OE Quality
60-Day Returns

Mahle B32303 Secondary Air Injection Pump Check Valve Gasket
Overview of Mahle Secondary Air Injection Pump Check Valve Gasket
The Mahle Secondary Air Injection Pump Check Valve Gasket (Part Number B32303) is designed to provide a reliable seal in emission control systems. Crafted from durable graphite material, this gasket ensures proper sealing performance for BMW and Land Rover vehicles, including models like the 318i, 328i, 740i, Range Rover, and X5.
- Constructed from high-quality graphite for heat resistance and durability
- Precise dimensions: 2.17 inches (55.0 mm) length, 0.74 inches (18.81 mm) inside diameter
- Thickness options of 0.04 inches (1.05 mm) to ensure a secure fit
- Silver color for easy identification during installation
- Equipped with two mounting holes, each 0.29 inches (7.52 mm) in diameter
Detailed Product Description and Specifications
This secondary air injection pump check valve gasket is engineered to maintain a tight seal within the emission control system, preventing air leaks that could affect engine performance and emissions. The graphite material offers excellent thermal stability and chemical resistance, making it suitable for the demanding environment of the secondary air injection system. The gasket’s dimensions, including a length of 2.17 inches (55.0 mm), width of 1.22 inches (31.1 mm), and thickness ranging from 0.04 inches (1.05 mm), are designed to match OEM specifications for a precise fit. The two mounting holes with a diameter of 0.29 inches (7.52 mm) facilitate secure attachment to the check valve assembly.
Compatible Vehicles and Applications
This gasket is compatible with a range of BMW and Land Rover models, specifically designed for the secondary air injection pump check valve. Compatible vehicles include BMW 318i, 318is, 318ti, 328Ci, 328i, 328is, 528i, 530i, 540i, 740i, 740iL, and Z3, as well as Land Rover Range Rover and X5 models. Using the correct gasket ensures proper function of the secondary air injection system, which helps reduce emissions during cold starts.
Common Issues Addressed by This Gasket
- Prevents air leaks in the secondary air injection pump check valve
- Helps maintain proper emission control system operation
- Reduces risk of check valve failure due to improper sealing
- Minimizes exhaust emissions during engine warm-up
- Prevents engine performance issues related to air injection system leaks
Installation Notes and Tips
When installing the Mahle B32303 gasket, ensure the mating surfaces are clean and free of debris to achieve an optimal seal. Verify the gasket orientation matches OEM specifications and align the two mounting holes precisely with the check valve assembly. Avoid over-tightening mounting bolts to prevent gasket damage. It is recommended to inspect the secondary air injection pump and check valve for wear or damage during installation.
Quality Assurance and Warranty Information
Mahle manufactures this secondary air injection pump check valve gasket to meet strict quality standards, ensuring reliable performance and durability. The graphite material is selected for its resistance to heat and chemical exposure typical in emission control systems. While specific warranty details may vary, Mahle products generally come with a limited warranty against manufacturing defects. Refer to the product documentation or Mahle’s official resources for exact warranty terms.
| Brand | Mahle |
| Part Number | B32303 |
| Color | Silver |
| Inside Diameter | 0.74 |
| Inside Diameter | 18.81 |
| Length | 2.17 |
| Length | 55.0 |
| Material | Graphite |
| Mounting Hole Diameter | 0.29 |
| Mounting Hole Diameter | 7.52 |
| Mounting Hole Quantity | 2 |
| Thickness | 0.04 |
| Thickness | 1.05 |
| Width | 1.22 |
| Width | 31.1 |
This part fits 58 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2005 | Land Rover | Range Rover | 4.4L | V8 | N/A | Engine Oil Pan Gasket set includes Composite EGR Valve Gasket and Carburetor Mounting Gasket. |
