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BMW Interior Parts for BMW 3 Series E46 (1999-2005)

The interior of your BMW is where you will hopefully spend most of your time, so it should be ergonomic, comfortable, and safe. All interior components, from OEM replacement switches, trim, or steering wheels, to aftermarket upgrades like racing wheels, safety equipment, and racing seats, are available at Turner Motorsport.

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P3 Euro Low Profile OBD2 Splitter

T#:590055

Part#: P3OSPLIT

In Stock

$ 30.00 USD

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$ 30.00 USD

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Turn your single OBD2 port into Two Can allow multiple devices to access ECU at the same time* Very thin, flat harness allows for easy routing and flexibility *Not all OBD2 devices can work simultaneously. P3 Gauges can be put into analog mode or low priority mode to work with other devices in some cases

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Seat Floor Adapters - E36, E46, E85 - Macht Schnell

T#:300563

Part#: 79.10.101B

Ships on Oct 9, 2026

$ 235.00 USD

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$ 235.00 USD

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In order to mount aftermarket seats in your car, you need a floor mount adapter. These high-quality aluminum adapters are made by Macht Schnell. These bolt to your existing seat mounting studs in the floor and offer the lowest profile of any floor mount (22mm height). This helps to keep your seat at the lowest position possible. Your seat adapters or sliders bolt to this adapter plate. These floor mounts are a matrix style with rows of threaded holes that allow you to find an ideal seat location. There are other options - including homemade - but these seat brackets for your BMW are the highest quality to match your expensive seats.

Sold per seat. Can be used on left or right sides of vehicle.

These adapters were originally designed for the E46 chassis. They can fit the E36 by modifying the mounting holes to match the bolt and stud locations on the E36 floor.

This item fits the following BMWs:
1995-1999 E36 BMW 318i 318is 318ti 318i 323is 323i 325i 325is 325i 328i 328is 328i M3 (except convertibles) ( see note above )
1999-2005 E46 BMW 323i 323ci 325i 325ci 325xi 328i 328ci 330i 330ci 330xi M3 (except convertibles)
2003-2008 E85 E86 BMW Z4 2.5i Z4 3.0i Z4 3.0si Z4 M Roadster M Coupe

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Macht Schnell Driver Side Clubsport Seat Mount - E46 BMW

T#:16907170

Part#: 70.10.201

In Stock

$ 325.00 USD

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$ 325.00 USD

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Performance Seat Mounting Kit

Revamp your racing seat setup with this comprehensive mounting kit, designed for precision, adjustability, and durability. Here are the key features:

Crafted from a single piece of 1/8” carbon steel for precise construction
SmoothGlide seat sliders with adjustment handle included
Installs onto factory bolt locations for precise fitment
Multiple adjustment options for precise centering
Offers 5 & 6 point sub belt mounting locations
Single-tool adjustments facilitated by bottom locking hardware
Utilizes high-grade 10.9 hardware for optimal strength
Powder-coated finish on base and side mounts for durability
Includes nylon side mount spacers for enhanced stability

Upgrade your racing setup with this top-notch mounting kit, available in standard and wide widths.

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P3 Ethanol Sensor Voltage Adaptor

T#:594257

Part#: P3ESVA

In Stock

$ 85.00 USD

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$ 85.00 USD

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Allows 0-5 Volt Linear Output Gauges To Read Output From GM/Continental Ethanol Sensor

LC-2 Digital Wideband O2 Sensor Kit

T#:2750688

Part#: P3LC2WB

In Stock

$ 249.00 USD

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$ 249.00 USD

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Upgrade your BMW's performance monitoring capabilities with the Innovate Motorsports LC-2 wideband kit, offering precise AFR readings right on your Multi-Gauge. Keep track of your engine's air/fuel ratio without cluttering your interior. The LC-2 employs advanced DirectDigital™ signal processing technology to accurately measure engine performance under various loads, compensating for changes in temperature, altitude, and sensor condition.

Key Benefits:

Direct integration with P3 Multi-Gauge using analog input
Patented DirectDigital™ Wideband Technology ensures accuracy
Compatible with all fuel types for versatile application
Self-calibrating circuitry maintains accuracy over time
Integrated dual-color LED for easy monitoring
Two fully programmable analog outputs for enhanced flexibility
Real-time display data on screen or via LogWorks software

Enhance your BMW's performance monitoring capabilities with the Innovate Motorsports LC-2 wideband kit, offering precision and versatility in one package.

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Ethanol Content Sensor With Harness

T#:10095926

Part#: P3ESEN

Ships in 4 Business Days

$ 110.99 USD

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$ 110.99 USD

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The P3 Gauge Ethanol Content Sensor with Harness (P3ESEN) provides a seamless way to access ethanol readouts on your P3 Gauge. This sensor offers a convenient solution to monitor ethanol content, ensuring you have real-time information about your fuel mixture to enhance your vehicle's performance.

