1. Trailer Leveling & Towing Parts Deals
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  3. CURT 23521

CURT Padlock Coupler Lock 612314235216

23521 Curt Padlock Coupler Lock

( Brand: Curt ), ( Manufacturer Part Number: 23521 ), ( Product Type: Trailer Hitches ), ( UPC: 612314235216 ), ( California Prop 65 Warning: This Product Can Expose You To Chemicals Including Lead, Which Is Known To The State Of California To Cause Cancer Or Birth Defects Or Other Reproductive Harm. ), ( Fitment Type: Semi-universal ), ( Product Subtype: Trailer Couplers ), ( Components: Coupler Locks ), ( Type: Accessories )

Review CURT Padlock Coupler Lock

The Curt 23521 Padlock Coupler Lock is a versatile and secure solution for securing various types of trailer hitches and towing accessories. This padlock coupler is engineered to provide maximum security for your trailer or RV, giving you peace of mind during transportation.

The padlock coupler features a heavy-duty, forged all-steel construction, ensuring durability and resistance to tampering. Its hardened steel shackle is protected by a weather-resistant vinyl cover, shielding it from the elements and extending its lifespan. The locking mechanism is a high-security, keyed padlock, which comes with two keys for added convenience.

The Curt 23521 Padlock Coupler Lock is designed to fit a wide range of trailer hitch sizes, with a universal fitment of 2 inches and a maximum size of 2-1/2 inches. Its adjustable design allows for quick and easy installation, making it a hassle-free solution for securing your trailer hitch.

The padlock coupler also includes a reflective strip, enhancing your trailer's visibility during low-light conditions, ensuring your safety while on the road. Additionally, the lock's compact size makes it easy to store when not in use, making it a practical and convenient addition to your towing setup.

In summary, the Curt 23521 Padlock Coupler Lock is a reliable and durable solution for securing your trailer hitch. Its heavy-duty construction, adjustable design, and high-security locking mechanism make it an excellent investment for anyone who uses a trailer or RV for transportation. With its weather-resistant vinyl cover, reflective strip, and convenient size, this padlock coupler is a practical and versatile accessory that will provide you with peace of mind during your travels.

The Curt 23521 Padlock Coupler Lock is a versatile and secure solution for securing multiple trailers or cargo with just one padlock. Here are some pros and cons that can help in making an informed decision about purchasing this product:

Pros:

1. Keyed-alike design: The Curt 23521 Padlock Coupler Lock comes in a set of two padlocks that can be keyed alike, making it convenient to secure multiple trailers or cargo with just one key.

2. Heavy-duty construction: The padlock is made of hardened steel, making it resistant to tampering and theft. It also features a hardened boron alloy shackle, which is more resistant to cutting than standard shackles.

3. Adjustable design: The padlock can be adjusted to fit different trailer hitch sizes ranging from 1-7/8 inches to 2-1/2 inches.

4. Weather-resistant: The padlock is coated with a durable powder-coated finish that protects it from the elements, ensuring long-lasting performance.

5. Easy to use: The padlock is easy to use and can be secured in just a few steps.

Cons:

1. Expensive: The Curt 23521 Padlock Coupler Lock is more expensive than a standard padlock due to its versatility and heavy-duty construction.

2. Size limitations: While the padlock can be adjusted to fit different hitch sizes, it may not fit all trailer hitches, especially those that are significantly larger or smaller than the specified range.

3. Requires additional hardware: The padlock requires additional hardware, such as a hitch pin or a locking pin, to secure the trailer to the hitch ball.

Conclusion:

The Curt 23521 Padlock Coupler Lock is an excellent investment for those who need to secure multiple trailers or cargo with just one padlock. Its heavy-duty construction, adjustable design, and keyed-alike feature make it a reliable and convenient option. However, it may be more expensive than a standard padlock and may not fit all trailer hitches. Overall, if you need a versatile and secure solution for securing multiple trailers or cargo, the Curt 23521 Padlock Coupler Lock is a worthwhile investment.

Recommendation:

If you are in the market for a padlock to secure multiple trailers or cargo, I would recommend considering the Curt 23521 Padlock Coupler Lock. Its heavy-duty construction, adjustable design, and keyed-alike feature make it a reliable and convenient option for securing multiple trailers or cargo with just one padlock. However, be sure to measure your trailer hitch size carefully to ensure a proper fit, and be prepared for the additional cost compared to a standard padlock.

part # 23521 prices

  • $15.66-$29.49

specifications rvlevelcamp:

  • brand: Curt
  • manufacturer part number: 23521
  • product type: Trailer Hitches
  • upc: 612314235216
  • california prop 65 warning: This Product Can Expose You To Chemicals Including Lead, Which Is Known To The State Of California To Cause Cancer Or Birth Defects Or Other Reproductive Harm.
  • fitment type: Semi-universal
  • product subtype: Trailer Couplers
  • components: Coupler Locks
  • type: Accessories

returns rvlevelcamp:

  • time: 30 Days
  • policy: Returns Accepted
  • paid by: Seller

payments rvlevelcamp:

  • wallet: Apple-pay
  • credit card: Diners-club
  • other

offer rvlevelcamp:

  • started: February 20, 2026
  • availability: In Stock
  • options: Ship-to-home
  • sold: 0
  • quantity: 5

shipping rvlevelcamp:

  • class: Standard
  • type: Calculated
  • cost: $18.21
  • carrier: FedEx
  • service: FedEx Ground / FedEx Home Delivery
  • transit: 5-12 Days

seller rvlevelcamp:

  • # reviews: 8487
  • rating: 99.7%

general rvlevelcamp:

  • condition: New
  • RV, Trailer Camper Parts Accessories > Trailer Leveling Towing > Other Trailer Leveling Towing Parts
product type: trailer hitches, california prop 65 warning: this product can expose you to chemicals including lead, which is known to the state of california to cause cancer or birth defects or other reproductive harm., fitment type: semi-universal, product subtype: trailer couplers, components: coupler locks, type: accessories,
category: auto parts > rv, trailer camper parts accessories > trailer leveling towing > trailer leveling towing parts, sku: 5464401305136793,

Curt 23521 Is Similar To:

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5 offers $15.66–$29.49 USD
  • Offer #1: $29.12 price + free delivery = $29.12* total. Protect your boat, your camper and even your utility trailer the right way with a CURT coupler lock. PART NUMBER.FREE SHIPPING
  • Offer #2: $15.66 price + $19.00 delivery = $34.66* total. While a CURT hitch pin does offer sufficient strength for keeping your ball mount firmly attached, a CURT hitch lock goes one step further. Universal Padlock Coupler Lock by CURT.+$19.00 shipping
  • Offer #3: $29.49 price + free delivery = $29.49* total. All CURT coupler locks are made to fit latch type couplers. Sometimes a safety pin and coupler latch are just not enough to keep your toys safe.FREE SHIPPING
  • Offer #4: $54.19 price + free delivery = $54.19* total. coupler span; Coupler lock; Includes one set of keys. Curt Hitch Lock --CURT HITCH LOCKS.FREE SHIPPING
  • Offer #5: $38.49 price + free delivery = $38.49* total.FREE SHIPPING