Caterpillar original  10R-9348 171-9710 222-5965 Common Rail Fuel Injector Assembly for 3126B C7 C9 3126E 7.2L Engine Excavator Spare Parts new original new injector

The CAT 10R-9348 fuel injector is engineered as a genuine OEM replacement component for Caterpillar 3126, 3126B, 3126E, and C7 diesel engines. Designed to meet original equipment performance specifications, this injector delivers precise fuel metering and consistent atomization to support efficient combustion across demanding operating conditions. The heavy-duty industrial construction ensures long service life and reliable performance in commercial trucks, construction machinery, generator sets, marine equipment, and agricultural machinery.

Manufactured to strict OEM quality standards, the 10R-9348 injector provides enhanced engine power, improved fuel efficiency, and reduced smoke emissions. Each unit is 100% performance tested to verify fuel delivery volume, spray pattern, and injector balance before shipment. The component supports cross-reference numbers 175-3700, 0R-8479, and related equivalents, allowing flexible replacement across compatible engine platforms and simplifying inventory management for distributors, fleet operators, and service workshops.

Proper installation and routine maintenance are essential to achieve maximum service life. Operators should use high-quality diesel fuel, replace fuel filters at recommended intervals, and avoid contaminated fuel sources. Before installation, the fuel system must be thoroughly cleaned, injector bores inspected, and new sealing washers and O-rings fitted according to manufacturer torque specifications. Following installation, fuel pressure verification and leak testing should be performed to confirm reliable heavy-duty operation in industrial, marine, and on-highway applications worldwide.