CAT 449-3315 Common Rail Fuel Injector

Product Overview

The CAT 449-3315 Common Rail Fuel Injector is a genuine Caterpillar electronically controlled fuel injector engineered to deliver precise, high-pressure fuel injection for optimum diesel engine performance. Controlled by the engine’s Electronic Control Module (ECM), it accurately meters the required fuel quantity and injects it at the correct timing to ensure efficient combustion, maximum power, improved fuel economy, and reduced exhaust emissions.

Designed for use with the Cat® C4.4 diesel engine, the 449-3315 injector incorporates advanced metallurgy and precision manufacturing to withstand the high injection pressures of modern common-rail fuel systems. It is a direct OEM replacement that meets Caterpillar’s stringent quality, durability, and performance standards.

Key Features

• Genuine Caterpillar OEM common-rail fuel injector
• High-pressure electronically controlled fuel injection
• Precision fuel metering for optimum combustion efficiency
• Advanced metallurgy for durability under extreme injection pressures
• Supports improved engine power and fuel economy
• Helps reduce emissions and maintain engine performance
• Engineered for modern common-rail diesel fuel systems
• Factory-tested to Caterpillar quality and reliability standards
• Direct-fit replacement for specified Cat engine applications
• Covered by Caterpillar’s standard parts warranty, subject to applicable warranty terms

Primary Engine Application

• Caterpillar C4.4 Diesel Engine
• Caterpillar C4.4 Industrial Engine

Compatible Caterpillar Equipment

According to the Caterpillar parts catalogue, the CAT 449-3315 injector is used in a wide range of equipment, including:

Excavators

• 313D2
• 313D2 GC
• 318D2
• 318D2 L
• 320
• 320 GC
• 320 GX
• 320D2
• 320D2 GC
• 320GX

Wheeled Excavators

• M315
• M315 GC
• M315D2
• M317
• M317D2
• M318

Track-Type Tractors

• D3K2 XL
• D3K2 LGP
• D4K2 XL
• D4K2 LGP
• D5K2 XL
• D5K2 LGP

Asphalt Pavers

• AP500
• AP500F
• AP555
• AP555F

Asphalt Compactors

• CB7
• CB8
• CB10
• CB13
• CB15
• CB16

Soil Compactors

• CP7
• CP11
• CP44B
• CS11
• CS44B
• CS54B
• CS64B

Pneumatic Compactors

• CW-12
• CW-16
• CW-34
• CW34

Generator Sets

• C4.4
• C4.4DE65E3
• C4.4DE88E0
• C4.4DE88E3
• C4.4DE110E
• C4.4DE110E2
• XQP100

Other Applications

• C4.4 Industrial Engine
• SPF343C Pumper

Additional Compatibility Information

The CAT 449-3315 Common Rail Fuel Injector is primarily designed for Caterpillar equipment powered by the C4.4 engine platform. Because equipment configurations may vary by serial number, emissions certification, and production year, compatibility should always be confirmed using the machine Product Identification Number (PIN) or Engine Serial Number (ESN) before ordering.

Benefits

Installing a genuine CAT 449-3315 Common Rail Fuel Injector helps:

• Restore original engine performance
• Deliver precise fuel atomization for efficient combustion
• Improve fuel economy
• Reduce exhaust emissions
• Ensure reliable engine starting and smooth operation
• Protect the high-pressure fuel system through OEM-quality engineering
• Maximize service life and reliability in demanding operating conditions