Choosing the right starter key for your lawn mower is one of those small decisions that saves a lot of frustration. A correct replacement key gets your mower running quickly and avoids wasted trips to the dealer. These recommendations come from broad market research, hands-on fit testing across multiple ignition switches, and analysis of consumer feedback and technical specs.
Methodology
We evaluated available replacement starter keys by combining three approaches:
- Hands-on testing: Fitted each key on representative ignition switches (Indak-style switches, common tractors and mower brands) to check fit, wobble, and insertion/removal feel. We also cycled keys repeatedly to spot deformation or finish wear.
- Compatibility and technical checks: Cross-checked part numbers and fit lists from manufacturer documentation and seller descriptions to confirm model coverage. Key dimensions and part-number matches were prioritized where available.
- Real-world signals: Studied customer feedback (fit reports, durability complaints), return rates, and value per pack. Price, pack size, and ease of installation influenced rankings.
Key evaluation criteria (weighted): Compatibility & fit, Build quality/durability, Value (pack size vs price), and Availability. These factors drove the final placement and category awards.
2-Pack Ignition Keys
Affordable 2-pack replacement set compatible with a wide range of Cub Cadet, MTD and Troy-Bilt tractors. Simple, functional keys that restore ignition quickly — a practical, low-cost option for owners who need an exact-fit aftermarket key.
Why this is the Best Budget Pick
This inexpensive 2-pack targets Cub Cadet/MTD/Troy-Bilt owners and includes the commonly used part numbers 625-05000 / 625-05002 and multiple 725/925 listings. In testing it delivered a snug fit for the listed models and inserted/removed cleanly with minimal wobble. Construction is typical aftermarket metal alloy: serviceable and rust-resistant for normal use but not plated to OEM finishes. If you need a quick, affordable replacement for popular Cub Cadet or MTD tractors, this set gets the job done without a premium price. Potential downsides: it's not OEM and some older switches with heavy wear may require minor filing for a perfect fit.
Femory Universal Key
Universal 430-009 key built to fit many Briggs & Stratton, Kohler, Husqvarna, Scag and AYP ignition switches. Machined to restore reliable starter engagement — ideal if you need one key to cover multiple machines.
Why this is the Premium Choice
The 430-009 universal key has excellent cross-brand coverage (Briggs & Stratton, Kohler, Husqvarna, AYP, Scag and more). In our hands-on fitting tests it matched Indak-style switches with consistent engagement, and the thicker, well-machined shank resisted deformation across repeated cycles. Where premium matters — such as commercial or heavy-use residential mowers — the sturdier finish and precise tolerances minimize play and contact issues. Downsides: like other aftermarket parts it’s not OEM and on some very old switches you may need to adjust the switch sleeve or lightly file the key for a perfect fit. Overall, this is the best single-key solution if you want reliability and broad compatibility.
6-Pack Universal Keys
Six universal 430-series keys plus two key rings — excellent spare supply for households or small fleets. Rust-resistant material and broad compatibility make this a smart buy if you like having backups.
Why this is Best Value for Money
This 6-pack of 430-type keys is priced to deliver the lowest cost per key while covering many Indak-style switches. We tested multiple keys from the pack and found consistent machining and acceptable durability for residential use. The included key rings are a practical touch, and six keys mean you can keep spares in the garage, shed, or with a neighbor. The build isn't as robust as premium single-piece options, so for heavy commercial use choose a thicker, premium key. For typical homeowner needs, however, this pack is hard to beat on cost and convenience.
John Deere Replacement Key
Dedicated replacement keyed to John Deere part numbers (GY20680 and equivalents). Excellent fit for John Deere tractors and many compatible mowers — a dependable choice for Deere owners who need an exact OEM-style replacement.
Why this is the Editors' Choice
This key is tailored for John Deere models (GY20680/GX24332/AM131946 and others) and delivered the most trouble-free, OEM-like fit in our tests on John Deere tractors and compatible compact tractors. Because it targets a specific brand and part family, it minimizes fitment issues tied to tolerance mismatches you sometimes see with universal keys. The inexpensive price and consistent quality make it an excellent pick for Deere owners who want a near-OEM experience without the dealer markup. Limitation: it’s not universal — choose this only if your machine is listed among the supported John Deere models.
Comparison Overview — Key Differences
- Compatibility: Femory 430-009 (Premium Choice) offers the broadest cross-brand coverage for Indak-style switches. The John Deere Replacement Key (Editors' Choice) provides the most reliable brand-specific fit for Deere machines.
- Value: The XYQMLY 6-Pack (Best Value) gives the lowest cost per key and comes with key rings for convenience. The Notonmek 2-Pack (Best Budget) is the cheapest tidy two-key option for MTD/Cub Cadet/Troy-Bilt owners.
- Build & Durability: Premium keys (Femory 430-009) present tighter tolerances and sturdier shanks for commercial or frequent use. Multi-pack aftermarket keys are adequate for residential workloads but may show wear sooner.
Best overall: Femory 430-009 (Premium Choice) — combines broad compatibility and build quality, making it the safest single-key pick for most users.
Good alternatives:
- For John Deere owners: John Deere Replacement Key (Editors' Choice) for near-OEM fit.
- For budget shoppers and common Cub Cadet/MTD/Troy-Bilt models: Notonmek 2-Pack (Best Budget Pick).
- For households wanting spares: 6-Pack Universal Keys (Best Value).
Final Recommendation
If you want one dependable, broadly compatible key that performs like a higher-end aftermarket part, the Femory 430-009 is our top recommendation based on fit testing, material quality, and compatibility. If you own a John Deere tractor, pick the John Deere Replacement Key for the most trouble-free fit. For tight budgets or when you want a spare on-hand, the Notonmek 2-Pack or the 6-Pack Universal Keys offer great savings and acceptable performance for residential users.
These recommendations come from hands-on fits, cross-referenced part numbers, and aggregated consumer feedback. Match the key to your mower’s listed part numbers when in doubt — that’s the single best way to avoid fit problems. If you need help identifying your mower’s ignition part number, send the model/year and we’ll point you to the best option.