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12_7a525dc4-ca71-4b2e-a219-bdae5704652b - Northline Parts

Fuel Injector 1077733 for Cat 3114 3116 3126 3126B / 446B 446D Backhoes

SKU: NLT2T02664
$299.29 In Stock
$299.29
Sale price  $299.29 Regular price 
Ships for free in 2–4 business days.
This diesel fuel injector replaces Cat 107-7733 / 1077733 for compatible 3114, 3116, 3126 and 3126B engine applications, including selected 446B/446D machines.
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Compatible Models

We do our best to list all compatible models. Although this may be the part you need, your exact model may not appear below.

Compatible equipment / model
Cat engines 3114, 3116, 3126, 3126B applications using 1077733
Equipment Selected Cat 446B and 446D backhoe applications

Product Overview

A failing injector can cause hard starting, rough idle, cylinder misfire, smoke, excessive fuel consumption and low power. Correct injector operation is especially important on mechanically/electronically controlled Cat engine families where spray quality and fuel delivery directly affect combustion.

The 3114/3116/3126 family covers many machine and truck installations, and injector design can vary by engine serial number and fuel-system revision. Use 1077733 as the primary match and confirm engine serial/build before ordering.

Key Features & Performance

  • Replacement injector for selected Cat 3114/3116/3126 applications
  • Reference 1077733
  • Restores controlled fuel delivery and atomization
  • Useful for injector-related rough running, smoke and hard-start repairs

Specifications & Reference Numbers

  • Reference: 1077733
  • Part type: Diesel fuel injector

Before You Order

Verify engine serial number and injector reference before purchase. Cat 3116/3126 engines used multiple injector families that are not interchangeable.

Frequently Asked Questions

What should I use as the final fitment check? Use the listed part/reference numbers, your exact engine or machine model, and the physical configuration of the part being replaced. Serial-number and production changes can matter.

What are common reasons to replace this part? A failing injector can cause hard starting, rough idle, cylinder misfire, smoke, excessive fuel consumption and low power. Correct injector operation is especially important on mechanically/electronically controlled Cat engine families where spray quality and fuel delivery directly affect combustion.

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