Brita Longlast+ OBL21 Longlast Filter Replacement

As an Amazon Associate I earn from qualifying purchases. Updated: March 27, 2026
Brita Longlast+ OBL21 Replacement Longlast Filter (OBL21-3)

The Brita Longlast+ OBL21 uses a Longlast Filter to reduce contaminants in your drinking water. Over time, the filter's effectiveness decreases, impacting taste and flow rate. Replacing the filter every 6 months ensures continued optimal performance and access to clean water.

$29.78$34.99Save $5.21 (15%)

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Key Features & Benefits

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

Who Should Buy This

This replacement filter is for Brita Longlast+ OBL21 owners experiencing reduced water flow or taste, wanting to extend their device's lifespan.

Not ideal for: If your Brita Longlast+ OBL21 is significantly damaged or outdated, a full replacement might be more cost-effective.

Good to Know Before Buying

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Always confirm your exact model number (OBL21-3) 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 Brita Longlast+ OBL21 Longlast Filter?

The part number is OBL21-3. Always verify this matches your exact model (OBL21-3) before ordering, as similar models may use different parts.

How often should I replace the Longlast Filter on my Brita Longlast+ OBL21?

every 6 months

Will aftermarket Longlast Filter replacements work in my Brita Longlast+ OBL21?

Third-party parts are widely available and often cheaper than OEM. Look for listings that specifically mention compatibility with model OBL21-3 and check buyer reviews for fit confirmation before purchasing.

Prices change frequently. See the latest deal on Amazon.

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