original 392-9046 Diesel Engine Fuel Injector Replacement for 304-3637 382-0709 456-3493 20R-5036 new injector original new injector

Engineered specifically for the C9.3 and C9.3 ACERT common rail platforms, this diesel fuel injector carries the primary OE reference 392-9046 / 3929046 and is validated against an extensive cross-reference list including 304-3637, 324-5467, 342-5487, 363-0493, 364-8024, 367-4293, 382-0709, 417-3013, 456-3493, 456-3509, 456-3544, 456-3545, 456-3579, 456-3589, 171-9704, 196-1401, 222-5966, 20R-5077, 20R-5078, 20R-5079, 20R-5036, 20R-5073, 20R-5075, and 460-8213. The injector is fully compatible with C9.3B industrial engines rated 250–340 kW / 335–456 hp at 1800–2200 rpm, supporting emission configurations such as U.S. EPA Tier 4 Final, EU Stage V, China Nonroad Stage IV, Japan 2014, and Korea Stage V.

Precision-machined nozzles and high-pressure atomization ensure stable rail pressure, balanced cylinder-to-cylinder flow, and reliable cold-start performance across the entire C9.3 family, including marine propulsion, auxiliary, and generator-set variants. Industrial-grade metallurgy, electronic injection compatibility, and heavy-duty construction provide long service life in excavators such as the 336E and 336F, construction machinery, mining support equipment, oil and gas power modules, diesel generator sets, and material handling machinery. Strong global parts availability through multiple searchable OE and cross-reference numbers supports aftermarket distribution, fleet maintenance, and reman/exchange programs.

Before installation, confirm the part number, engine serial number, engine arrangement, emissions configuration, and ECM requirements. Clean the work area, replace seals and filters, inspect fuel lines, seat the injector correctly using official torque specifications, program injector trim codes if required, and perform leak testing, start-up testing, smoke inspection, and diagnostic code scanning after installation.