The Bosch Motorsport DBW 82mm electronic throttle body provides drive-by-wire throttle control for large-displacement gasoline engines. An 89 mm spigot OD flange with a 75×75 mm bolt pattern and M6×45 mm cap screws provides secure mounting to custom inlet manifolds. A DC motor drives the throttle plate; two inverse-tracking potentiometers (TPS1: 0→5 V fully closed to open; TPS2: 5→0 V closed to open) provide redundant position feedback to the ECU.
The dual-potentiometer design enables TPS fault detection: the ECU cross-checks TPS1 and TPS2 signals continuously, and any discrepancy beyond the allowed window flags a throttle position fault. A return spring closes the throttle plate if power is lost — the fail-safe condition required by all motorsport regulations where drive-by-wire is permitted.
Flex-fuel (E85), CNG, and LPG compatibility is permitted where the alternative fuel is injected downstream of the throttle body in the air path — the throttle body itself handles only air. The 82 mm bore suits engines up to approximately 6.0 L naturally aspirated, and boosted applications where manifold pressure management restricts mass flow through the throttle.
A 6-pin mating connector kit (D261.205.358-01) is the correct harness connector for this throttle body.
Technical Specifications
| Property | Value |
|---|---|
| SKU / Part number | 0280750101 (0 280 750 101) |
| Bore diameter | 82 mm |
| Mounting flange | 89 mm spigot OD |
| Bolt pattern | 75 × 75 mm, 4 × M6×45 mm cap screws |
| Actuation | DC motor |
| Position sensing | Dual potentiometer (TPS1 + TPS2, inverse tracking) |
| TPS1 output | 0 V (closed) → 5 V (open) |
| TPS2 output | 5 V (closed) → 0 V (open) |
| Sensor supply | 5 V |
| Motor supply voltage | 6 – 16 V |
| Connector | 6-pin Bosch (mating: D261.205.358-01) |
| Pinout | 1 = M−, 2 = Sensor GND (0V), 3 = Sensor supply (5V), 4 = M+, 5 = TPS2 (IP2), 6 = TPS1 (IP1) |
| Operating temperature | −40 to +140 °C |
| Fuel/medium compatibility | Air only at throttle (flex-fuel/CNG/LPG injected downstream) |
| Application guidance | Up to ~6.0 L NA |
ETC System Overview
A complete electronic throttle control (ETC) system requires:
1. This throttle body (actuator + dual position feedback)
2. An accelerator pedal position sensor (driver demand input to ECU)
3. An ETC-capable ECU (closed-loop DC motor control matching pedal to throttle position)
The Bosch Motorsport MS 6.2 EVO and MS 6.4 EVO include 2 × dedicated 8.5 A H-bridge outputs for electronic throttle control.
DBW Comparison
| Model | Bore | Bolt Pattern | Application Guidance | Product Page |
|---|---|---|---|---|
| DBW 60mm | 60 mm | — | Up to ~3–4 L NA | View |
| DBW 82mm | 82 mm | 75×75 mm | Up to ~6.0 L NA | — |
Related Products
- Bosch Motorsport DBW 60mm — smaller bore for moderate displacement
- MS 6.4 EVO ECU — 2 × ETC H-bridge outputs
- MS 7.4 ECU — integrated ETC control
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