# Kobalt 40V Gen4 520 CFM Brushless Blower

> Kobalt 40V Gen4 520 CFM Brushless Blower (KLB 1040B-03) is a blower from Kobalt 40V. It is labelled 40 V, moves up to 520 CFM, blows at up to 120 MPH, has a brushless motor, and has a 5-year limited warranty.

- Line: [Kobalt 40V](https://powertoolgrid.com/lines/kobalt-40v/)
- Category: [Leaf blowers](https://powertoolgrid.com/compare/blower/)
- Status: current
- Data confidence: inferred (last verified 2026-10-08; [what this means](https://powertoolgrid.com/how-we-compare/#confidence))
- Page: https://powertoolgrid.com/products/kobalt-40v-gen4-520-cfm-blower/

## Specifications

| Spec | Value | Source |
|---|---|---|
| Model number | KLB 1040B-03 | [lowes.com](https://web.archive.org/web/20250906051920/https://www.lowes.com/pd/Kobalt-40V-520CFM-Blower-Bare/5005348357) (retailer, archive, 2025-09-06) |
| Voltage on the label | 40 V | [lowes.com](https://web.archive.org/web/20260818231244/https://www.lowes.com/pd/Kobalt-Gen4-40-volt-520-CFM-120-MPH-Brushless-Handheld-Cordless-Electric-Leaf-Blower-4-Ah-Battery-Charger-Included/5002904975) (retailer, archive, 2026-08-18) |
| Batteries it takes at once | not published |  |
| Weight | not published |  |
| Air volume | 520 CFM | [lowes.com](https://web.archive.org/web/20260818231244/https://www.lowes.com/pd/Kobalt-Gen4-40-volt-520-CFM-120-MPH-Brushless-Handheld-Cordless-Electric-Leaf-Blower-4-Ah-Battery-Charger-Included/5002904975) (retailer, archive, 2026-08-18) |
| Air speed | 120 MPH | [lowes.com](https://web.archive.org/web/20260818231244/https://www.lowes.com/pd/Kobalt-Gen4-40-volt-520-CFM-120-MPH-Brushless-Handheld-Cordless-Electric-Leaf-Blower-4-Ah-Battery-Charger-Included/5002904975) (retailer, archive, 2026-08-18) |
| Brushless motor | yes | [lowes.com](https://www.lowes.com/pd/Kobalt-Gen4-40-volt-520-CFM-120-MPH-Brushless-Handheld-Cordless-Electric-Leaf-Blower-4-Ah-Battery-Charger-Included/5002904975) (retailer, search, 2026-10-08) |
| Warranty | 5 yr | [lowes.com](https://web.archive.org/web/20260818231244/https://www.lowes.com/pd/Kobalt-Gen4-40-volt-520-CFM-120-MPH-Brushless-Handheld-Cordless-Electric-Leaf-Blower-4-Ah-Battery-Charger-Included/5002904975) (retailer, archive, 2026-08-18) |

## Where to buy

| Store | Price (USD) | Availability | Checked | Link |
|---|---|---|---|---|
| Lowe's | not checked | unknown | — | [View at Lowe's](https://www.lowes.com/pd/Kobalt-40V-520CFM-Blower-Bare/5005348357) |

Prices are re-checked weekly; a date more than a month old means the store could not be re-read.

## The same tool on other platforms

Same category, different line:

- [BLACK+DECKER 40V MAX Leaf Blower/Sweeper (LSW40C)](https://powertoolgrid.com/products/black-decker-40v-max-lsw40c/)
- [BLACK+DECKER 40V MAX POWERCOMMAND Sweeper (LSW36)](https://powertoolgrid.com/products/black-decker-40v-max-lsw36/)
- [BLACK+DECKER 40V MAX Leaf Blower and Vacuum](https://powertoolgrid.com/products/black-decker-40v-max-lswv36b/) — $118.99
- [Craftsman V60 Brushless Axial Blower](https://powertoolgrid.com/products/craftsman-v60-axial-blower/)
- [Craftsman V20 380 CFM Axial Blower](https://powertoolgrid.com/products/craftsman-v20-cmcbl700b/)
- [Craftsman V20 Brushless 350 CFM Axial Blower](https://powertoolgrid.com/products/craftsman-v20-cmcbl720/)
- [Craftsman V20 BRUSHLESS RP 410 CFM Axial Blower](https://powertoolgrid.com/products/craftsman-v20-cmcbl730/)
- [Craftsman V20 125 CFM Compact Handheld Blower](https://powertoolgrid.com/products/craftsman-v20-cmcbl0100b/)


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PowerToolGrid lists battery yard tools from every brand side by side, with a source for every spec. [How we compare](https://powertoolgrid.com/how-we-compare/). Data as of 2026-10-29.