Mahle B32303 Secondary Air Injection Pump Check Valve Gasket

Mahle B32303 Secondary Air Injection Gasket

Mahle B32303 is a graphite secondary air injection pump check valve gasket built for sealing performance in emission control service. It is sized for a precise fit and is used on select BMW and Land Rover applications where a stable seal is needed between the pump check valve and mating surface.

Key Features

• Graphite sealing material for heat-resistant emission system service
• Silver finish with a compact profile for tight engine bay packaging
• Measures 2.17 in. long, 1.22 in. wide, and 0.04 in. thick
• Inside diameter: 0.74 in. for accurate alignment
• Two mounting holes with 0.29 in. diameter for proper positioning
• Mahle part number B32303 for direct catalog identification

Detailed Description

Mahle B32303 is a secondary air injection pump check valve gasket engineered for emission control sealing applications. The graphite construction helps maintain a consistent seal under elevated exhaust-side temperatures, while the compact dimensions support accurate fitment at the check valve interface. Mahle gaskets are used by OEMs and technicians worldwide for sealing applications that demand dependable surface contact and dimensional consistency. This part cross-references BMW 11 72 1 744 228 and FEL-PRO 72996 for the same application.

Compatible With select BMW and Land Rover models, including Fits 2003-2005 Land Rover Range Rover, N/A; Fits 1998-2003 BMW 540i, N/A; Fits 2000-2003 BMW X5, N/A; Fits 1998-2001 BMW 740i, N/A; Fits 1998-2001 BMW 740iL, N/A; Fits 2000 BMW 328Ci, N/A; Fits 1996-2000 BMW 328i, N/A; Fits 1997-2000 BMW 528i, N/A; Fits 1996-2000 BMW Z3, N/A; Fits 1996-1999 BMW 318i, N/A; Fits 1996-1999 BMW 318is, N/A; Fits 1996-1999 BMW 318ti, N/A; Fits 1996-1999 BMW 328is, N/A; Fits 1994-1995 BMW 530i, N/A. Mahle B32303 is a practical replacement when servicing the secondary air injection system on BMW 540i, BMW X5, and Range Rover platforms.

What It Helps Address

• Exhaust or air leakage at the secondary air injection check valve flange
• Failed sealing surface caused by heat cycling and age
• Emission system fault conditions related to poor gasket sealing
• Unstable idle or drivability concerns tied to air injection sealing issues
• Service replacement needs during BMW and Land Rover emission repairs

Installation Notes and Tips

Inspect the mating surfaces before installation and remove carbon buildup, corrosion, or old gasket material. Confirm the gasket orientation against the check valve and verify the mounting holes align cleanly before tightening fasteners to the vehicle manufacturer’s specification. For BMW 540i, BMW X5, and Range Rover emission control repairs, a clean sealing surface is critical to achieving a proper seal.

Quality Assurance

Mahle supplies sealing products used in OEM and professional repair environments, and B32303 follows that same application-focused approach to fit and material selection. Verify part number B32303 against the vehicle’s emission system configuration before installation.