| 2004 | Land Rover | Range Rover | 4.4L | V8 | N/A | Engine Oil Pan Gasket set includes Composite EGR Valve Gasket and Carburetor Mounting Gasket. |
| 2003 | BMW | 540i | 4.4L | V8 | N/A | Engine Oil Pan Gasket set includes Composite EGR Valve Gasket and Carburetor Mounting Gasket. |
| 2003 | BMW | X5 | 4.6L | V8 | N/A | Engine Oil Pan Gasket set includes Composite EGR Valve Gasket and Carburetor Mounting Gasket. |
| 2003 | BMW | X5 | 4.4L | V8 | N/A | Engine Oil Pan Gasket set includes Composite EGR Valve Gasket and Carburetor Mounting Gasket. |
| 2003 | Land Rover | Range Rover | 4.4L | V8 | N/A | Engine Oil Pan Gasket set includes Composite EGR Valve Gasket and Carburetor Mounting Gasket. |
| 2002 | BMW | 540i | 4.4L | V8 | N/A | Engine Oil Pan Gasket set includes Composite EGR Valve Gasket and Carburetor Mounting Gasket. |
| 2002 | BMW | X5 | 4.6L | V8 | N/A | Engine Oil Pan Gasket set includes Composite EGR Valve Gasket and Carburetor Mounting Gasket. |
| 2002 | BMW | X5 | 4.4L | V8 | N/A | Engine Oil Pan Gasket set includes Composite EGR Valve Gasket and Carburetor Mounting Gasket. |
| 2001 | BMW | 540i | 4.4L | V8 | N/A | Engine Oil Pan Gasket set includes Composite EGR Valve Gasket and Carburetor Mounting Gasket. |
| 2001 | BMW | 740i | 4.4L | V8 | N/A | Engine Oil Pan Gasket set includes Composite EGR Valve Gasket and Carburetor Mounting Gasket. |
| 2001 | BMW | 740iL | 4.4L | V8 | N/A | Engine Oil Pan Gasket set includes Composite EGR Valve Gasket and Carburetor Mounting Gasket. |
| 2001 | BMW | X5 | 4.4L | V8 | N/A | Engine Oil Pan Gasket set includes Composite EGR Valve Gasket and Carburetor Mounting Gasket. |
| 2000 | BMW | 328Ci | 2.8L | L6 | N/A | Engine Oil Pan Gasket set includes Composite EGR Valve Gasket and Carburetor Mounting Gasket. |
| 2000 | BMW | 328i | 2.8L | L6 | N/A | Engine Oil Pan Gasket set includes Composite EGR Valve Gasket and Carburetor Mounting Gasket. |
| 2000 | BMW | 528i | 2.8L | L6 | N/A | Engine Oil Pan Gasket set includes Composite EGR Valve Gasket and Carburetor Mounting Gasket. |
| 2000 | BMW | 540i | 4.4L | V8 | N/A | Engine Oil Pan Gasket set includes Composite EGR Valve Gasket and Carburetor Mounting Gasket. |
| 2000 | BMW | 740i | 4.4L | V8 | N/A | Engine Oil Pan Gasket set includes Composite EGR Valve Gasket and Carburetor Mounting Gasket. |
| 2000 | BMW | 740iL | 4.4L | V8 | N/A | Engine Oil Pan Gasket set includes Composite EGR Valve Gasket and Carburetor Mounting Gasket. |
| 2000 | BMW | X5 | 4.4L | V8 | N/A | Engine Oil Pan Gasket set includes Composite EGR Valve Gasket and Carburetor Mounting Gasket. |
| 2000 | BMW | Z3 | 2.8L | L6 | N/A | Engine Oil Pan Gasket set includes Composite EGR Valve Gasket and Carburetor Mounting Gasket. |
| 1999 | BMW | 318i | 1.9L | L4 | N/A | Engine Oil Pan Gasket set includes Composite EGR Valve Gasket and Carburetor Mounting Gasket. |
| 1999 | BMW | 318is | 1.9L | L4 | N/A | Engine Oil Pan Gasket set includes Composite EGR Valve Gasket and Carburetor Mounting Gasket. |
| 1999 | BMW | 318ti | 1.9L | L4 | N/A | Engine Oil Pan Gasket set includes Composite EGR Valve Gasket and Carburetor Mounting Gasket. |
| 1999 | BMW | 328i | 2.8L | L6 | N/A | Engine Oil Pan Gasket set includes Composite EGR Valve Gasket and Carburetor Mounting Gasket. |
| 1999 | BMW | 328is | 2.8L | L6 | N/A | Engine Oil Pan Gasket set includes Composite EGR Valve Gasket and Carburetor Mounting Gasket. |
| 1999 | BMW | 528i | 2.8L | L6 | N/A | Engine Oil Pan Gasket set includes Composite EGR Valve Gasket and Carburetor Mounting Gasket. |
| 1999 | BMW | 540i | 4.4L | V8 | N/A | Engine Oil Pan Gasket set includes Composite EGR Valve Gasket and Carburetor Mounting Gasket. |
| 1999 | BMW | 740i | 4.4L | V8 | N/A | Engine Oil Pan Gasket set includes Composite EGR Valve Gasket and Carburetor Mounting Gasket. |
