BMW E34 Series 5 A/C Pressure Switch Cross Reference
Brand Name | Reference Number |
BMW OE Style | E34 Series Reference |
Hella | 6ZL 351 028-021 |
Vemo | V20-73-0001 |
Behr | 8UW 351 233-001 |
Four Seasons | 36662 |
Santech | MT0216 |
Technical Specifications for E34 Wholesale
Technical Parameter | Specification Detail |
Thread Size | 7/16-20 UNF Female |
High Pressure Cut Off | 32.3 kg/cm² OFF |
Medium Pressure Trigger | 19.5 kg/cm² ON |
Low Pressure Cut Off | 2.8 kg/cm² OFF |
Control Logic | Triple Function Trinary Switch |
Material Quality | Heavy Duty Machined Brass or Aluminum |
Certification | IATF 16949 Certified |
BMW E34 Vehicle Application and Compatibility
Vehicle Make | Vehicle Model | Year Range |
BMW | 525i (E34) | 1989 to 1995 |
BMW | 535i (E34) | 1989 to 1993 |
BMW | 540i (E34) | 1993 to 1995 |
BMW | M5 (E34) | 1991 to 1993 |
BMW | 735i / 740i (E32) | 1988 to 1994 |
Sourcing BMW E34 Pressure Switches FAQs
Why is the 19.5 kg/cm² medium pressure trigger critical for BMW E34 models?
The E34 Series 5 relies on a multi stage cooling fan system to manage engine and A/C temperatures. At 19.5 kg/cm², our switch sends a precise signal to engage the auxiliary fan, preventing the high side pressure from reaching the 32.3 kg/cm² cut off. This ensures the luxury cabin stays cool even in heavy traffic. Every unit is calibrated on an automated pressure bench to ensure this threshold is met according to original German specifications.
Can we implement our own brand logo on the BMW E34 switches for wholesale orders?
Yes. For our professional importers and European specialty wholesalers, we offer full private label services. This includes high definition laser etching of your brand logo and the custom part number directly on the sensor body. We also provide professional bulk packaging and custom box designs that meet the premium branding requirements of the BMW aftermarket.
What is the standard lead time for manufacturing a wholesale order of this switch?
Our fixed manufacturing lead time is 60 days. This duration is strictly necessary to fulfill our IATF 16949 quality protocols, which include precision diaphragm calibration and exhaustive vacuum leak testing for the 7/16-20 UNF female threads. This ensures that every E34 switch you receive is of the highest professional grade and ready for immediate high volume distribution.
Is this switch compatible with the R134a conversions common in the BMW E34 fleet?
Absolutely. While many E34 vehicles originally used R12, our modern manufacturing uses internal seals and diaphragms that are fully compatible with HFC R134a and modern PAG oils. This makes it a perfect replacement for classic BMWs that have been retrofitted to modern environmental standards.
Do you support mixed wholesale orders for different BMW electrical sensors?
Yes. We prioritize the flexibility needed by international distributors. You can combine the E34 trinary switch with other BMW or European electrical sensors to meet our 100 unit MOQ. This consolidation helps significantly reduce your per unit shipping and logistics costs for maritime or air freight.
How are the 7/16-20 UNF female threads protected during international shipping?
Each BMW E34 switch is individually sealed in a moisture proof industrial bag. For bulk orders, we utilize reinforced export grade cartons with internal shock absorbing dividers to prevent the threads and internal pins from bending or corroding. This ensures your order arrives in showroom condition ready for your premium retail or wholesale clients.
