Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSBMW1992735IREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCEAPPLICATIONENGINE/VIN IDIDENTIFICATION
1992 BMW 735i
Engine/VIN Id: Identification
1992 BMW 735iSECTION Identification
MODEL IDENTIFICATION
| Model | Body Code (1) | Engine | Enginevin Id | Fuel System (3) | Ignition System (4) | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 318i | AJ9 | 1.8L (M42) 4-Cyl. | (2) | Bosch Motronic (PFI) | DIS | ||||||||||||
| 318iC | BA7 | 1.8L (M42) 4-Cyl. | (2) | Bosch Motronic (PFI) | DIS | ||||||||||||
| 318is | AF9 | 1.8L (M42) 4-Cyl. | (2) | Bosch Motronic (PFI) | DIS | ||||||||||||
| 325i | AD1/AD2 (5) | 2.5L (M50) 6-Cyl. | (2) | Bosch Motronic (PFI) | DIS | ||||||||||||
| 325iC | BB1/BB2 (5) | 2.5L (M50) 6-Cyl. | (2) | Bosch Motronic (PFI) | DIS | ||||||||||||
| 325is | AA1/AA2 (5) | 2.5L (M50) 6-Cyl. | (2) | Bosch Motronic (PFI) | DIS | ||||||||||||
| 525i | HC1/HC2 (5) | 2.5L (M50) 6-Cyl. | (2) | Bosch Motronic (PFI) | DIS | ||||||||||||
| 535i | HD1/HD2 (5) | 3.5L (M30) 6-Cyl. | (2) | Bosch Motronic (PFI) | Magnetic | ||||||||||||
| 735i | GB3/GB4 (5) | 3.5L (M30) 6-Cyl. | (2) | Bosch Motronic (PFI) | Magnetic | ||||||||||||
| 735iL (6) | GB4 | 3.5L (M30) 6-Cyl. | (2) | Bosch Motronic (PFI) | Magnetic | ||||||||||||
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.