McGard Trailer Wheel Locks & Lug Nuts – 4-Pack, 1/2-20 Thread (371-74041)
Free returns on all eligible orders
You have 30 days to request a return. All sale items are final sale.
McGard Trailer Wheel Locks & Lug Nuts – 4-Pack, 1/2-20 Thread
Protect your trailer wheels from theft with this 4-piece set of McGard wheel locks. Engineered with a cone seat design and 1/2-20 thread pitch, these locks replace standard lug nuts on your trailer wheels and require a unique key socket to remove — making opportunistic wheel theft significantly harder. The triple-nickel chrome-plated steel finish is guaranteed for life not to rust, chip, or peel, making them a reliable long-term security solution for boat trailers and utility trailers alike.
Key Features
- Set of 4 wheel locks with cone seat design
- Thread: 1/2-20
- Triple-nickel, chrome-plated steel construction
- Lifetime guarantee against rust, chipping, and peeling
- Unique key socket required for removal — deters theft without special tools
Compatible Applications
- Trailers with 1/2-20 thread cone seat lug positions
- Boat trailers, utility trailers, and single- or tandem-axle trailer setups
- Use alongside Seachoice 1/2-20 Trailer Wheel Lug Nuts to complete a full wheel fastener set
- Pair with the 2-Pack Trailer Wheel Locks (371-74042) for additional axle coverage
Parts Desk Insights
Best used when securing a trailer that's stored in a public lot, marina, or unattended location. One lock per wheel is the standard approach — replace one lug nut per wheel with a lock from this set. For tandem-axle trailers needing coverage on all four wheels, combine this 4-pack with the 2-Pack Wheel Locks (371-74042). Always verify your trailer's thread pitch and seat type before ordering — cone seat is the most common on trailer applications, but check your existing lug nuts to confirm.
SKU: 371-74041 | Barcode: 083509740417
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 1-3 business days.
Special-order items: timeline confirmed after order.
Returns & warranty
Returns & Satisfaction Guarantee
We stand firmly behind the quality of every product we sell. Your confidence matters to us — and we back it with a straightforward 30-Day Satisfaction Guarantee.
If you are not fully satisfied, you may request a return within 30 days of delivery. All returns must receive pre-approval prior to being sent back. Unauthorized returns will not be accepted.
To qualify for a return:
Item must be in new, unused condition
Product must be in its original packaging
All parts, components, hardware, manuals, and accessories must be included
Packaging must be undamaged and suitable for resale
Important:
Electronics are strictly inspected. No returns on open-box electronics. Exceptions may apply only with prior written approval. Any electronic unit that has been installed, powered, activated, or altered may not be eligible for return.
We are serious about product integrity — and equally serious about taking care of our customers. If there is ever a product issue, contact us immediately so we can make it right.
For return authorization, please contact our support team before shipping anything back.