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Seatbelt 4-point Race Harness Receptacles - Macht Schnell

T#:338505

Part#: 79.12.15X

Ships on Sep 25, 2026

Starting at $ 125.00 USD

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Starting at $ 125.00 USD

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If you're going to use a 4 point racing harness with your racing or sport seat and don't want to drill through your floor and carpet, these harness adapter plates are perfect*. These sandwich in between your slider and seat bracket for a strong and secure mounting point. They are made from high-strength steel and powedercoated in stealthy black. Choose from a bolt-in or clip-in style harness end. These will only work with the Macht Schnell floor mounts.

* - note that most racing harness manufacturers will advise that drilling through the floor is the best method for mounting harnesses. This allows you to locate the mount in the ideal location and angle to fit your driving position. The proper installation is paramount to ensure the harness works correctly in an impact.

Sold per seat.

This item fits the following BMWs:
2008-2012 E82 BMW 128i 135i 1M Coupe
1992-1998 E36 BMW 318i 318is 318ti 323is 325i 325is 328i 328is M3
1999-2005 E46 BMW 323i 323ci 325i 325ci 325xi 328i 328ci 330i 330ci 330xi M3 (not convertibles)
2006-2011 E90 BMW 325i 325xi 328i 328xi 328i xDrive 330i 330xi 335d 335i 335xi 335i xDrive M3 - Sedan
2006-2012 E91 BMW 325xi 328i 328xi 328i xDrive - Wagon
2007-2013 E92 BMW 328i 328xi 328i xDrive 335i 335is 335xi 335i xDrive M3 - Coupe
2003-2008 E85 BMW Z4 2.5i Z4 3.0i Z4 3.0si Z4 M Roadster M Coupe

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BMW E46 Macht Schnell Passenger Side Clubsport Seat Mount - E46 BMW ...

T#:16907172

Part#: 70.10.202

Special Order: No Guaranteed ETA

$ 325.00 USD

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$ 325.00 USD

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Comes complete with mounting brackets, sliders, and adjustment mechanisms. Lightweight, strong and simple to install. Integrated locking stops for hardware provide single-tool adjustments. No modifications required for installation and fully reversible at any time. Available in standard (most race shells) and wide widths. Sold individually. Features: - Precision laser cut & formed from single piece of 1/8” carbon steel, allowing zero play. - SmoothGlide seat sliders included with adjustment handle - Mounts to factory bolt locations with precise factory fitment - Multi-way adjustability for precise centering - 5 & 6 point sub belt mounting locations - Single tool adjustments with bottom locking hardware - 10.9 Grade Hardware - Powdercoated base and side mounts - Nylon side mount spacers

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Seatbelt 6-point Race Harness Receptacles - Macht Schnell

T#:338507

Part#: 79.20.150K

Ships on Sep 25, 2026

Starting at $ 174.00 USD

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Starting at $ 174.00 USD

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Many racing series and event organizers are requiring 5 or 6-point harnesses in their events now. Attaching the anchor points to the seat base is a desired alternative to drilling holes in your floor and carpet*. This set includes the 6-point anchor to attach to the Macht Schnell floor mount as well as side attachments for either a bolt-in or snap-in harness.

* - note that most racing harness manufacturers will advise that drilling through the floor is the best method for mounting harnesses. This allows you to locate the mount in the ideal location and angle to fit your driving position. The proper installation is paramount to ensure the harness works correctly in an impact.

Sold per seat.

This item fits the following BMWs:
2008-2012 E82 BMW 128i 135i 1M Coupe
1992-1998 E36 BMW 318i 318is 318ti 323is 325i 325is 328i 328is M3
1999-2005 E46 BMW 323i 323ci 325i 325ci 325xi 328i 328ci 330i 330ci 330xi M3 (not convertibles)
2006-2011 E90 BMW 325i 325xi 328i 328xi 328i xDrive 330i 330xi 335d 335i 335xi 335i xDrive M3 - Sedan
2006-2012 E91 BMW 325xi 328i 328xi 328i xDrive - Wagon
2007-2013 E92 BMW 328i 328xi 328i xDrive 335i 335is 335xi 335i xDrive M3 - Coupe
2003-2008 E85 BMW Z4 2.5i Z4 3.0i Z4 3.0si Z4 M Roadster M Coupe

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BMW Interior Parts for BMW 3 Series E46 (1999-2005)

Sub-Categories

P3 Euro Low Profile OBD2 Splitter

Seat Floor Adapters - E36, E46, E85 - Macht Schnell

Macht Schnell Driver Side Clubsport Seat Mount - E46 BMW

Performance Seat Mounting Kit

P3 Ethanol Sensor Voltage Adaptor

LC-2 Digital Wideband O2 Sensor Kit

Key Benefits:

Ethanol Content Sensor With Harness

Seatbelt 4-point Race Harness Receptacles - Macht Schnell

BMW E46 Macht Schnell Passenger Side Clubsport Seat Mount - E46 BMW ...

Seatbelt 6-point Race Harness Receptacles - Macht Schnell

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