KitchenAid Blender and Attachment Guide

Choosing the right KitchenAid blender attachment and base model can be confusing, because the K150 and K400 platforms share many of the same jars and expansion packs. This guide walks through the blenders worth owning and the attachments that genuinely extend what they can do, so you can build a setup that handles everything from morning smoothies to small-batch sauces.

Top Picks

1. KitchenAid K400 Variable Speed Blender (KSB4027)

The K400 is the workhorse of the lineup, pairing a 56-ounce jar with variable speed control and dedicated programs for smoothies, ice crush and cleaning. Its Intelli-Speed motor adjusts power as ingredients change consistency, which is what makes it pull through frozen fruit and leafy greens without stalling. If you want one base that accepts the widest range of attachments, this is it.

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2. KitchenAid K150 3-Speed Ice Crushing Blender (KSB1332Y)

The K150 is the more compact, budget-friendly platform. It still crushes ice and blends smoothies well, but uses a simpler three-speed dial instead of variable control. Importantly, it accepts the same personal and small-batch jar expansion packs as the K400, so you are not locked out of accessories by buying the smaller machine.

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3. KitchenAid K400 with Personal Blending Jar (KSB4031)

This bundle is the shortcut for anyone who knows they want both a full-size pitcher and a to-go jar. You get the K400 base plus a personal blending jar with a travel lid, so you can blend a single smoothie and walk out the door without dirtying the large pitcher.

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4. 16-oz Personal Blender Jar Expansion Pack (KSB2030PJB)

The 16-ounce expansion pack turns any K150 or K400 into a personal blender. It threads onto the same blade assembly and includes a spill-resistant travel lid. This is the single most useful attachment if you already own a base and want to make individual portions.

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5. 6-oz Small Batch Jar Expansion Pack (KSB2040BBB)

The 6-ounce small-batch jar is built for the jobs a big pitcher does poorly: salad dressings, pesto, spice blends and baby food. The compact jar keeps small quantities near the blade so they actually circulate instead of spinning uselessly at the bottom of a large pitcher.

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What to Look For in a KitchenAid Blender Attachment

Compatibility is the first thing to confirm. KitchenAid designed the K150 and K400 to share a common blade-and-collar thread, which is why the personal and small-batch jars fit both. Before buying any attachment, match the model number on the bottom of your base to the compatibility list on the accessory packaging.

Next, think about jar material and capacity. The full-size pitchers are dishwasher-safe BPA-free plastic, while the personal jars prioritize portability with sealing travel lids. The 6-ounce jar trades capacity for circulation, so it is the right tool only for small, thick mixtures.

How to Choose Between the K150 and K400

Pick the K400 if you blend daily, want variable speed, or plan to make tougher mixtures like nut butters and thick frozen drinks. Choose the K150 if counter space and price matter more than fine speed control. Because both accept the same expansion jars, you can start with the K150 and add personal or small-batch jars later without regret.

Who These Attachments Are For

The personal jar pack suits commuters and gym-goers who want grab-and-go smoothies. The small-batch jar is ideal for cooks who make their own dressings and sauces. Households that do all of the above are best served by the K400 plus both expansion packs, giving one base three distinct blending modes.

Frequently Asked Questions

Do KitchenAid blender attachments fit all models?

No. The personal and small-batch jar expansion packs are designed for the K150 and K400 platforms. Always check your base model number against the accessory’s compatibility list before buying.

Can I use the K400 jar on a K150?

The full-size jars are tuned to their specific base. The personal (16-oz) and small-batch (6-oz) jars are the cross-compatible accessories shared between the K150 and K400.

Are the jars dishwasher safe?

The jars are BPA-free and top-rack dishwasher safe, though hand-washing the blade collar helps preserve the seal over time.

Is the K400 worth it over the K150?

If you value variable speed and a larger pitcher for tougher blends, yes. For occasional smoothies in a smaller kitchen, the K150 is the more sensible buy.

Can these blenders crush ice?

Both the K150 and K400 are rated for ice crushing, with the K400’s variable speed offering more control over texture.

What can the small-batch jar do that the pitcher cannot?

The 6-ounce jar keeps tiny, thick mixtures circulating near the blade, so dressings, pesto and baby food blend properly instead of spinning in the bottom of a large, mostly empty pitcher.

Building a Complete Blending Setup

The smartest way to buy into the KitchenAid system is to think in terms of jobs rather than gadgets. A single base covers daily smoothies and frozen drinks. Adding the 16-ounce personal jar pack turns that base into a grab-and-go blender for commuters, while the 6-ounce small-batch jar handles the precise, low-volume work that a full pitcher does badly. Because all three jars share the same blade collar, you can expand gradually as your needs grow rather than buying multiple separate appliances.

This modular approach also saves counter and cabinet space. Instead of owning a full-size blender, a bullet-style personal blender and a mini chopper, one KitchenAid base with the right jars consolidates those roles. For households that value a tidy kitchen, that consolidation is often worth as much as the performance itself, and it keeps replacement simple since jars and blades can be bought individually.

Related Reading

If you are comparing blender brands, see our Ninja blenders comparison and our Vitamix blenders review. For handheld options, read our guide to the best immersion blenders. Stand mixer fans should check the KitchenAid stand mixers comparison and our roundup of the best electric stand mixers. For more baking gear, see the best stand mixers for baking.