SKU: 97289997434

CURT 57040 - 7-Way Round Vehicle-Side to 4-Way Flat Trailer Wiring Adapter

Sale price$12.60 Regular price$14.00
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Ships within 48 hours · Estimated delivery Jul 31 - Aug 5

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Description

CURT 57040 - 7-Way Round Vehicle-Side to 4-Way Flat Trailer Wiring AdapterThere are several different types of connectors used to supply power from a tow vehicle's electrical system to a trailer's wiring system. Some trailers only need the bare essentials running lights, brake lights and turn signals while others require a connection for reverse lights, electric brakes and auxiliary power. With connectors ranging from simple to complex, it may be the case that the connection between your vehicle and your trailer is not a

There are several different types of connectors used to supply power from a tow vehicle's electrical system to a trailer's wiring system. Some trailers only need the bare essentials -- running lights, brake lights and turn signals -- while others require a connection for reverse lights, electric brakes and auxiliary power. With connectors ranging from simple to complex, it may be the case that the connection between your vehicle and your trailer is not a perfect match. For example, your truck may be equipped with a 6-way round socket, but your trailer may have a 4-way flat plug. For this very common problem, CURT offers a quick and simple solution in the form of an electrical adapter. An adapter is an electrical device that allows a connection to be made between a mismatched trailer plug and vehicle socket. It easily plugs in your vehicle's electrical socket and usually requires no additional wiring. CURT offers an array of adapters to accommodate most types of plugs and sockets, including 4-way flat, 4-way round, 5-way flat, 6-way round, 7-way RV blades and more. This electrical adapter is designed to adapt a 7-way round vehicle socket to fit a 4-way flat trailer plug. It is constructed from quality plastic and requires no splicing. All CURT wiring and electrical products come with a one-year limited warranty to give you the assurance you need to tow with confidence.

Additional Attributes:

  • GTIN: 612314777044
  • Box Height in Inches - XA: 2
  • Item Width - XA: 0.000
  • Item Length - XA: 0.000
  • Tariff 301 - XA: No
  • Rate Class - XA: 70.0
  • Finish - XA: N/A
  • Product Weight - XA: 0.000
  • Warranty: One-Year Limited Warranty
  • Shipping Weight - XA: 0.220
  • Item Height - XA: 0.000
  • Box Width in Inches - XA: 4
  • Retail Length - XA: 4.000
  • Retail Height - XA: 2.000
  • Parcel Allowed - XA: Yes
  • Item Class - XA: OBS
  • Class ID: 0
  • Box Length in Inches - XA: 7
  • Retail Width - XA: 3.000

Packaging:

  • Quantity of Each: 1
  • Package UOM: EA
  • Dimension: 4.000 x 3.000 x 2.000 inches
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 97289997434

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4.6 ★★★★★
Based on 26 reviews
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Verified Purchase
riceliteratureandbooks
West Palm Beach, US
★★★★★ 5
Beautiful Wallet
Color: With NO Logo - Smooth Nappa Black
Well constructed and beautiful wallet. The black Nappa leather I ordered is soft and smooth to the touch and you can tell by the look, feel, and smell that it is high quality. I love that you can order this with both a logo and no logo for a clean look. The design on this is well thought out. I'd definitely recommend this wallet to anyone. It is an amazing value and far superior to any other $30 wallet I've ever seen.
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Reviewed in the United States on March 19, 2026
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Verified Purchase
Demosthenes
Natrona Heights, US
★★★★★ 4
Almost perfect!
Color: With Coin Pocket - Forest Brown
I purchased this wallet primarily for its generous number of conveniently located slots and its coin pocket. If you can't fit everything you want to EDC in this wallet, you need to think about getting a sling bag! Having returned the same model in Grizzily Brown due to a stitching defect and ordered this one in Forest Brown, I can see it is a richer, lighter shade and the finish seems smoother and more refined. Some of my cards were tight in previous wallet slots, but everything fits great in this one. Why the one star off? First, this wallet is about a quarter inch too large in all dimensions, especially thickness. While it doesn't protrude out the top of my back pocket, it is a challenge to close the button on some pants and it is also snug side-to-side, so removal involves some wiggling until pockets stretch and the wallet breaks in. The leather used in its construction is smooth but stiff at first, given that it is about twice as thick as most American or European wallet leather I've owned: think bullhide. The smell is also a little off, definitely natural cowhide but processed with whatever is used to tan leather in India rather than in the United States. Finally, this looks like something that belongs in a pair of jeans or casual pants, NOT pulled out of a suit at a Michelin star restaurant. The stitching, evenness of dye and lines are far from perfect, but what it lacks in looks it more than makes up for in every day function, character, and anticipated durability.
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Reviewed in the United States on January 13, 2026
K
Verified Purchase
KendallTom
Port Orchard, US
★★★★★ 5
The Best Wallet
Color: Boulder Black - Napa Smooth Black
This is the second wallet I have purchased from Bull Guard. The first one is identical and I have used it for approximately one year. The first wallet has held up perfectly. I just decided to buy a second one because I am so happy with the first one and I decided to break up my cards into frequently used in the second, new wallet and less frequently used in the first and older wallet. The capacity of the wallet is excellent. It easily holds all my credit cards, drivers license, bills, insurance ID cards, and my global entry card. The material, workmanship, durability, and quality is also excellent. The wallet is all leather and breaks in perfectly. The size is also perfect fitting perfectly in my rear pocket. For the price, this is the best man's wallet I have ever had and I highly recommend it.
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Reviewed in the United States on November 22, 2025
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Verified Purchase
Reviews By Mike
Alexandria, US
★★★★★ 5
Solid Wallet
Color: Wild Buffalo Grey
I recently purchased the ULL GUARD Buffalo Leather Wallet, and I’m genuinely impressed with its quality and craftsmanship. The buffalo leather feels durable and premium—this is a wallet that looks like it’ll stand the test of time. What I love about it: - Thoughtful Billfold Design: The bill compartment includes a separator, which is perfect for organizing cash and checks separately. It’s a small detail that makes a big difference. - Plenty of Storage: There are numerous credit card slots, making it easy to keep all your cards neatly arranged and accessible. - Clear ID Pocket: The transparent ID slot is a convenient touch, especially for quick access to your driver’s license or work badge. Overall, this wallet combines functionality with rugged style. If you're looking for something that’s both practical and built to last, the ULL GUARD Buffalo Leather Wallet is a solid choice.
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Reviewed in the United States on November 7, 2025
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Verified Purchase
Amazon Customer
Birmingham, US
★★★★★ 5
A Quality Wallet
Color: Boulder Black - Napa Smooth Black
So far so good. The wallet has a great feel and is of high quality. It looks great and has plenty of credit card slots and I love the bill holder, with a divider. It is wider than I expected, but it stays thinner than the last minimalist wallet I had so the trade off is worth it to me. I would buy it again.
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Reviewed in the United States on April 28, 2026

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