# MOWFILL 2 Pack 78601 Air Filter with Pre Filter Replace Generac 078601 078601GS 178601GS Fits 4000XL 3000XL 3500XL XP4000 XG4000 GN3800 GN4500 5700CP 6300CP 6600CP MC1009 MC1259 MC4000 MC6600 — resale value

Source: JunkPal price guide — https://junkpal.ai/products/mowfill-2-pack-78601-air-filter-with-pre-filter-replace-generac-078601-b092w6p26g

**MOWFILL 2 Pack 78601 Air Filter with Pre Filter Replace Generac 078601 078601GS 178601GS Fits 4000XL 3000XL 3500XL XP4000 XG4000 GN3800 GN4500 5700CP 6300CP 6600CP MC1009 MC1259 MC4000 MC6600** sells for about **$12.99** new or sealed, based on real closed eBay sales.

Live listings and the full sold-price history are on the page: https://junkpal.ai/products/mowfill-2-pack-78601-air-filter-with-pre-filter-replace-generac-078601-b092w6p26g

## Value

| Condition | Value (USD) |
| --- | --- |
| New / Sealed | $12.99 |

Values are medians of real closed eBay sales, updated 2026-07-16. They are estimates for reference, not offers or appraisals — condition, completeness and edition move them a lot, so compare against the sold listings before pricing anything.

## Check the market

- [Sold listings on eBay](https://junkpal.ai/api/go?to=https%3A%2F%2Fwww.ebay.com%2Fsch%2Fi.html%3F_nkw%3DMOWFILL%252078601%2520air%2520filter%2520pre%2520filter%26LH_Sold%3D1%26LH_Complete%3D1%26mkcid%3D1%26mkrid%3D711-53200-19255-0%26siteid%3D0%26campid%3D5339166094%26toolid%3D10001%26mkevt%3D1%26customid%3Dmd-sold&p=md-sold) — the closed sales these medians are computed from
- [Live listings on eBay](https://junkpal.ai/api/go?to=https%3A%2F%2Fwww.ebay.com%2Fsch%2Fi.html%3F_nkw%3DMOWFILL%252078601%2520air%2520filter%2520pre%2520filter%26mkcid%3D1%26mkrid%3D711-53200-19255-0%26siteid%3D0%26campid%3D5339166094%26toolid%3D10001%26mkevt%3D1%26customid%3Dmd-live&p=md-live) — what sellers are asking right now

eBay links are affiliate links: JunkPal may earn a commission at no cost to you.

## Details

| Field | Value |
| --- | --- |
| Brand | MOWFILL |
| Category | Outdoor Power Tools |

## About

This listing is for a 2 Pack of MOWFILL 78601 Air Filter with Pre Filter, which replaces Generac part numbers 078601, 078601GS, 178601GS. It is designed for various Generac models including 4000XL, 3000XL, 3500XL, XP4000, XG4000, GN3800, GN4500, 5700CP, 6300CP, 6600CP, MC1009, MC1259, MC4000, and MC6600.

This item is sought by owners and repair professionals maintaining compatible Generac outdoor power tools.

Resale value is determined by the condition of the filters and whether the complete 2-pack set is present.

## FAQ

**What models does this air filter set fit?**

This set fits various Generac models including 4000XL, 3000XL, 3500XL, and several CP and MC series units.

**What is the primary function of this item?**

It serves as a replacement air filter and pre-filter for specified Generac outdoor power tools.

**What factors influence the resale value of these filters?**

The condition of the filters and the completeness of the 2-pack set are key factors in determining its value.

---

Full price guide: https://junkpal.ai/products/mowfill-2-pack-78601-air-filter-with-pre-filter-replace-generac-078601-b092w6p26g
How these values are computed: https://junkpal.ai/methodology
Cite as: "JunkPal price guide value as of 2026-07-16, based on real sold listings (junkpal.ai)"