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Pierburg 7.21852.82.0 Secondary Air Injection Pump
Pierburg Secondary Air Injection Pump for BMW Z8
Pierburg 7.21852.82.0 is a standard replacement secondary air injection pump for emission control systems. It delivers electric operation at 13 VDC and pushes fresh air into the exhaust during cold starts to help reduce emissions and support smooth engine operation.
Compatible with 2000-2003 BMW Z8 applications listed below, this Genuine OE from HELLA part is built for direct-fit service where the original pump has failed or is no longer performing as required. Part number 7.21852.82.0 is also referenced for OE-style replacement needs on the BMW Z8.
Key Features
- Secondary air injection pump for emission control systems
- Electric operating mode for consistent cold-start air delivery
- 13 VDC electrical specification
- Standard replacement grade
- Genuine OE from HELLA branding under the Pierburg line
- Direct application for BMW Z8 model years 2000-2003
Product Details
Pierburg 7.21852.82.0 is engineered for the secondary air injection system, which introduces fresh air into the exhaust stream during cold starts. That process helps the engine reach cleaner operating conditions sooner and supports proper emissions control. For BMW Z8 owners, this pump provides an OE-level replacement path when the original unit is worn, noisy, or no longer supplying air as expected. This part cross-references BMW OE applications such as 11 17 1 390 900 and 11 72 1 433 900 for the same application.
What It Helps Address
- Cold-start emissions faults
- Secondary air injection pump failure codes
- Insufficient fresh-air delivery to the exhaust
- Rough or unstable cold-start operation tied to emissions hardware
- Noise or reduced output from a failing electric air pump
Installation Notes and Tips
Verify the OE number 11721433900 before ordering and confirm the vehicle is a 2000-2003 BMW Z8. Inspect related hoses, valves, and electrical connections during replacement so the new pump can operate correctly. The part number 7.21852.82.0 should be matched to the vehicle’s emissions system configuration before installation.
Quality Assurance
Pierburg is supplied here as Genuine OE from HELLA, giving this secondary air injection pump an OE-focused replacement profile for BMW Z8 emissions service.
| Brand | Pierburg |
| Part Number | 7.21852.82.0 |
| Position | Genuine OE from HELLA |
| Grade Type | Standard replacement |
| Operating Mode | Electric |
| Voltage [VDC] | 13 |
This part fits 4 vehicles. Search below:
| Year | Make | Model | Body Type | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|---|
| 2003 | BMW | Z8 | Convertible | 5.0L | V8 | N/A | with OE No. 11721433900; Genuine OE from HELLA |
| 2002 | BMW | Z8 | Convertible | 5.0L | V8 | N/A | with OE No. 11721433900; Genuine OE from HELLA |
| 2001 | BMW | Z8 | Convertible | 5.0L | V8 | N/A | with OE No. 11721433900; Genuine OE from HELLA |
| 2000 | BMW | Z8 | 5.0L | V8 | N/A | with OE No. 11721433900; Genuine OE from HELLA |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
This part directly replaces or is cross-referenced with the following part numbers:
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.