| 1999 | BMW | 740iL | 4.4L | V8 | N/A | Engine Oil Pan Gasket set includes Composite EGR Valve Gasket and Carburetor Mounting Gasket. |
| 1999 | BMW | Z3 | 2.8L | L6 | N/A | Engine Oil Pan Gasket set includes Composite EGR Valve Gasket and Carburetor Mounting Gasket. |
| 1998 | BMW | 318i | 1.9L | L4 | N/A | Engine Oil Pan Gasket set includes Composite EGR Valve Gasket and Carburetor Mounting Gasket. |
| 1998 | BMW | 318is | 1.9L | L4 | N/A | Engine Oil Pan Gasket set includes Composite EGR Valve Gasket and Carburetor Mounting Gasket. |
| 1998 | BMW | 318ti | 1.9L | L4 | N/A | Engine Oil Pan Gasket set includes Composite EGR Valve Gasket and Carburetor Mounting Gasket. |
| 1998 | BMW | 328i | 2.8L | L6 | N/A | Engine Oil Pan Gasket set includes Composite EGR Valve Gasket and Carburetor Mounting Gasket. |
| 1998 | BMW | 328is | 2.8L | L6 | N/A | Engine Oil Pan Gasket set includes Composite EGR Valve Gasket and Carburetor Mounting Gasket. |
| 1998 | BMW | 528i | 2.8L | L6 | N/A | Engine Oil Pan Gasket set includes Composite EGR Valve Gasket and Carburetor Mounting Gasket. |
| 1998 | BMW | 540i | 4.4L | V8 | N/A | Engine Oil Pan Gasket set includes Composite EGR Valve Gasket and Carburetor Mounting Gasket. |
| 1998 | BMW | 740i | 4.4L | V8 | N/A | Engine Oil Pan Gasket set includes Composite EGR Valve Gasket and Carburetor Mounting Gasket. |
| 1998 | BMW | 740iL | 4.4L | V8 | N/A | Engine Oil Pan Gasket set includes Composite EGR Valve Gasket and Carburetor Mounting Gasket. |
| 1998 | BMW | Z3 | 2.8L | L6 | N/A | Engine Oil Pan Gasket set includes Composite EGR Valve Gasket and Carburetor Mounting Gasket. |
| 1998 | BMW | Z3 | 1.9L | L4 | N/A | Engine Oil Pan Gasket set includes Composite EGR Valve Gasket and Carburetor Mounting Gasket. |
| 1997 | BMW | 318i | 1.9L | L4 | N/A | Engine Oil Pan Gasket set includes Composite EGR Valve Gasket and Carburetor Mounting Gasket. |
| 1997 | BMW | 318is | 1.9L | L4 | N/A | Engine Oil Pan Gasket set includes Composite EGR Valve Gasket and Carburetor Mounting Gasket. |
| 1997 | BMW | 318ti | 1.9L | L4 | N/A | Engine Oil Pan Gasket set includes Composite EGR Valve Gasket and Carburetor Mounting Gasket. |
| 1997 | BMW | 328i | 2.8L | L6 | N/A | Engine Oil Pan Gasket set includes Composite EGR Valve Gasket and Carburetor Mounting Gasket. |
| 1997 | BMW | 328is | 2.8L | L6 | N/A | Engine Oil Pan Gasket set includes Composite EGR Valve Gasket and Carburetor Mounting Gasket. |
| 1997 | BMW | 528i | 2.8L | L6 | N/A | Engine Oil Pan Gasket set includes Composite EGR Valve Gasket and Carburetor Mounting Gasket. |
| 1997 | BMW | Z3 | 2.8L | L6 | N/A | Engine Oil Pan Gasket set includes Composite EGR Valve Gasket and Carburetor Mounting Gasket. |
| 1997 | BMW | Z3 | 1.9L | L4 | N/A | Engine Oil Pan Gasket set includes Composite EGR Valve Gasket and Carburetor Mounting Gasket. |
| 1996 | BMW | 318i | 1.9L | L4 | N/A | Engine Oil Pan Gasket set includes Composite EGR Valve Gasket and Carburetor Mounting Gasket. |
| 1996 | BMW | 318is | 1.9L | L4 | N/A | Engine Oil Pan Gasket set includes Composite EGR Valve Gasket and Carburetor Mounting Gasket. |
| 1996 | BMW | 318ti | 1.9L | L4 | N/A | Engine Oil Pan Gasket set includes Composite EGR Valve Gasket and Carburetor Mounting Gasket. |
| 1996 | BMW | 328i | 2.8L | L6 | N/A | Engine Oil Pan Gasket set includes Composite EGR Valve Gasket and Carburetor Mounting Gasket. |
| 1996 | BMW | 328is | 2.8L | L6 | N/A | Engine Oil Pan Gasket set includes Composite EGR Valve Gasket and Carburetor Mounting Gasket. |
| 1996 | BMW | Z3 | 1.9L | L4 | N/A | Engine Oil Pan Gasket set includes Composite EGR Valve Gasket and Carburetor Mounting Gasket. |
| 1995 | BMW | 530i | 3.0L | V8 | N/A | Engine Oil Pan Gasket set includes Composite EGR Valve Gasket and Carburetor Mounting Gasket. |
| 1994 | BMW | 530i | 3.0L | V8 | N/A | Engine Oil Pan Gasket set includes Composite EGR Valve Gasket and Carburetor Mounting Gasket. |
* 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.