Grant Baffle Set Mpbs15 Multipass 90/140 & 110/140

Grant Baffle Set Mpbs15 Multipass 90/140 & 110/140

Grant Baffle Set – MPBS15

Genuine Replacement Baffle Set for Grant Multipass 90/140 & 110/140 Oil Boilers

The Grant MPBS15 Baffle Set is a genuine OEM replacement component for use in Grant Multipass oil boilers, specifically the 90/140 and 110/140 models. This baffle set plays a critical role in regulating the flow of hot flue gases within the heat exchanger, improving boiler efficiency and reducing flue gas temperatures.

Over time, baffles can become warped, corroded, or clogged with soot—leading to poor performance, reduced heat transfer, and increased fuel usage. Replacing them with this official Grant MPBS15 set helps restore optimal combustion efficiency and ensures your boiler remains compliant with emission standards. 

Key Features & Benefits

• Official Grant Part – MPBS15
  OEM-manufactured for perfect fit and reliable performance in compatible Multipass models.

• Improves Heat Exchange Efficiency
  Increases contact time of flue gases with the heat exchanger for maximum heat retention.

• Optimises Boiler Performance
  Helps maintain lower flue gas temperatures and higher seasonal efficiency.

• Reduces Fuel Consumption & Emissions
  Encourages complete combustion and energy efficiency over time.

• Pre-Formed for Easy Installation
  No modifications required—replaces existing baffles with minimal effort during servicing.

• Durable & Heat-Resistant Construction
  Built from materials that withstand high flue gas temperatures and continuous use. 

 Compatible Grant Boiler Models

This MPBS15 Baffle Set is specifically designed for:

• ? Grant Multipass 90/140 Oil Boiler

• ? Grant Multipass 110/140 Oil Boiler

Not sure if this part fits your model? Contact our team with your boiler serial number or model reference and we’ll confirm compatibility.

 When to Replace the Baffle Set

You should replace the baffles if:

• They are corroded, damaged, or warped from prolonged exposure to heat

• The boiler is showing signs of reduced efficiency or elevated flue gas temperatures

• You're performing a major service or combustion recalibration

• There is excessive soot or carbon build-up that cannot be adequately cleaned

• You're upgrading internal boiler components to meet performance or environmental standards

Regular inspection and timely replacement of baffles helps avoid unnecessary strain on your boiler and lowers running costs.  

Technical Specifications

• Part Number: MPBS15

• Manufacturer: Grant UK

• Component Type: Internal heat exchanger baffle set

• Material: Heat-resistant metal

• Application: Increases heat retention in the boiler chamber by directing flue gases

• Installation: Slot-in/stacked configuration within boiler heat exchanger

• Boiler Compatibility: Grant Multipass 90/140 & 110/140 models