Collection: Throttle Body Assembly

What Does a Throttle Body Do — and When Does It Fail?

The throttle body is the air intake component that regulates how much air enters the engine. On drive-by-wire (electronic throttle control) systems, a motorised plate responds to accelerator pedal position signals. On older drive-by-cable systems, the plate is connected directly to the accelerator cable. Either way, the throttle body is the primary control point for engine airflow — and its condition directly affects idle quality, throttle response, acceleration feel, and fuel efficiency.

Throttle body failure and carbon buildup are among the most common causes of rough idle, poor throttle response, hesitation on acceleration, and P0505–P0507 idle control fault codes. Before replacing the assembly, always attempt a thorough throttle body cleaning with appropriate throttle body cleaner and a soft brush — carbon buildup is responsible for the majority of throttle body complaints and costs nothing to address beyond the cleaner itself.

OEM vs. Aftermarket Throttle Body — Why OEM Matters

Budget aftermarket throttle bodies are widely available and significantly cheaper than OEM — but the bore diameter, plate geometry, and TPS calibration on an aftermarket unit are rarely identical to the original. Even minor deviations cause idle hunting, poor throttle tip-in response, and in some cases persistent fault codes that cannot be cleared because the ECU's learned throttle position values no longer match the new unit's output range.

A used OEM throttle body from a matching donor vehicle has the same bore dimensions, same plate geometry, and same TPS output curve as the unit it replaces. The ECU recognises it immediately and the throttle relearn procedure — where required — completes quickly and cleanly. At GreenGears Auto, used OEM throttle bodies cost 50–65% less than new OEM while preserving the factory calibration that aftermarket units cannot replicate.

Popular Throttle Body Applications We Stock

Toyota & Lexus Throttle Bodies

OEM throttle body assemblies for Toyota Tacoma, Tundra, Tundra 3.4L, Prius C (7th and 8th VIN B3), Camry, and Lexus platforms. Toyota's electronic throttle bodies require a throttle position relearn procedure after installation — this can be performed with a scan tool or via the specific key-on/key-off sequence in the factory service manual for each platform.

Nissan & Infiniti Throttle Bodies

Throttle body valve assemblies for Nissan Xterra, Frontier, and Pathfinder. Nissan throttle bodies are available in both standard manual transmission (with idle air control integrated differently) and automatic transmission configurations — always confirm transmission type when ordering.

Ford Throttle Bodies

Electronic throttle body assemblies for Ford Freestyle, Fusion, Escape, and Focus platforms. Ford's drive-by-wire throttle bodies require a PCM throttle relearn after installation — this is a straightforward procedure but must be completed before normal operation resumes. The Ford Freestyle Non-Water Cooled variant (6F9E-AB) is a specific part number — always match this exactly.

Mazda Throttle Bodies

Fuel injection throttle body valve housing assemblies for Mazda 3, 5, and 6 (2003–2007). Mazda's throttle bodies are closely related to Ford's Duratec-era units — confirm the OEM part number for an exact match on these platforms.

Mini Cooper Throttle Bodies

Fuel injection throttle body assemblies for Mini Cooper (2002–2008), with and without supercharged option. The non-supercharged and supercharged variants use different throttle body calibrations — always specify which configuration your vehicle has.

Mitsubishi & Suzuki Throttle Bodies

Throttle body assemblies for Mitsubishi Montero 3.8L V6 and Suzuki Forenza and SX4. These are among the most affordable used OEM throttle bodies available given the strong used market availability from these platforms.

Throttle Body Pricing vs. New OEM

Before You Order — Key Fitment Checks

• Confirm engine code, not just model: Throttle bodies are engine-specific. A Toyota Tacoma 4cyl and V6 use completely different units — always specify your engine size and code
• Manual vs. automatic transmission: Some platforms use different throttle body calibrations for manual and automatic transmission variants — always specify your transmission type
• Drive-by-wire vs. drive-by-cable: These are completely different assemblies. Electronic throttle bodies have a motor and TPS integrated into the unit; cable-operated units do not
• With vs. without specific options: Supercharged Mini Cooper, water-cooled vs. non-water-cooled Ford variants, and vehicles with traction control sometimes use different throttle body assemblies within the same model year
• OEM part number match: For the most precise fitment, note the part number stamped on your existing unit and provide it when ordering