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Yellow Jacket 42004 Refrigeration Manifold

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SKU: yj_42004 Categories: , Tag: Brand:

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The Yellow Jacket 42004 “Series 41” Manifold has been the industry’s standard for both ease-of-use & durability. Since the 1970s, the brass, two-valve device has been the “go-to” for technicians worldwide. It comes with a 3-Pack of 60″ PLUS II™ RYB hoses with standard fittings.

“We’ve met technicians using the 41 Series Manifold for 20 years or more,” said Michael Lanners, VP of Domestic Sales & Marketing for Ritchie Engineering. Today, according to Lanners, the “Series 41” remains the No. 1-selling manifold in the HVAC/R world.

The 42004 has explicitly become the number one seller in the lineup, with its convenient color-coded refrigerant scales & pressure arcs & large numbers for high visibility. The Yellow Jacket 42004 is combined with more extensive, easier-to-read 3-1/8″ color-coded gauges in rugged steel cases with polycarbonate crystals. It also features 1% accuracy (Class 1) for an exact reading in critical charge systems.

This manifold line is designed for HVAC/R techs who appreciate the quality & durability of Yellow Jacket products.

To purchase Manifold, only see Yellow Jacket 42001.


  • (1) Yellow Jacket 42004 Series 41 Manifold
  • (1) 3-Pack of 60″ PLUS II™ RYB hoses with standard fittings
  • (1) Operating Manual


  • Color-coded scales
  • Larger dials are bold and easy to read
  • 1% accuracy (Class 1)
  • Sliding double “O” ring pistons reduce wear
  • Long life nylon seats
  • Forged brass body for durability
  • Full porting maximizes capacity and flow
  • Full-size metal valve handles for easy operation
  • Color-coded, 60″ PLUS II™ hoses with standard 1/4″ flare fittings
  • Hose assemblies UL recognized for 4000 psi (275 bar) burst and 800 psi (55 bar) working pressure. File# SA9737
  • Made in the USA
  • 1 Year Limited Warranty


Refrigerants measured : R-22, 404A, and 410A
Gauges : Red/Blue, 3-⅛”, with steel casing and polycarbonate crystal
Body : Forged brass
Hoses : Yes; ¼” Red, Yellow, Blue 3-pack
Hose Length : 60”
°F/°C : Farenheit


Q & A

Would the hoses come with low loss fittings?

No, the hoses included with the 42004 have standard fittings.

What are the differences between this 42004 manifold and the 42006?

The major difference would be the refrigerants they measure. The 42004 measures R-22, 404A, and 410A; and the 42006 measures R-22, 134a, and 404A. Other than that, both include 60” Plus II RYB Hoses and are forged brass bodies.

Do the hoses include a Schrader valve depressor?

Yes they do.

Can you do a system pump down with this manifold and gauge set?

Certainly, just follow the procedures required by your vacuum pump.

Customer Reviews

Based on 3 reviews
High quality long lasting

The Yellow Jacket products in my opinion provide high quality, long lasting products. This is a great gauge to check pressures and charge up a/c units.

Rongjie Huang

Great service and tools!

Amazing Brand

This brand is the best! It's well-known in the AC industry. This is the reason I got this Manifold. Shipping was super fast. Was actually surprised.