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Hose - 4300 PSI - Kobrajet Blue With Quick Connects- Non Marking

Sale price $140.08

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Due to the size of this item it will be charged $19.99 oversized shipping.

The MTM Hydro KobraJet Smooth Blue hose is a 3/8″, 4000 PSI, 310 °F‑rated pressure washer hose built for commercial truck and fleet washing. Its smooth, non‑marking blue jacket and thicker inner wall make it a durable, vehicle‑safe upgrade over generic hoses.


Why You Need The MTM Hydro KobraJet Smooth Blue

  • Run longer distances in your wash bay or mobile setup without losing reliable flow.
  • 3/8″ ID handles high‑GPM pressure washers commonly used for fleet and truck washing.
  • Smooth, non‑marking exterior protects painted trucks, trailers, and facility floors from scuffs.
  • Thicker inner wall reduces the risk of gashes, ruptures, and premature failure.
  • 4000 PSI rating and 310 °F heat tolerance cover hot and cold commercial washing.
  • Stainless steel quick couplers and “Bite the Wire” hose‑end tech improve grip and leak resistance.
  • Made in the USA with corrosion‑resistant fittings for long life in chemical environments.

What Makes The MTM Hydro KobraJet Smooth Blue Different?


This hose is engineered for professional detailers and fleet washers who need a smooth, non‑marking line that can handle chemicals, heat, and daily abuse. Compared to standard rubber whip hoses, the KobraJet’s smooth jacket and reinforced construction reduce surface marring and improve durability when dragging across docks, concrete, and vehicle panels.


Recommended use routine


Use this hose as part of your regular fleet or truck wash workflow:
  1. Inspect before use: Check couplers, hose ends, and the jacket for cuts, bulges, or leaks.
  2. Connect to pressure washer: Attach the pump‑end quick coupler to your pressure washer’s 3/8″ outlet or adapter.
  3. Connect to gun/lance: Attach the gun‑end coupler to your trigger gun or lance; ensure connections click and lock.
  4. Purge air: Squeeze the trigger briefly to purge air and confirm steady flow before approaching vehicles.
  5. Wash vehicles: Run the hose along the ground or use a reel; avoid sharp bends or pinching in doors/rails.
  6. Rinse and drain: After washing, flush the hose with clean water and drain fully, especially in freezing conditions.
  7. Store properly: Coil loosely or use a hose reel; keep out of direct sun and away from chemicals when possible.

Equipment & Setup Recommendations


Pair this hose with a commercial‑grade pressure washer and appropriate fittings for fleet washing. It’s ideal behind 3/8″ quick‑connect systems on gas or electric machines used for trucks and trailers.
  • Pressure washer: Use with units up to 4000 PSI and within the 310 °F temperature rating.
  • Fittings: Ensure your pump and gun use 3/8″ quick couplers or adapt with an M22‑to‑3/8″ kit.
  • Reel: Mount on a 3/8″ hose reel for cleaner bays and longer hose life.
  • Swivels: Add a 3/8″ hose swivel at the gun to reduce twist and operator fatigue.
  • Chemical compatibility: Suitable for typical truck wash soaps and degreasers; flush after heavy chemical use.

Benefits + Features

  • 4000 PSI working pressure for demanding commercial truck and fleet washing.
  • 3/8″ inner diameter to support high‑flow pressure washers without choking performance.
  • Smooth non‑marking blue jacket that won’t scuff paint, trim, or facility surfaces.
  • Thicker inner wall for improved resistance to gashes, abrasion, and blowouts.
  • 310 °F heat rating for hot‑water and cold‑water fleet wash applications.amazon+1
  • Stainless steel quick couplers for fast, reliable connections and better corrosion resistance.
  • “Bite the Wire” hose‑end tech for secure crimp and reduced leak risk.
  • USA‑made construction with robust materials for daily commercial use.
  • Flexible yet durable design that balances handling comfort with long‑term reliability.
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