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- Specification
- Description
🚗 Genuine Maruti Suzuki Brezza ECU — 33920-85S12 | Bosch MOTRONIC 0261S103CV
| Part Number | 33920-85S12 / 33920M85S12 |
| Bosch Hardware | 0 261 S10 3CV (0261S103CV) |
| Platform | MOTRONIC |
| Part Name | Controller Assembly EPI |
| Brand | Maruti Suzuki Genuine / Bosch |
| Origin | Made in India |
| $ | 125.00 |
| Dimensions | 20cm × 17cm × 7cm (L × W × H) |
| Weight | 397g |
| Condition | Brand New — Original Sealed |
| Quantity | 1 Piece |
✅ Compatible Vehicles (Official Maruti Data)
| Brand | Model | Variant | Engine | Year |
|---|---|---|---|---|
| Maruti Suzuki | Brezza | LXI MT | K15B | 2020–2022 |
| Maruti Suzuki | Brezza | VXI MT | K15B | 2020–2022 |
| Maruti Suzuki | Brezza | ZXI MT | K15B | 2020–2022 |
⚠️ CRITICAL: This ECU (33920M85S12) is specifically for Maruti Suzuki Brezza K15B MT models (2020–2022). Similar part numbers exist (33920M85S21) with different calibrations. Verify EXACT part number match with your old ECU before purchase. Wrong fitment will NOT work.
🔧 What Is This Part?
The Engine Control Unit (ECU) — Part No. 33920-85S12 (33920M85S12) — is the brain of your Maruti Suzuki Brezza K15B engine. Manufactured by Bosch with MOTRONIC platform 0261S103CV, this ECU controls fuel injection, ignition timing, idle control, and emissions. Made in India.
Primary Application: Maruti Suzuki Brezza LXI/VXI/ZXI MT (2020–2022) with K15B engine.
⚠️ Faulty ECU Symptoms
- 🔴 Check Engine Light ON — Persistent CEL
- 🔄 Engine Misfiring / Rough Idle
- 🐢 Poor Acceleration & Power Loss
- ⛽ Decreased Fuel Efficiency
- 🔇 Engine Stalling / Hard Starting
🛠️ Important: Programming Required
⚠️ WARNING: This ECU requires immobilizer programming and key matching at an authorized Maruti Suzuki service center. Without programming, the car will NOT start. Professional installation is mandatory.
📦 What's Included
- 1 x Genuine Maruti Suzuki ECU (33920-85S12 / 33920M85S12)
- Original sealed packaging
- Barcode verification sticker
🚫 No Warranty / Return After Fitting Policy
⚠️ IMPORTANT:
- No warranty after fitting: Electronic component — once installed, no return or warranty claim accepted.
- DOA only: Warranty valid only for Dead on Arrival — defective BEFORE fitting.
- Test before fitting: Get it tested by a professional technician before installation.
- Verify compatibility: Check VIN and old ECU part number match before purchase.
🌟 Product Highlights
- ✅ Genuine Maruti Suzuki / Bosch ECU — Not a clone
- ✅ Direct Replacement — Same as factory fitted
- ✅ Restores Engine Performance — Smooth idle & power
- ✅ MOTRONIC Platform — Proven Bosch reliability
- ✅ Made in India — Original OEM quality
🌍 Worldwide Shipping
We ship all over the world via DHL, FedEx, and Aramex. Secure packaging with tracking number provided.
Maruti Suzuki Brezza ECU, 33920-85S12, 33920M85S12, Bosch MOTRONIC, 0261S103CV, Controller Assembly EPI, Brezza K15B, Brezza LXI MT, Brezza VXI MT, Brezza ZXI MT, Engine Control Module, Made in India