Fleece Freedom Series Cylinder Head – Driver Side (FPE-61-10014-D) for 2017-2023 Duramax L5P

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The Fleece Freedom Series Cylinder Head – Driver Side (FPE-61-10014-D) is a high-performance, direct-fit replacement for 2017–2023 GM Duramax L5P diesel engines. Built from premium materials, it exceeds OEM standards, offering enhanced durability, improved coolant flow, and structural strength to support increased horsepower and torque. Suitable for both stock and modified engines, it ensures optimal combustion efficiency and long-term reliability, making it ideal for engine rebuilds or performance upgrades.

Total: $1,149.00
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Description

The Fleece Freedom Series Cylinder Head – Driver Side (FPE-61-10014-D) is a high-performance replacement component engineered specifically for 2017-2023 GM Duramax L5P diesel engines. Designed to meet or exceed OEM specifications, this cylinder head offers unmatched durability and reliability, making it ideal for both stock and modified applications. Precision-machined from premium materials, it features improved coolant flow and enhanced structural strength to handle increased horsepower and torque demands. Whether you’re rebuilding your engine or upgrading for performance, the Fleece Freedom Series Cylinder Head ensures optimal combustion efficiency and long-lasting performance. This driver-side unit is a direct-fit replacement, making installation straightforward for professional or experienced DIY mechanics.

Additional information
Weight 48.0 lbs
Dimensions 24.0 × 14.0 × 10.0 in
Fitment

Fitment

  • 2017 GM Silverado/Sierra 2500/3500 6.6L L5P Duramax
  • 2018 GM Silverado/Sierra 2500/3500 6.6L L5P Duramax
  • 2019 GM Silverado/Sierra 2500/3500 6.6L L5P Duramax
  • 2020 GM Silverado/Sierra 2500/3500 6.6L L5P Duramax
  • 2021 GM Silverado/Sierra 2500/3500 6.6L L5P Duramax
  • 2022 GM Silverado/Sierra 2500/3500 6.6L L5P Duramax
  • 2023 GM Silverado/Sierra 2500/3500 6.6L L5P Duramax
Features

Features

  • Re-manufactured OE casting
  • New valves, valve guides, springs, and valve seals
  • Pressure and leak tested
  • Multi-angle valve job
Installation

Installation

  • We recommend using GM head gasket (Grade C, 12727486)

Installation Guide

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About brand
Fleece Performance Engineering is a diesel performance manufacturer focused on reliability and precision engineering. The company designs parts that solve common diesel issues while supporting added power. Fleece products support daily driving, towing, and performance diesel trucks. Fleece engineers fuel system components, turbochargers, electronics, and emissions-compliant upgrades in house. Their parts improve efficiency, drivability, and long-term engine protection. Each product is tested for proper fit and consistent performance. Diesel owners trust Fleece for dependable upgrades. Whether maintaining a work truck or building for performance, Fleece delivers proven solutions designed for real-world use.
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