3/8 Bsp Filter Complete Mb438 Fag

3/8 Bsp Filter Complete Mb438 Fag

3/8" BSP Filter Complete – MB438 FAG | Oil Line Fuel Filter Assembly
Robust and Reliable Fuel Filtration for Domestic Oil Boilers

Product Summary

The MB438 FAG 3/8" BSP Complete Filter is a high-quality inline oil filter unit designed for use in domestic and light commercial heating systems. With its durable construction and integrated replaceable element, this filter provides reliable protection for your burner and oil supply line by removing contaminants such as sludge, water, and debris. Ideal for use with heating oil (kerosene or gas oil), the MB438 ensures clean fuel delivery and helps prevent costly burner failures or system blockages.

Key Features

• Complete filter assembly – includes housing, filter element, and seal

• 3/8" BSP thread – standard fitment for most domestic oil heating systems

• Efficient filtration – traps dirt, rust, and particulates to protect burner and pump

• Removable bowl for easy inspection and cleaning

• Simple installation and maintenance

• Durable FAG construction – suitable for kerosene and gas oil

Compatible Boiler & Burner Models

This filter is widely used across a range of oil boiler systems, including:

• Firebird, Grant, Warmflow, Trianco, and similar oil boilers

• Any burner systems using 3/8" BSP inline filters

• Compatible with both gravity-fed and pumped oil systems

Please confirm your system’s thread size and fuel type before purchase.

When to Replace

• Annually during routine boiler service

• If fuel flow is restricted or burner lockouts occur

• When visible sludge or water contamination is present

• Every 12 months or when changing oil tank or fuel supply line

• If filter element shows signs of wear or damage

Technical Specifications

• Model: MB438 FAG

• Thread Size: 3/8" BSP (British Standard Pipe)

• Filter Type: Inline bowl-type fuel filter

• Includes: Filter body, bowl, filter element, gasket/seal

• Fuel Compatibility: Kerosene (28 sec), Gas Oil (35 sec)

• Application: Domestic oil-fired boilers and burners