Genuine Ford Balance Shaft Thrust Washer for Ford EcoSport 1.0 EcoBoost / Focus 1.5 EcoBoost F1FZ6359B

Genuine Ford balance shaft thrust washer for Ford Ecosport 2018-2021 1.0 Focus 2015-2018 1.5 EcoBoost, part number F1FZ6359B is an important component in the EcoBoost engine’s balance shaft system. It is responsible for locating and controlling the balance shaft’s axial clearance, helping reduce friction, limit wear, and ensure the balance shaft operates accurately throughout use.

On the Ford Ecosport 2018-2021 with the 1.0L EcoBoost engine and the Ford Focus 2015-2018 with the 1.5L EcoBoost engine, the balance shaft is designed to eliminate vibrations generated during engine operation. The balance shaft thrust washer is installed at the shaft end to maintain the correct operating clearance, helping the shaft rotate smoothly, reduce vibration, lower noise, and improve engine refinement.

The washer is manufactured to Ford genuine standards from an alloy material with strong wear resistance, heat resistance, and load-bearing capability. Its precision-machined surface helps ensure concentricity, good lubrication performance, and stable operation under continuous engine conditions.

After a period of use, the washer may wear, deform, or become scratched due to friction and insufficient lubrication. When this happens, the balance shaft clearance may exceed specifications, causing abnormal knocking, increased engine vibration, or reduced service life of the balance shaft and related components.

Genuine Ford part F1FZ6359B is manufactured to original specifications, ensuring high precision, outstanding durability, and full compatibility with Ford Ecosport 1.0 EcoBoost 2018-2021 and Ford Focus 1.5 EcoBoost 2015-2018.

Product information

• Product name: Balance shaft thrust washer / Balance Shaft Thrust Washer
• Part number: F1FZ6359B/ F1FG33252CA
• Brand: Genuine Ford
• Applicable models: Ford Ecosport, Ford Focus
• Model years: Ford Ecosport 2018-2021; Ford Focus 2015-2018
• Engine: 1.0L EcoBoost; 1.5L EcoBoost
• Installation location: On the engine balance shaft (Balance Shaft)
• System: Engine – Balance shaft system
• Condition: New

Functions and role

• Locates and controls balance shaft axial clearance
• Reduces friction and helps limit component wear
• Helps the balance shaft operate stably and accurately
• Reduces engine vibration and noise
• Helps extend the service life of the balance shaft system

Key advantages

• High-quality genuine Ford part
• Precision-machined to original specifications
• Good wear resistance and heat resistance
• High durability for long-term stable operation
• Accurate fit and full compatibility with the original engine

Signs it needs inspection or replacement

• Engine vibration is greater than normal
• Knocking noises from the balance shaft area
• The washer is worn or deformed during engine inspection
• Balance shaft clearance exceeds technical specifications
• The engine makes abnormal noise after a period of use

👉 Although the balance shaft thrust washer is a small component, it plays an important role in maintaining balance shaft precision and reducing engine vibration. When the engine is overhauled or the washer shows wear, it should be replaced with a genuine part to ensure stable operation and engine longevity.

Replacement recommendations

• Use the correct F1FZ6359B part for Ford Ecosport 1.0 EcoBoost 2018-2021 and Ford Focus 1.5 EcoBoost 2015-2018
• Inspect the balance shaft, shaft bushings, and related bearings at the same time
• Check the lubrication system and engine oil pressure
• Replace gaskets and seals if the engine must be disassembled
• Use the correct Ford-spec engine oil after reassembly
• Prefer genuine Ford parts to ensure accuracy, durability, and long-term compatibility.