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Description
B404144 PRESSURE SENSOR R12Technical Specifications Part Type Pressure Switch (Low Pressure Cutout Cycling Switch) Part Number Bergstrom B404144 Function Normally Open Actuation (Cut In) 34 psi Deactuation (Cut Out) On Pressure Drop 10 psi (Cut Out: 6 psi) Fitting Size 1 4" Female Flare Terminal Bare Leads Lead Length 3" System R12 R134a (Low Pressure Cycling) Features Low Pressure Safety Cycling Switch for A C Cross References Brand Part Number Bergstrom B404144 Kysor 2299001
Technical Specifications
| Part Type | Pressure Switch (Low Pressure Cutout / Cycling Switch) |
| Part Number | Bergstrom B404144 |
| Function | Normally Open |
| Actuation (Cut In) | 34 psi |
| Deactuation (Cut Out) | On Pressure Drop 10 psi (Cut Out: 6 psi) |
| Fitting Size | 1/4" Female Flare |
| Terminal | Bare Leads |
| Lead Length | 3" |
| System | R12 / R134a (Low Pressure Cycling) |
| Features | Low Pressure Safety / Cycling Switch for A/C |
Cross References
| Brand | Part Number |
|---|---|
| Bergstrom | B404144 |
| Kysor | 2299001 |
Vehicle Fitment
| Make | Model | Model Years | Engine / Application |
|---|---|---|---|
| KENWORTH | T680, T880, W900, T800 | 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026 | • Paccar MX / Cummins / Detroit Diesel • Low Pressure Switch (A/C) |
| T600, T660, T700 | 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016 | • Paccar / Caterpillar / Cummins • A/C Low Pressure Cycling Switch |
|
| K300, K500, C500 | 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012 | • Paccar MX Engines • Low Pressure Safety Switch |
|
| All Kenworth with Bergstrom A/C | 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026 | • A/C Low Pressure Switch | |
| PETERBILT | 579, 567, 389, 388 | 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026 | • Paccar MX / Cummins / Detroit Diesel • Low Pressure Switch (A/C) |
| 386, 384, 365, 367 | 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016 | • Paccar / Caterpillar / Cummins • A/C Low Pressure Cycling Switch |
|
| 379, 378, 377, 375 | 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012 | • Paccar MX Engines • Low Pressure Safety Switch |
|
| All Peterbilt with Bergstrom A/C | 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026 | • A/C Low Pressure Switch |
Shipping Notes
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Exchange/Return Notes
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4.2 ★★★★★
Based on 969 reviews
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Product Reviews
★★★★★ 5
Nice shirt, could be more "slim fit" in LG size...
Fit Type: Slim Fit, Color: White, Size: X-Large
This is a very nice shirt, good quality, reasonable cost. I am 6'-3", 190 lbs. ,33" waist, 44 chest, a slim (not so young anymore) athletic build:)
The Medium size was a good chest & waist fit for a slim fit look, but the arms were too short. I had to go with a Large size for the sleeve length. With the Large size, the chest is good, but the waist is a too loose for me to be a "slim fit". I am keeping the shirt anyway, it's very comfortable with soft & thick material.
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Reviewed in the United States on June 6, 2023
★★★★★ 5
Worked well first try
Fit Type: Slim Fit, Color: Grey, Size: X-Large
Very nice. Satisfied
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Reviewed in the United States on May 18, 2026
★★★★★ 4
Great price with good quality - Just be prepared to iron it.
Fit Type: Slim Fit, Color: Grey, Size: X-Large
Nice shirt, especially for the price. You will need to iron it to get the wrinkles out, as I have a professional steamer, and it still looks unfinished even when using it.
If you iron and starch it, it will look very nice, and it does not wrinkle as badly as I thought it would.
The fit is perfect, and the softness, color, and feel are nice as well. This shirt can go from casual to dress right out of the closet (ironed, of course).
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Reviewed in the United States on January 21, 2026
★★★★★ 5
Nice long sleeve Oxford shirt
Fit Type: Slim Fit, Color: White, Size: Medium
Exactly what I expected plus fast delivery. Amazon essentials offer great value for the price.
Note: I wish #Amazon would give points for reviewing items as an incentive just as #AliExpress does.
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Reviewed in the United States on May 3, 2026
★★★★★ 5
Count on shrinkage when choosing your size.
Fit Type: Slim Fit, Color: White, Size: X-Large
I bought this shirt earlier and got an XL. It came and it fit perfectly. Couldn't believe it, but then I wondered what it would look like after one washing. It shrank. Not so bad that I couldn't wear it, but it no longer looked "perfect" and I I don't dare put on 5 pounds. But I liked the shirt overall, so I went back and ordered another, this time an XXL. It came, I tried it on and while it worked, it was slightly larger than I wanted. Instead of returning it, I washed it, and like the first, it shrunk, but it shrunk to a size that looked good and was comfortable. Lesson: you might want to go one size larger than you would ordinarily get, wear it to see how it fits, and if it seems too large, wash it and see if it makes a difference. The first shirt I would give 4 stars because shrinkage took away from it, but I'd give the second 5 stars because even more so after washing, the fit was very nice.
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Reviewed in the United States on April 23, 2025