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- USA
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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
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
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- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.8 ★★★★★
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Product Reviews
★★★★★ 5
Great oil and makes my engine run quieter
I noticed the engine running much quieter using this oil. The pour mouth is pretty unique for this brand, you can just open the interior cap, pull up the accordion neck and pour into the engine which provides better control over traditional wide mouth, thus less messy. This oil rarely goes on sale and is typically 1.5x to 2x more expensive than the more common US brands.
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Reviewed in the United States on August 28, 2025
★★★★★ 5
Best synthetic oil BMW
Excellent synthetic oil BMW 328I
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 6, 2026
★★★★★ 5
Last long
Love it ! Since I have a BMW this oil it’s good for it .
The Price is good . Last long . No engine noise
Or oil burning. Even the color looks good after 3 months.
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Reviewed in the United States on March 9, 2026
★★★★★ 5
FRIENDLY REMINDER Don't overtighten the bolts
MUCH better than the cheap plastic OEM part, Just a reminder though, these thread into an aluminum block so be very careful to start them finger tight first, then evenly tighten both bolts to push the fitting into the chamber. If you don't, it will slightly misalign and you run the risk of stripping the threads. The one comes with the replacement o ring, and be sure to get some antifreeze on that seal prior to attempting to push it into the chamber. IT IS A TIGHT FIT, but that's what you want, so just be careful. You might also want an extra hose clamp on hand, as the one that came with this began to bend as it got tight, so I had to replace it for peace of mind. Overall, great product though.
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Reviewed in the United States on January 9, 2026
★★★★★ 5
Strong product
Great quality
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Reviewed in the United States on March 11, 2026