As an Amazon Associate I earn from qualifying purchases.Updated: March 19, 2026
The Gasket in your Breville Infuser BES840 creates a watertight seal between the portafilter and the brewing head. This ensures proper pressure for extraction. Over time, the Gasket wears down, leading to leaks and reduced coffee quality. Replacing it regularly prevents potential damage to other parts.
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Function: Creates a waterproof seal between the portafilter and brewing head during espresso extraction
Signs it needs replacing: Visible wear or damage to the Gasket, leaking water during brewing, inconsistent extraction pressure
OEM vs aftermarket: OEM Gaskets (Breville branded) are generally more expensive but offer guaranteed fit and quality. Aftermarket Gaskets are often cheaper but may require more careful research to ensure compatibility.
Installation: Typically involves removing the old Gasket with a tool (may be included) and installing the new one, ensuring it sits flush. Consult your device manual for detailed instructions.
Replacement schedule: every 6 months
Compatibility warning: always verify part number matches your exact model before ordering
Pros & Cons
Pros
✓ Restores device to original performance without buying a new unit
✓ Significantly cheaper than a full device replacement
✓ Multiple options available from OEM and aftermarket sellers
Cons
✗ OEM parts cost more than third-party alternatives
✗ Wrong part number will not fit — model verification is essential
Common Use Cases
Scheduled maintenance: replacing on the every 6 months schedule
Performance restoration after noticing reduced output or efficiency
Preventive replacement before a worn part causes secondary damage
Who Should Buy This
This guide is for Breville Infuser BES840 owners experiencing leaks, reduced extraction quality, or inconsistent espresso shots. Replacing the Gasket can restore your machine's performance.
Not ideal for: If your Infuser BES840 has major malfunctions beyond a worn Gasket or requires frequent repairs, full device replacement might be more economical in the long run.
Good to Know Before Buying
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Always confirm your exact model number (BES840XL) before ordering. Part numbers vary between model variants and production years. Check the label on your device or original documentation to be sure.
Frequently Asked Questions
What is the part number for the Breville Infuser BES840 Gasket?
The part number is BGA8500. Always verify this matches your exact model (BES840XL) before ordering, as similar models may use different parts.
How often should I replace the Gasket on my Breville Infuser BES840?
every 6 months
Will aftermarket Gasket replacements work in my Breville Infuser BES840?
Third-party parts are widely available and often cheaper than OEM. Look for listings that specifically mention compatibility with model BES840XL and check buyer reviews for fit confirmation before purchasing.
Prices change frequently. See the latest deal on Amazon.