Genuine Suzuki Swift/Dzire ECU 33920-55RD0

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Specification
Description
Compatibility
Warranty

🚗 Genuine Suzuki Swift/Dzire ECU — 33920-55RD0

This is a genuine OEM Maruti Suzuki Engine Control Unit (ECU/ECM) with part number 33920-55RD0 (also listed as 33920M55RD0), manufactured by Bosch India under the MOTRONIC engine management system. Specifically designed for the 2022+ Maruti Suzuki Swift (3rd Gen) and Swift Dzire (3rd Gen) powered by the advanced K12C 1.2L Dual-Jet petrol engine.

🔑 Key Identifiers
OEM Part No: 33920-55RD0	Barcode No: 33920M55RD0
Bosch No: 0 261 S17 799	Bosch Serial: 4740006622 0181 7963
Mfg Date: 25-03-27	System: MOTRONIC
Origin: Made in India 🇮🇳	Code: MF 666PA

📋 Technical Specifications

Specification	Details
Part Type	Engine Control Unit / ECM / ECU
OEM Part Number	33920-55RD0
Alternate Numbers	33920M55RD0, MF 33920-55RD0, 068PA, 666PA
Bosch Part Number	0 261 S17 799
Bosch Serial Number	4740006622 0181 7963
Manufacturing Date	25-03-27
Engine Management System	Bosch MOTRONIC
Country of Manufacture	India 🇮🇳
Compatible Engine	K12C 1.2L Dual-Jet Petrol
Fuel System	Dual-Jet Multi-point Injection (MPI)
Condition	✓ Genuine OEM / New

✅ Guaranteed Genuine: This is a 100% original Maruti Suzuki part manufactured by Bosch. Not aftermarket, not refurbished — pure OEM quality with full compatibility assurance. Verified via official Maruti Suzuki parts catalog and YouTube reference video.

📝 Product Description

The Maruti Suzuki Swift/Dzire ECU 33920-55RD0 is the central brain of your vehicle's engine management system. Manufactured by Bosch India using their renowned MOTRONIC technology, this ECM ensures optimal fuel delivery, ignition timing, and emission control for the K12C 1.2L Dual-Jet engine powering the 2022+ Maruti Suzuki Swift (3rd Generation) and Swift Dzire (3rd Generation) sedans.

⚡ What Does This ECM Control?
⛽ Dual-Jet Fuel Injection Two injectors per cylinder for better efficiency	⚡ Ignition Timing Optimal spark timing for performance
🌡️ Idle Control Stable idle speed under all conditions	🌿 Emissions Control Meets BS6 Phase 2 / RDE standards
🔧 VVT Control Variable valve timing management	📡 CAN Bus Communication Links with ABS, ESP, BCM modules

🔍 How to Verify This Part

Check the white label on the aluminum casing for these exact markings:

BOSCH 0 261 S17 799 (176)

4740006622 0181 7963

25-03-27 MOTRONIC

MF 33920-55RD0 666PA

Made in India

⚠️ Common Symptoms of Faulty ECM

Symptom	Possible Cause
🚫 Engine cranks but won't start	ECM not sending fuel/ignition signals
💡 Check Engine Light stays ON	Internal ECM fault or corrupted data
⛽ Poor fuel economy	Incorrect fuel mapping in ECM
🔧 Rough idling or stalling	Idle control circuit failure
📱 No OBD communication	ECM internal failure or damaged CAN bus
🔥 Engine misfires	Incorrect ignition timing from ECM

💡 Pro Tip: Always verify the Bosch serial number (4740006622) and manufacturing date (25-03-27) before purchasing. Counterfeit ECMs often have mismatched or missing Bosch markings. The "MF" prefix code confirms this is a Swift/Dzire-specific India-made unit. This ECU requires dealer-level programming or immobilizer matching after installation.

🚘 Vehicle Compatibility

This ECU is specifically programmed for the K12C 1.2L Dual-Jet engine with advanced Dual-Jet Multi-point Injection. Below is the complete compatibility chart for the 2022+ Maruti Suzuki Swift and Dzire:

Brand	Model	Variant	Engine	Year Range	Transmission
Maruti Suzuki	Swift (3rd Gen)	LXi / VXi / ZXi / ZXi+	K12C 1.2L Dual-Jet	2022 – Present	5-Speed MT / AMT
Maruti Suzuki	Swift Dzire (3rd Gen)	LXi / VXi / ZXi / ZXi+	K12C 1.2L Dual-Jet	2022 – Present	5-Speed MT / AMT
Maruti Suzuki	Swift (3rd Gen)	CNG (S-CNG)	K12C 1.2L Dual-Jet	2022 – Present	5-Speed MT
Maruti Suzuki	Swift Dzire (3rd Gen)	CNG (S-CNG)	K12C 1.2L Dual-Jet	2022 – Present	5-Speed MT

🔧 K12C Dual-Jet Engine Specifications

Specification	Value
Engine Code	K12C
Displacement	1,197 cc (1.2L)
Cylinders	4, Inline
Valves	16 (4 per cylinder)
Bore × Stroke	73.0 mm × 71.5 mm
Compression Ratio	12.0:1
Max Power	90 PS @ 6,000 rpm
Max Torque	113 Nm @ 4,400 rpm
Fuel System	Dual-Jet Multi-point Injection (MPI)
Valvetrain	Dual VVT (Variable Valve Timing)
Emission Standard	BS6 Phase 2 / RDE Ready

⚠️ Important: This ECM is NOT compatible with older Swift/Dzire (2010–2021) K12B/K12M engines, K10C 1.0L, or Diesel engines. Always match your engine code before ordering. The 33920-55RD0 is specific to 2022+ K12C Dual-Jet petrol and S-CNG variants only.

📊 Related OEM Part Numbers

Part Number	Vehicle Application	Engine
33920-55RD0	Swift/Dzire 1.2L (2022+)	K12C Dual-Jet
33920M55RD0	Swift/Dzire Barcode Format	K12C
33920-55R01	Dzire Diesel (Old Model)	D13A
33920-55R00	Swift K12B (2010–2021)	K12B

🛡️ Warranty & Return Policy

🛡️

6 Months Warranty

Full replacement guarantee against manufacturing defects

↩️

30-Day Return

Hassle-free return if part doesn't match your vehicle

✅

Tested Before Shipping

Every unit verified on OEM test bench

🚚

Worldwide Shipping

Express delivery with tracking number

❌ Warranty Void Conditions: Physical damage, water ingress, improper installation, or ECU reprogramming by unauthorized technicians will void warranty. Professional installation recommended. Always verify VIN and engine code before installation. This ECM requires dealer-level programming or immobilizer matching for 2022+ Swift/Dzire models.

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Genuine Suzuki Swift/Dzire ECU 33920-55RD0 | 33920M55RD0

🚗 Genuine Suzuki Swift/Dzire ECU — 33920-55RD0