CAT 3116 Fuel Injector 127-8211 High-Performance Diesel Injector For Caterpillar Engine

Caterpillar 3116 Fuel Injector – Part Number 127‑8211

The Caterpillar 127‑8211 Fuel Injector is a high‑quality replacement component designed for the CAT® 3116 diesel engine. Engineered to deliver precise fuel metering and atomization, this injector ensures optimal combustion efficiency, reduced fuel consumption, and reliable engine performance in demanding operating environments.

 

Manufactured to Caterpillar OEM specifications, the 127‑8211 injector features advanced nozzle geometry and precision‑machined internal components. This design allows for consistent fuel delivery at high pressures, ensuring smooth acceleration, strong torque output, and lower emissions. The rugged construction provides excellent wear resistance and long service life, even under continuous heavy‑duty use.

 

 

Engine Model: Caterpillar 3116

Engine Type: Inline 6‑cylinder, 4‑stroke diesel

Displacement: 6.6 liters

Fuel System: Mechanical Unit Injector (MUI)

Rated Power Range: 170–350 HP (depending on application)

Injection Pressure: High‑pressure mechanical actuation for efficient combustion

Installation Specifications

Direct‑fit OEM replacement – no modification required

Install into cylinder head fuel bore following CAT service manual torque and sealing procedures

Ensure proper sealing with new O‑rings and copper washers during installation

Recommended torque for injector hold‑down bolts: follow Caterpillar service guidelines

Compatible with factory fuel rail and rocker arm actuation system

 

 

Powering Performance Across Industries: The Versatile CAT 3116 Engine & 127-8211 Injector

From highways to job sites and beyond, this rugged diesel duo delivers dependable power where it counts:

On the Road

The backbone of medium-duty fleets (Freightliner, GMC, Ford F-Series diesel conversions)

Trusted by municipal and school bus operators

On the Job Site

Muscle behind CAT 953/963 track loaders for earthmoving

Workhorse in CAT 938 wheel loaders for material handling

On the Water

Reliable propulsion for commercial workboats

Preferred power for tough fishing vessel applications

Behind the Scenes

Critical backup power for hospitals and data centers

Prime power for remote industrial operations

Why Customers Choose This Combination:

Proven durability in 24/7 operation environments

Interchangeable across multiple equipment platforms

Supported by extensive aftermarket parts networks

 

 

 

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