Perkins original  20R-9433 High Pressure Mechanical Diesel Engine Fuel Injector 235-9649 553-2592 for C9 330D 340D Excavator Parts original new injector

This Perkins C9 and C9 ACERT diesel fuel injector is engineered as a direct OE replacement covering primary part numbers 20R-9433, 387-9433, and 10R-7222. It also cross-references 557-7633, 20R-8064, 20R-8968, 328-2574, 293-4072, 267-3360, and 254-4339, giving fleet buyers and parts distributors a single SKU that matches multiple database searches. The injector is designed for the 8.8-liter C9 ACERT platform with 112 mm bore and 149 mm stroke, covering a 205-280 bkW (275-375 bhp) range at 1800-2200 rpm, and is fully compatible with MEUI / EUI electronic unit-injector systems.

The unit is built for precision fuel metering, optimized atomization, and stable combustion across demanding duty cycles. When properly installed and calibrated, it supports reliable cold starting, smooth idle, strong acceleration response, and reduced smoke output, and is compatible with low-sulfur and low-lubricity fuels. Each injector is flow-tested before shipment, with trim code support available, and is offered in new or remanufactured supply options with optional seal kits and export-safe packaging for international distribution.

The injector fits Perkins 330D, 330D L, 330D LN, 336D, 336D L, and 340D market applications, as well as C9-powered construction machinery, mining equipment, oilfield rigs, industrial power packs, generator sets, pump drives, compressor packages, excavators, loaders, and severe-duty off-highway equipment. Final compatibility must be confirmed by matching the old injector number, engine serial number, engine arrangement number, and machine serial number. Recommended service practices include scheduled fuel filter replacement, water-separator draining, clean fuel supply, air filter maintenance, correct engine oil, ECM code scanning, and return flow checks when symptoms such as hard starting, rough idle, black or white smoke, misfire, power loss, or elevated fuel consumption appear.