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Marshall Excelsior Co. MER421-144 Propane Hose 12ft 1/4 Inch ID Thermoplastic

Manufacturer

Marshall Excelsior Co.

<p>Marshall Excelsior Co. has built a solid reputation as a trusted manufacturer of precision-engineered components and control systems. With expertise spanning multiple product categories, Marshall Excelsior Co. delivers reliable solutions for automotive, HVAC, and fluid control applications. Their commitment to quality manufacturing and rigorous testing ensures that each component meets demanding performance standards in real-world conditions.</p><h3>HVAC and Climate Control Solutions</h3><p>One of Marshall Excelsior Co.'s core specialties lies in <a href="/7451-marshall-excelsior-co-hvac-heater-control-valve-6860">HVAC heater control valves</a>, which play a critical role in regulating coolant flow to maintain optimal cabin temperature. These precision valves must withstand constant thermal cycling and pressure changes while providing smooth, responsive climate control. Marshall Excelsior Co.'s engineering approach focuses on durability and consistent operation, making their heater control valves a dependable choice for maintaining comfort in all weather conditions.</p><h3>Fuel System Components</h3><p>Clean fuel delivery is essential for engine performance and longevity, which is why Marshall Excelsior Co. manufactures high-quality <a href="/7451-marshall-excelsior-co-gasoline-filters-200481">gasoline filters</a> designed to trap contaminants before they reach sensitive fuel injection systems. These filters help protect engine components from premature wear while maintaining optimal fuel flow rates. Additionally, the brand produces <a href="/7451-marshall-excelsior-co-automatic-transmission-control-solenoid-7752">automatic transmission control solenoids</a> that regulate hydraulic pressure and fluid flow within modern transmission systems, ensuring smooth gear changes and efficient power transfer.</p><h3>Brake and Air Filtration Products</h3><p>Marshall Excelsior Co.'s product range extends to critical safety components like <a href="/7451-marshall-excelsior-co-disc-brake-rotor-1896">disc brake rotors</a>, which convert kinetic energy into heat during braking events. Quality rotors must resist warping under extreme temperatures while providing consistent friction characteristics. The company also offers <a href="/7451-marshall-excelsior-co-air-filter-6192">air filters</a> that protect engines by capturing dust, pollen, and debris before contaminated air enters the combustion chamber. Proper air filtration is fundamental to maintaining engine efficiency and preventing accelerated wear on pistons, cylinders, and valves.</p><h3>Engineering Excellence</h3><p>What sets Marshall Excelsior Co. apart is their focus on manufacturing components that perform reliably across diverse operating environments. Whether dealing with high-pressure fuel systems, temperature-sensitive HVAC applications, or safety-critical braking components, the brand applies consistent quality standards and material specifications to ensure long service life and dependable performance.</p>

Part Number

MER421-144
06/01/2036 1:43 AM
Sale Price

$45.16

In Stock (10+)

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Usually delivered within 2 days

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No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The Marshall Excelsior MER421-144 is a flexible thermoplastic propane hose designed for LP gas applications in RVs, motorhomes, and other propane systems. This 144-inch (12-foot) hose features 1/4-inch internal diameter construction and provides reliable, flexible gas line connections between cylinders and appliances.

Key Features:

  • 1 inch-20 female swivel fitting on one end, 1 inch-20 male swivel fitting on the other
  • 144-inch (12-foot) approximate overall length for extended reach
  • 1/4-inch internal diameter for adequate propane flow
  • Rated for up to 350 PSI working pressure
  • 400-pound pull test rating for secure connections
  • Fully crimped brass ferrules for leak-free performance
  • UL and CGA approved for safety and compliance
  • Flexible thermoplastic construction resists kinking and weathering

This hose comes complete with both end fittings factory-installed and is ready for immediate use. The thermoplastic material provides excellent durability while remaining flexible in various temperature conditions, making it ideal for RV and outdoor propane applications.

Important Safety Note: Excess flow valves may not activate if downstream breaks or leaks do not meet or exceed the valve's closing flow rate, or if the installed valve exceeds the system's flow capacity. Always ensure proper installation and regular inspection of propane system components.

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Very quick and easy. Thank you

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so far, so good

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The order process is simple and efficient. Shipping was quick. Price was excellent.

Simple and easy to order

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