Nimiah Replace 751-3111 Fuel Cap Fits Troy-Bilt Toro Cub Cadet MTD Mower & Lawn Tractor 1015188 751-3111 7513111 1015188 751-0603A 539914363 AM104032 AM107344 01538400 Review

Overview

The Nimiah Replace 751-3111 Fuel Cap is a budget-friendly replacement part designed for a wide range of Troy-Bilt, Toro, Cub Cadet, and MTD lawn tractors and mowers. Priced at just $9.99, it solves the common problem of a lost, cracked, or failing gas cap that can lead to fuel leaks, evaporation, or engine performance issues. This cap is best for owners of these specific brands who need a quick, reliable fix without paying OEM prices.

Who Should Buy This

• Homeowners with older Troy-Bilt, Toro, Cub Cadet, or MTD mowers/tractors – If your original cap is cracked, missing, or no longer sealing properly, this is a direct replacement that fits multiple models, including those using OEM part numbers 751-3111, 751-0603A, and 1015188.
• DIY lawn equipment mechanics – If you maintain your own mower and want a cost-effective fix for fuel system issues, this cap is a no-brainer at under $10. It’s especially useful if you have multiple compatible machines.
• Buyers who prioritize sealing over aesthetics – This cap gets the job done for fuel containment, but it’s not a cosmetic upgrade. If you just want a functional seal to prevent gas spills and evaporation, this is your pick.
• Owners of budget-conscious households – At roughly half the price of many OEM caps, it’s a smart choice for those who want to avoid a trip to the dealer and save money on a simple part.

Key Features Breakdown

• Compatibility with multiple brands and part numbers – This cap replaces a long list of OEM parts (751-3111, 1015188, 751-0603A, 539914363, and more). That means it fits a huge range of Troy-Bilt, Toro, Cub Cadet, and MTD models from the 1990s to present. Always double-check your mower’s part number, but the list is extensive.
• Standard threaded design – It uses a common twist-on, twist-off mechanism that matches most fuel tanks on these brands. No special tools or adapters needed—just screw it on hand-tight.
• Vented or non-vented? – Based on user reports, this cap is typically vented (it allows air into the tank to prevent vacuum lock). This is critical for older mowers with gravity-fed or pulse-style fuel pumps, as a non-vented cap can stall the engine. If your mower requires a non-vented cap, verify before buying.
• Material – Made of plastic with a rubber or silicone gasket inside. The gasket is key for creating a seal that prevents fuel evaporation and leaks. Some users note the gasket can be a bit stiff initially but softens with use.
• Price point – At $9.99, it’s significantly cheaper than many OEM caps (which can run $15–$25). For a simple part, this is a solid value if it fits and seals.

Pros

1. Excellent price – Under $10 for a replacement cap that solves fuel leaks and evaporation is a steal compared to OEM options.
2. Broad compatibility – Fits dozens of models across four major brands. If you have a Troy-Bilt, Toro, Cub Cadet, or MTD with a standard threaded neck, odds are good this works.
3. Easy installation – No tools, no instructions needed. Just unscrew the old cap and twist this one on. It takes 10 seconds.
4. Effective seal – When properly tightened, the cap stops gas fumes and liquid leaks. Many users report it fixed their fuel smell and gas-stained garage floors.
5. Vented design works for most – For older mowers that need vented caps, this prevents engine stalling due to vacuum lock. It’s a relief for owners of pulse-pump machines.
6. Lightweight and durable – The plastic construction holds up well to UV exposure and occasional drops, based on user feedback over months of use.

Cons

1. Fit can be tight on some tanks – A few buyers report the cap is slightly smaller or larger than the original, requiring extra force to thread or leaving a gap. This is inconsistent across models, so it’s a gamble.
2. Gasket quality varies – Some users find the rubber gasket too thin or stiff, leading to a less-than-perfect seal after a few months. It may need to be replaced or adjusted.
3. Not a perfect OEM match – While it fits many models, the cap’s shape and color (usually black) may differ slightly from your original. It’s functional, not a cosmetic clone.
4. Vented design may not suit all – If your mower specifically requires a non-vented cap (e.g., certain newer models with pressurized fuel systems), this cap could cause fuel spillage or performance issues. Always verify your mower’s needs.

Bottom Line

The Nimiah Replace 751-3111 Fuel Cap is a solid, budget-friendly solution for anyone with a Troy-Bilt, Toro, Cub Cadet, or MTD mower or tractor that needs a new gas cap. At $9.99, it’s hard to beat for stopping fuel leaks, eliminating gas fumes, and preventing engine stalling from vacuum lock. While it’s not a perfect OEM replica—fit and gasket quality can be inconsistent—it works well for the vast majority of compatible models. I recommend it for DIYers and homeowners who want a quick, cheap fix without hunting down a dealer part. Just double-check your mower’s part number and whether you need a vented cap before buying.

Frequently Asked Questions

Q: Will this cap fit my 2008 Troy-Bilt Bronco lawn tractor?
A: Likely yes, if your tractor uses part numbers 751-3111, 1015188, or 751-0603A. The Bronco series from the mid-2000s often uses these caps. Check your owner’s manual or the old cap for the part number to confirm.

Q: Does this cap have a vent? I’m worried about stalling.
A: Based on user reports, this cap is vented (it allows air into the tank). Most older mowers with gravity-fed or pulse fuel pumps need a vented cap to avoid vacuum lock. If your mower’s original cap was vented, this should work. If it was non-vented, look for a different cap.

Q: The cap seems loose after installation. Is it defective?
A: Not necessarily. Some fuel tanks have worn threads or slightly different neck sizes. Try tightening it hand-tight (don’t overtighten). If it still feels loose, the gasket may need to seat after a few days. If it leaks, you may need a cap with a thicker gasket or a different model.