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12_f0ef866b-53fb-403d-8667-0e82489ccfd2 - Northline Parts

Turbo T04B91 Turbocharger 4N6858 for Caterpillar Loader 941 951B 951C 955K 955L

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The Aftermarket Parts Specialists

$593.59
Sale price  $593.59 Regular price 

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This Turbo T04B91 Turbocharger is a high-quality aftermarket replacement part compatible with Caterpillar Loader 941, 951B, 951C, 955K, 955L and matches OEM Part# 4N6858.
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I reached out for some replacement head bolts and they responded quickly with a few questions and cautionary information and is sending me some bolts. Great customer service! Thanks

Edward H. — Verified customer

Product Overview

This heavy-duty T04B91 turbocharger is engineered to restore power and efficiency to Caterpillar loaders. Built for durability in demanding environments, it provides reliable performance and a precise fit for specific CAT machinery.

Key Features & Performance

  • Durability: Manufactured with high-grade materials to withstand extreme temperatures and pressure.
  • Precision Engineering: Designed to meet or exceed OEM performance standards for optimal boost and airflow.
  • Direct Replacement: Bolt-on installation for seamless integration with existing engine components.

Fitment & Compatibility

  • Compatible Models: Caterpillar Loader 941, 951B, 951C, 955K, 955L
  • Part Number(s): 4N6858, T04B91

Technical Specifications

  • Model: T04B91
  • Application: Heavy-Duty Caterpillar Loaders
  • Part Type: Turbocharger

Frequently Asked Questions

Q: Does this turbocharger include the necessary gaskets for installation?

A: Most units are supplied as the turbocharger only; please verify if additional installation hardware is included in the specific package.

Q: Is this unit a new aftermarket part or a remanufactured unit?

A: This is a brand new high-quality aftermarket replacement part designed for long-term service life.

Compatibility may vary by serial number. Verify fitment before purchase.

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