What is the purpose and process of the throttle body on BMW Z3?

The throttle body of most BMW versions consist of the throttle plates that regulates the amount of air going towards the engine and typically connected to the accelerator pedal by cable, except for 5 Series models with traction control that use Electronic Motor Load regulation (EML) system. EML simply employs an electric servo motor to drive the throttle while a sensor on the accelerator pedal sends information about position of such a throttle to the EML controller from which it is relayed further down to a particular servo motor that will enable opening or shutting down of an approximate 90 degrees valve plate. In other words, EML does not need separate cruise control actuators, transmission control cables and throttle cables as all these functions are accomplished using only one multi-pin electrical connector into which the ECU connects with its counterpart on the TB. Nevertheless, it's important to note that any repairs related to the EML system require special BMW tool and should not be undertaken without access to this tool. The steps taken when removing and installing a throttle body depend on type of engine being worked on including draining coolant systems, disconnection of cables at different points such as hoses (which also serve as vacuum lines), removal of throttle bodies which involves cleaning mating surfaces, torquing mounting nuts among others. However, extra caution have to be taken when dealing with S14 engines in order adjust certain components and make sure gasket integrity is maintained appropriately. Basically speaking these procedures ensure correct operation of TBs as well as related parts in BMW vehicles.

Genuine BMW Z3 Throttle Body

Fuel Injection Throttle Body

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7 Throttle Bodies found

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BMW Z3 Throttle Body
Part Number: 13541433414
$696.86 MSRP: $884.97
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Product Specifications
- Other Name: Throttle Housing Assy; Throttle Housing
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 1997-2000 BMW Z3 | 2.8L Engine(E36), Coupe(E36), Roadster 2.5L(E36), Roadster 2.8L(E36)
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BMW Z3 Throttle Body Compatible
Part Number: 13547502444
$475.31 MSRP: $603.62
You Save: $128.31 (22%)
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Product Specifications
- Other Name: Throttle Housing Assy; Throttle Body, Throttle Housing
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 2001-2002 BMW Z3 | Roadster 2.5L(E36)
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BMW Z3 Secondary Throttle Body
Part Number: 13541435710
$517.36 MSRP: $657.01
You Save: $139.65 (22%)
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Product Specifications
- Other Name: Secondary Throttle Housing Tube Asc; Throttle Body
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 1996-1998 BMW Z3 | 1.9L Engine(E36), Roadster 1.9L(E36), Roadster(E36)
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BMW Z3 Throttle Body
Part Number: 13547502445
$415.63 MSRP: $523.31
You Save: $107.68 (21%)
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Product Specifications
- Other Name: Throttle Housing Assy; Throttle Housing
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 2001-2002 BMW Z3 | Coupe(E36), Roadster 3.0L(E36)
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BMW Z3 Throttle Body
Part Number: 13541433385
$475.31 MSRP: $603.62
You Save: $128.31 (22%)
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Product Specifications
- Other Name: Throttle Housing Assy; Throttle Housing
- Replaces: 13-54-1-433-237, 13-54-1-427-174, 13-54-1-427-175
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 1997-2000 BMW Z3 | 2.8L Engine(E36), Roadster 2.8L(E36)
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BMW Z3 Throttle Body
Part Number: 13541247756
$698.93 MSRP: $874.74
You Save: $175.81 (21%)
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Product Specifications
- Other Name: Throttle Housing Assy; Idle Speed Control
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 1996-1998 BMW Z3 | 1.9L Engine(E36), Roadster 1.9L(E36), Roadster(E36)
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BMW Z3 Secondary Throttle Body
Part Number: 13541748840
$366.88 MSRP: $461.93
You Save: $95.05 (21%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Secondary Throttle Housing Tube Asc; Throttle Body, Throttle Housing
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 1997-2000 BMW Z3 | 2.8L Engine(E36), Roadster 2.8L(E36)

BMW Z3 Throttle Body

The BMW Z3 Throttle Body allows drivers to gain immediate control of engine acceleration by metering intake air into the engine, turning tiny pedal inputs into sharp bursts of acceleration. The butterfly plate's perfect pivot and the robust cast housing contribute to idle steady, revs smooth, and a power delivery that is as linear as they come. Any Z3 driver will reinforce BMW longevity. The electronic components, bolt pattern, and airflow specifications are the same between models, so this Throttle Body is good for every BMW Z3 from 1995 through 2002, including Roadster 2.5i, Roadster 3.0i, and Coupe 3.0i. The integrated position sensor provides angle information in real time to the ECU, enabling fuel and spark adjustment to enhance efficiency while satisfying the strict emissions limits set for the period. With factory tuning, BMW gives response curves that feel natural, so the car accelerates forward just as you'd expect but sips fuel when cruising. This is due to idle-air bypass within the Throttle Body in every Z3. The Throttle Body's heat-resistant alloys make it almost impervious to vibration while its shaft bearing is able to withstand the extreme temperatures inside the engine bay. This ensures that the Throttle Body maintains a tight seal to safeguard against long-term issues. A consistent pedal feel enhances safety, helping both new enthusiasts of the Z3 and seasoned owners to modulate their speed with confidence on wet pavement and in tight mountain roads. The Throttle Body as a single machined unit saves weight against other BMW hardware, which uses multi-part intakes, but still provides vacuum ports for emission controls or gauges. The BMW Z3 Throttle Body is reliable, efficient, and easy to install. This is one piece that keeps this classic roadster spirited, economical, and trustworthy mile after mile.

If you are looking for OEM BMW Z3 Throttle Body, we highly recommend to shop with us. Not only do we offer budget friendly prices, but we also provide fast delivery. In addition, we have a hassle-free return policy on all genuine BMW Z3 Throttle Body that come backed by the manufacturer's warranty.

BMW Z3 Throttle Body Parts Questions & Experts Answers

Secondary Throttle Body
13541435710
Q:
What is the purpose and process of the throttle body on BMW Z3?
Posted by Leah R.
A:
The throttle body of most BMW versions consist of the throttle plates that regulates the amount of air going towards the engine and typically connected to the accelerator pedal by cable, except for 5 Series models with traction control that use Electronic Motor Load regulation (EML) system. EML simply employs an electric servo motor to drive the throttle while a sensor on the accelerator pedal sends information about position of such a throttle to the EML controller from which it is relayed further down to a particular servo motor that will enable opening or shutting down of an approximate 90 degrees valve plate. In other words, EML does not need separate cruise control actuators, transmission control cables and throttle cables as all these functions are accomplished using only one multi-pin electrical connector into which the ECU connects with its counterpart on the TB. Nevertheless, it's important to note that any repairs related to the EML system require special BMW tool and should not be undertaken without access to this tool. The steps taken when removing and installing a throttle body depend on type of engine being worked on including draining coolant systems, disconnection of cables at different points such as hoses (which also serve as vacuum lines), removal of throttle bodies which involves cleaning mating surfaces, torquing mounting nuts among others. However, extra caution have to be taken when dealing with S14 engines in order adjust certain components and make sure gasket integrity is maintained appropriately. Basically speaking these procedures ensure correct operation of TBs as well as related parts in BMW vehicles.
Answered by BMW Parts Specialist Tony / May 19, 2025