Dmsmisi Ninja blender replacement 7-fin bottom blade assembly, 2-pack with gaskets & tool (fits BL480-30, BN401)

These are two Dmsmisi 7-fin replacement bottom blade assemblies engineered to fit a wide range of Ninja Nutri Ninja and Auto-iQ single-serve blender pitchers.

When your original Ninja extractor blade becomes dull, wobbly, or leaks, swapping in a fresh set restores chopping power and safer sealing. Dmsmisi supplies two complete bottom blade assemblies with preinstalled gaskets, plus extra rubber gaskets, a gasket-replacement tool, and a cleaning brush so you can replace and maintain the part without searching for obscure components.

Which Ninja models will these replacement blades work with?

These blades were designed to be compatible with many Nutri Ninja and Auto-iQ single-serve units; confirm your model before ordering. They match the blade diameter and mounting style used by the listed BL and BN series pitchers.

• Compatible models include BL480-30, BL482-30, BL490-30, BL640-30, BL642-30, BL682-30
• Also fits BN401, BN751, BN801, BL2012, NN102 and similar single-serve containers
• Measure existing blade diameter (~4 inches / 10 cm) and check thread type to ensure a perfect fit

How do these 7-fin blades improve blending performance?

The updated seven-fin design adds a top blade and refined balance for more consistent cutting and fewer vibrations. That results in smoother smoothies and quicker processing of frozen or fibrous ingredients.

• Seven fins increase surface contact for faster particle breakdown
• New top blade helps shuttle ingredients downward for even blending
• Balanced construction reduces wobble and drivetrain wear

What materials and maintenance should I expect?

Each assembly combines food-grade stainless steel cutting edges with durable plastic housings and dishwasher-safe components for easy upkeep. The kit includes spare gaskets and a small brush to keep seals clean and prevent leaks.

• Blade diameter ~4 in (10 cm) with stainless steel fins for longevity
• Plastic housing designed to match original part fit and alignment
• Comes with two extra rubber gaskets, gasket tool, and cleaning brush

How do I install these parts and avoid leaks?

Installation is straightforward: remove the old assembly, confirm gasket seating, and thread the new blade assembly into the pitcher base until snug. Use the included gasket-replacement tool to position the rubber seal correctly and tighten by hand to prevent over-torquing.

• Always inspect and replace worn gaskets to maintain a watertight seal
• Hand-tighten; avoid power tools which can strip threads
• Run a short water-only cycle after installation to check for leaks

Who is this for: These replacement blade assemblies are ideal for Ninja owners who want to revive single-serve pitchers without buying a full new system. They're suited to home cooks who regularly make smoothies, frozen drinks, and sauces, as well as anyone who keeps spares handy to minimize downtime. Confirm your blender model and blade diameter before purchase to ensure compatibility.