Lawn Mower Fuel Tank Cap – AL-KO & LONCIN LC Series 1–2 Pack

Lawn Mower Fuel Tank Cap – AL-KO, LONCIN LC Series Replacement

Keep your lawn mower running smoothly with this durable replacement fuel tank cap. Designed as a direct fit for a wide range of popular mower models including AL-KO, PRO 140, QSS, OHV, and LONCIN LC Series, this cap delivers a secure, leak-free seal every time. Available in a convenient 1-pack or money-saving 2-pack so you always have a spare on hand.

Made in Mainland China.

Key Features

• Wide Compatibility: Direct replacement for AL-KO (part #411919) and LONCIN (part #170870094-0001) fuel caps, as well as PRO 140, QSS, and OHV mower models.
• Secure, Leak-Proof Seal: Engineered for a tight fit that prevents fuel leaks and shields the engine from contaminants — protecting your mower's performance.
• Durable Plastic Construction: Made from robust, weather-resistant plastic built to handle the demands of regular outdoor use season after season.
• Tool-Free Installation: Simply swap out your old or damaged cap — no tools required. Quick and effortless, even for first-timers.
• Available in 1 or 2 Pack: Pick up a single replacement or grab two for long-term peace of mind.

Specifications

• Product: Fuel Tank Cap / Cover
• Material: Plastic
• Color: Black
• Dimensions: 5.5 × 5.5 × 2.2 cm
• Pack Options: 1 pc or 2 pcs
• Compatible Models: AL-KO, PRO 140, QSS, OHV, LONCIN LC Series
• Replaces Part Numbers: AL-KO 411919 | LONCIN 170870094-0001 | MS139-42

Package Contents

• 1× or 2× Fuel Tank Cap (based on your selected option)

Related Products

Looking for more outdoor and garden tools? Browse our selection:

• 1-Inch Impact Rocker Sprinkler – Adjustable Rotating Irrigation
• 1-Inch Threaded Brass Ball Valve – Water, Gas & Oil Flow Control
• 1.4W Solar Bird Bath Fountain Pump – Pond, Garden & Fish Tank

For general lawn mower safety and maintenance guidance, visit the U.S. Consumer Product Safety Commission (CPSC).

Note: Monitor brightness and lighting conditions may cause slight color variation from images shown. Please allow a small tolerance for manual measurements.

Learn more: Rural King

Frequently Asked Questions

Q: Which lawn mower models is this fuel tank cap compatible with?

A: This fuel tank cap is designed to fit AL-KO (part #411919), LONCIN LC Series (part #170870094-0001), PRO 140, QSS, and OHV series lawn mowers. It replaces the MS139-42 cap reference. Always double-check your mower's part number before ordering to confirm fitment.

Q: Do I need any tools to install this fuel tank cap?

A: No tools are needed. The cap is engineered for a simple, tool-free installation — just remove the old cap and press or twist the new one into place for a secure, leak-proof fit.

Q: Why should I buy the 2-pack instead of a single cap?

A: The 2-pack offers great value and ensures you always have a spare ready. Fuel tank caps can wear or go missing during seasonal maintenance, so having a backup means less downtime and more time mowing.

Q: Will this cap prevent fuel leaks effectively?

A: Yes. The cap is engineered to create a tight, secure seal on compatible fuel tanks, preventing fuel leaks and keeping dirt and debris out of the tank — helping to maintain your mower's engine performance over time.