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| Brand Name: | original |
| Certification: | IATF/ISO/CE/SAE |
| Model Number: | 8HP55 |
This 8HP55 TCU is the electronic control core for ZF 8-speed automatics for Audi A4/A5/A6/A7/A8 RS6 and Porsche longitudinal AWD models 550-600Nm torque. It precisely controls shift solenoids and pressure. If experiencing shift jerks impacts warning lights or limp mode TCU circuit board or component failure is likely. This reman unit directly replaces your faulty one.
| Brand | Model | Year | Transmission | Drive | Engine |
|---|---|---|---|---|---|
| Audi | A4 (B8) | 2010-2013 | 8-Speed Auto (8HP55) | AWD | 3.0T / 4.2L |
| Audi | A5 (B8) | 2012-2016 | 8-Speed Auto (8HP55) | AWD | 3.0T |
| Audi | A6 (C7) | 2011-2018 | 8-Speed Auto (8HP55) | AWD | 3.0T / 4.2L |
| Audi | A7 (C7) | 2012-2018 | 8-Speed Auto (8HP55) | AWD | 3.0T / 4.2L |
| Audi | A8 (D4) | 2011-2017 | 8-Speed Auto (8HP55) | AWD | 4.2L / 6.3L |
| Audi | RS6 (C7) | 2013-2018 | 8-Speed Auto (8HP55) | AWD | 4.0T |
| Audi | RS7 (C7) | 2013-2018 | 8-Speed Auto (8HP55) | AWD | 4.0T |
| Audi | S4 (B9) | 2017-2024 | 8-Speed Auto (8HP55/AL552) | AWD | 3.0T |
| Audi | S5 (B9) | 2017-2024 | 8-Speed Auto (8HP55/AL552) | AWD | 3.0T |
| Porsche | Cayenne | 2011-2018 | 8-Speed Auto (8HP55) | AWD | 3.0T / 4.2L |
Common issues include shifting jerks or impacts (especially low gears), torque converter lock-up abnormalities causing highway vibration, transmission warning lights and limp mode. Diagnostic tools may show solenoid control circuit faults or pressure control abnormality codes. On Audi models, TCU communication faults (U0101) are also common, usually caused by circuit board soldering cracks or CAN bus interference.
Q1. Are you a factory or a trading company?
We are an integrated manufacturing and trading supplier with 22 years of experience in the automotive transmission industry.
Q2. How can we buy suitable transmission parts?
We can provide you with suitable transmission parts based on your transmission model and VIN frame number.
Q3. Do you offer sample services?
Yes, we are happy for you to choose our products to test the product quality and service. However, the express delivery fee shall be borne by you. If you are satisfied with our samples and place an order, we will deduct the sample fee you paid from your order.
Q4. Does your company provide customization services?
Yes. We can customize product labels and packaging according to your requirements.
Q5. What is your delivery date?
Under normal circumstances, the delivery date is about 5-15 working days after receiving payment.
Q6. What about your after-sales service?
All our products have a one-year warranty period, and we can provide spare parts needed for after-sales service.
Q7. Can I visit your factory?
Of course, you are welcome at any time. We can also arrange pickup services from the airport or railway station.
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