BVSN437AZ Genuine Mazda ABS Hydraulic Control Unit
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Unit Auto Parts LLC provides a complimentary 2-Year Warranty on all automotive parts. Shop with confidence knowing your purchase is protected. Learn More
The BVSN437AZ is a genuine Mazda ABS hydraulic control unit designed for select 2004–2009 Mazda 3 models equipped with 2.0L or 2.3L gasoline engines. This assembly incorporates an ABS pump, motor, accumulator, and proportioning valve to control hydraulic pressure during braking, helping the wheels maintain traction when the anti-lock system engages.
| Year | Vehicle | Engine | Trims |
|---|---|---|---|
| 2004 | Mazda 3 | 2.3L L4 Gas | S |
| 2004 | Mazda 3 | 2.0L L4 Gas | i |
| 2005 | Mazda 3 | 2.3L L4 Gas | S |
| 2005 | Mazda 3 | 2.3L L4 Gas | SP23 |
| 2005 | Mazda 3 | 2.0L L4 Gas | i |
| 2006 | Mazda 3 | 2.3L L4 Gas | S |
| 2006 | Mazda 3 | 2.0L L4 Gas | i |
| 2007 | Mazda 3 | 2.3L L4 Gas | Mazdaspeed |
| 2007 | Mazda 3 | 2.3L L4 Gas | S |
| 2007 | Mazda 3 | 2.0L L4 Gas | i |
| 2008 | Mazda 3 | 2.3L L4 Gas | Mazdaspeed |
| 2008 | Mazda 3 | 2.3L L4 Gas | S |
| 2008 | Mazda 3 | 2.0L L4 Gas | i |
| 2009 | Mazda 3 | 2.3L L4 Gas | Mazdaspeed |
| 2009 | Mazda 3 | 2.3L L4 Gas | S |
| 2009 | Mazda 3 | 2.0L L4 Gas | i |
| Condition | New |
| Part Number | BVSN437AZ |
| Brand | Mazda |
| Part Type | ABS Hydraulic Control Unit |
| Years | 2004–2009 |
| Vehicle | Mazda 3 |
| Engine | 2.0L L4 Gas, 2.3L L4 Gas |
| System | Anti-Lock Braking System (ABS) |
| Included Components | Hydraulic Pump, Motor, Accumulator, Proportioning Valve |
| Stability Control | Without Stability Control |
| Fitment Type | Direct Replacement |
| Weight | 6.25 lb |
The BVSN437AZ Mazda ABS hydraulic control unit is built to coordinate brake fluid distribution through the original anti-lock braking equipment of compatible Mazda 3 vehicles:
The BVSN437AZ is intended for select 2004–2009 Mazda 3 vehicles with 2.0L or 2.3L gasoline engines, including compatible i, S, SP23, and Mazdaspeed trims without stability control. Installation requires comparing the original hydraulic unit, brake pipe connections, electrical interface, and mounting arrangement, followed by the applicable ABS bleeding procedure.
Always confirm the vehicle VIN, original ABS assembly number, stability control configuration, hydraulic port arrangement, and Mazda-specific bleeding instructions before installation.