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AP MER425H18 18" High Capacity RV Propane Pigtail Hose

Manufacturer

AP

<h3>About AP Products</h3><p><strong>AP Products</strong> has been a cornerstone of the recreational vehicle industry for over three decades. Founded in 1994 by Tom Manning Sr. — with roots going back to 1992 — the company began with a straightforward goal: offering a complementary line of packaged screws to support an existing supplier relationship. What started as a niche hardware offering has since grown into one of the most comprehensive RV replacement parts portfolios in North America.</p><p>Headquartered in Coldwater, Michigan, AP Products serves both the OEM and aftermarket segments of the RV world. Their catalog spans everything from adhesives and sealants to electrical components, braking systems, doors, locks, seals, and slide-out parts — making them a true one-stop source for RV dealers and enthusiasts alike. The company operates a group of 13 brands, focused on bringing high-quality, often American-made products to market and filling gaps that other suppliers have overlooked.</p><h3>A Broad Product Range Built Around RV Life</h3><p>One of AP Products' most recognized product segments is <a href="/2843-ap-body-trim-molding-46915">body trim molding</a>. Whether you&apos;re restoring a sun-faded travel trailer or refreshing a Class A motorhome, AP Products offers aluminum insert trim molding in a range of finishes — including Polar White, Colonial White, Black, and Mill Finish — designed to fit securely and deliver a clean, factory-like appearance. These trim solutions are made in the USA and backed by a limited warranty.</p><p>Lighting is another area where AP Products shines. Through their StarLights sub-brand and their broader electrical lineup, AP Products offers a wide array of <a href="/2843-ap-driving-light-bulb-16367">driving light bulbs</a> and RV-specific lighting solutions. From LED replacement bulbs engineered to fit standard RV fixtures to specialized omnidirectional tower bulbs, their lighting products are designed to deliver reliable performance and energy efficiency for life on the road.</p><p>Beyond trim and lighting, AP Products&apos; electrical category is expansive — covering adapters, circuit breakers, converters, power centers, energy management systems, awning accessories, and more. Their hardware line covers both exterior and interior needs, from compartment hardware and screw covers to cabinet hardware sized to fit travel trailers, fifth wheels, Class A and Class C motorhomes, and toy haulers.</p><h3>Trusted by RV Dealers and Owners Nationwide</h3><p>AP Products has built its reputation not just on product breadth, but on a genuine commitment to supporting the dealer network. The company has managed dozens of national retail and OEM accounts, and their parts are stocked widely to ensure availability when and where RV owners need them most. Quality is monitored continuously throughout production, reflecting a brand philosophy centered on reliability over the long haul.</p><p>Whether you&apos;re a seasoned full-timer, a weekend camper, or an RV service technician, AP Products delivers the parts and confidence to keep any rig road-ready.</p>

Part Number

MER425H18
07/13/2036 7:01 AM
Sale Price

$30.16

In Stock (10+)

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Usually delivered within 2 days

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No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The AP MER425H18 is an 18-inch high capacity propane pigtail hose designed specifically for RV, trailer, and motorhome applications. This professional-grade propane hose connects your LP gas cylinder to the propane regulator without requiring a wrench, featuring a convenient hand-tightened Type I ACME connection.

Key Features:

  • 400,000 BTU capacity - specifically designed for high-demand applications including motorhomes, trailers, and on-demand hot water heaters
  • 1/4 inch inside diameter high flow design for maximum propane delivery
  • Female QCC Type I (ACME) connection to 1/4 inch male inverted flare
  • Integrated thermal protection - heat-sensitive fitting closes cylinder valve between 240°F and 300°F in case of fire
  • Excess flow protection - built-in flow-limiting device shuts down flow to maximum 10 SCFH if excessive gas flow is detected
  • 18 inch length provides flexible positioning between cylinder and regulator
  • RVIA and NFPA 1192 compliant for RV applications
  • UL/CGA approved for safety and reliability

Marshall Excelsior MER425H series pigtails are required equipment for RV propane systems and meet the highest industry standards. The easy-to-tighten nylon nut swivels on the connector fitting for quick, tool-free installation. This high flow pigtail is engineered with both excess flow and thermal link safety features to protect against propane leaks and fire hazards.

Good inventory, good prices

Great!

great

Fast and easy

good so far

Easy to find my product and it came fast thanks for your service

quick and easy

Great prices and fast shipping!!!

Been good although I never got a response about the wrong gaskets in my last order.

Great shopping experience.

Autoplicity created a great shopping experience. It was very easy to find the parts I needed for the vehicle I needed. I will definitely use Autoplicity again!

Good so far

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