Blue Ox BX88403 Trailer Hitch Lock Kit – 5/8” Receiver Lock & Adjustable Coupler Lock (Keyed Alike)

The Blue Ox BX88403 Trailer Hitch Lock Kit provides secure, reliable theft protection for your trailer connection point. Designed for towing safety and peace of mind, this dual-lock system includes both a 5/8” receiver lock and an adjustable pin-style coupler lock, making it a versatile solution for a wide range of towing setups.

Manufactured by Blue Ox, a trusted name in towing and RV safety equipment, this lock kit is built for durability, ease of use, and long-term protection against theft and tampering.

Ideal for RV owners, trailer users, and frequent towers, this kit ensures your hitch components remain securely locked whether parked at home, a campsite, or a storage facility.

Perfect For:

• RV trailers and travel trailers
• Utility trailers
• Boat trailers
• Equipment trailers
• Long-term storage security

Features:

• Includes 5/8” receiver lock (fits spans up to 3-1/2”)
• Adjustable 7/8” pin-style coupler lock
• Compatible with 2-1/2” and 3-1/2” coupler spans
• Both locks keyed alike for convenience
• Heavy-duty construction for theft resistance
• Designed for outdoor durability

Benefits:

• Protects trailer from unauthorized towing
• Reduces risk of hitch theft at campsites or storage yards
• Easy installation and removal
• One-key system simplifies operation

Included:

• 1 x 5/8” receiver lock
• 1 x adjustable coupler lock
• 4 keyed-alike keys