parts distributors. All customers must confirm machine model, engine serial number, injector part number, and ECM trim file before ordering to ensure correct fitment.
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