1552101700 Takeuchi Locking Fuel Cap - 2-Tab Bayonet - TL8 TL10 TL12 TL6R - With Keys - Replaces 15521-00500

1552101700 Locking Fuel Cap for Takeuchi TL8 / TL10 / TL12 Track Loaders

Your Takeuchi's fuel cap is missing, broken, or the lock cylinder is jammed with mud. On a construction site, an unlocked fuel tank is an invitation for theft, contamination, and water intrusion. Diesel contaminated with water or dirt will destroy injectors, score fuel pump components, and create expensive downtime. The Takeuchi dealer wants $97 to $109 for the OEM green replacement cap. That's over a hundred dollars for a plastic fuel cap.

We sell the direct replacement for $49.00 — saving you over $50 vs the dealer. This cap features the same 2-tab bayonet locking mechanism, the same flip-up key cover that keeps mud and ice out of the lock cylinder, and the same scalloped grip edge for easy opening with heavy work gloves. Includes 2 keys. Replaces Takeuchi part numbers 1552101700 and 15521-00500.

Function Over Form — The $50 Savings

The only difference between this cap and the $100+ dealer cap is the color. The dealer cap is Takeuchi Green. This cap is Black. The locking mechanism, the bayonet tabs, the flip-up key cover, the scalloped grip, the seal — all identical. It fits and locks exactly the same way. If you want your fuel cap to match the Takeuchi Green color scheme, the dealer will happily charge you $100 for a paint job on plastic. If you want a fuel cap that locks your fuel tank, this is it.

Features

• 2-Tab Bayonet Locking Mechanism: Same quarter-turn, 2-metal-tab design as the OEM cap. Drops into the filler neck and locks securely with a quarter turn.
• Flip-Up Key Cover: Hinged cover protects the lock cylinder from mud, water, ice, and debris — just like the original. Critical for machines working in wet, muddy, or freezing conditions.
• Scalloped Grip Edge: Oversized grip pattern allows easy opening and closing with heavy work gloves — no fumbling with a slippery cap on a cold morning.
• Locking Cylinder with 2 Keys: Keyed lock prevents unauthorized fueling, fuel theft, and contamination. Two keys included.
• Fuel Tank Seal: Integrated gasket seals against the filler neck to prevent water, dust, and debris from entering the fuel tank.

⚠️ Verify Your Cap Style: Bayonet (2-Tab) vs Threaded

Takeuchi track loaders use two different fuel cap styles depending on model and production year:

• Bayonet Style (2-Tab) — This Listing: The cap has two metal tabs on the bottom that engage slots in the filler neck. You insert the cap and give it a quarter turn to lock. This is the style used on the TL8, TL10V2, TL12R2, TL12V2, TL6R, and TL8R2.
• Threaded Style — NOT This Listing: Some Takeuchi models use a cap that screws onto threaded filler neck — similar to an automotive gas cap. If your filler neck has threads, this is the wrong cap.

How to check: Look at the bottom of your existing fuel cap. If you see two metal tabs sticking out, this is the correct bayonet-style cap. If the bottom has threads (like a screw cap), you need a different cap.

Specifications

• Takeuchi OEM Part Number: 1552101700 (current) / 15521-00500 (older number)
• Type: Locking Fuel Cap
• Style: 2-Tab Bayonet (Quarter Turn) — NOT Threaded
• Key Cover: Flip-Up Hinged
• Grip: Scalloped Edge
• Keys: 2 Included
• Color: Black
• Dimensions: Approximately 3" x 3" x 2"
• Condition: Brand New

Compatible Equipment

The 1552101700 locking fuel cap fits the following Takeuchi compact track loaders:

• Takeuchi TL6R
• Takeuchi TL8
• Takeuchi TL8R2
• Takeuchi TL10V2
• Takeuchi TL12R2
• Takeuchi TL12V2

⚠️ Verify your cap style (bayonet 2-tab vs threaded) before ordering. Contact us with your machine model and serial number if you're unsure which style your machine uses.

Installation

• Remove the old fuel cap (or inspect the empty filler neck)
• Verify the filler neck has two bayonet slots — not threads
• Insert the new cap into the filler neck, aligning the two metal tabs with the slots
• Give the cap a quarter turn clockwise — it should click into the locked position
• Test the lock: insert the key, turn to unlock, verify the cap rotates freely to open; turn key to lock, verify the cap is secured
• Test the flip-up key cover — it should snap open and closed easily
• Verify the seal sits flush against the filler neck with no gaps

Why You Need a Locking Fuel Cap

• Fuel Theft Prevention: Diesel is expensive. An unlocked fuel tank on a job site is easy pickings — especially overnight or on weekends when sites are unattended.
• Contamination Prevention: Water, dirt, sand, and debris entering the fuel tank will damage injectors, fuel pumps, and fuel rails. A single contamination event can cost thousands in repairs.
• Vandalism Protection: Sugar, water, or other contaminants deliberately added to a fuel tank can destroy an engine. A locked cap is the first line of defense.
• Insurance: Many insurance policies require secured fuel tanks. An unlocked fuel cap may void your claim if fuel-related damage or theft occurs.

Frequently Asked Questions

Why is this cap black instead of green?
The Takeuchi dealer sells the green version for $97–$109 as a dealer exclusive. This replacement cap is identical in function — same 2-tab bayonet, same flip-up cover, same scalloped grip, same lock — but it is made in black plastic instead of Takeuchi green. The $50+ savings is because you're not paying for the color. It fits, locks, and seals exactly the same.

Will both keys work?
Yes. Both keys are identical — they are duplicates for the same lock cylinder. Keep one on your keyring and one as a spare. We recommend storing the spare key in the machine's toolbox or with your fleet records.

Is the seal/gasket included?
Yes. The cap comes with an integrated seal that sits against the filler neck to prevent water and debris from entering the tank.

Can I order this cap keyed alike for a fleet?
This cap comes with its own unique key set. For fleet keying (all machines using the same fuel cap key), contact us — we may be able to source keyed-alike caps in quantity.