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Details
| Specification | Value |
|---|---|
| Brand | BREMI |
| Voltage [V] | 12 V |
| Number of pins | 4 -pin connector |
OE numbers (4)
Search by this OE number to find compatible parts
- BMW—13 62 1 703 275
- BMW—13 62 1 707 650
- BMW—1 703 275
- BMW—1 707 650
Where this part fits
Original-fit position for OE 13621707650. The red ring marks where this part installs on the vehicle.
About this product
The BREMI Mass Air Flow Sensor (30121) is a professional-grade replacement component engineered for long service life and reliable operation across all conditions your vehicle encounters. The part is built to the following specification: Voltage [V]: Zinc V, Number of pins: Copper -pin connector. Each dimension is checked against the OEM reference to ensure the component seats and functions correctly first time. Verified to fit BMW models. All compatibility data is cross-checked against the TecDoc database — select your vehicle to confirm the part matches your specific engine and year. This part supersedes original equipment references: 04394, 07SKV115, 13 62 1 703 275, 13 62 1 707 650 and 70 more. Matching these numbers confirms a like-for-like replacement with no loss of function. BREMI is a recognised supplier of automotive replacement components to independent workshops and dealer networks across Europe. All parts are sourced from authorised distribution channels and carry full manufacturer traceability — you receive exactly the same component supplied to professional garages and dealer workshops. If fitment or specifications do not match your vehicle, our technical team can help identify the correct alternative — use the vehicle selector or contact us with your VIN for a guaranteed-fit recommendation. Replacing worn components on schedule preserves your vehicle's safety, reliability, and resale value — and aftermarket parts from established brands deliver OEM-equivalent performance at a fraction of the dealer price. Every part is dispatched with tracked delivery and a 14-day money-back guarantee with hassle-free returns.
Suitable cars
Equivalent products (73)
Show all 73 OE numbers
Mass Air Flow Sensor BREMI 30121 — compatible car models
| Car models | BMW: 3 Compact (E36), 3 Convertible (E36), 3 Coupe (E36), 3 (E36), 3 Touring (E36), 5 (E39), 5 Touring (E39), 7 (E38), Z3 Coupe (E36), Z3 Roadster (E36) |
|---|---|
| Engines | 323 ti; 323 i; 523 i; 728 i, iL; 2.8 i |
| Year of manufacture | 1990-2004 |
| Manufacturer article number (MPN) | 30121 |
| OE part numbers | 13 62 1 703 275, 13 62 1 707 650, 1 703 275, 1 707 650 |
Compatibility check
Loading vehicle data…
Please wait while we load vehicle compatibility information.Description and what's included
BREMI 30121 . Number of pins: 4 -pin connector. Voltage [V]: 12 V
- 1x Mass Air Flow Sensor
Shipping, returns, warranty
Free UK delivery on orders over £99.00. Tracked standard shipping.
- Standard delivery: 4–8 business days
- Order before 5pm — ships the next working day
- Free returns within 14 days
- All parts backed by manufacturer warranty
Warranty: 12-month manufacturer warranty on all parts. 14-day money-back guarantee if the part doesn't fit your vehicle.
Frequently Asked Questions
Is this Mass Air Flow Sensor compatible with my car?
This Mass Air Flow Sensor fits BMW vehicles. Use the vehicle selector at the top of the page to check exact compatibility — enter your car's make, model, and engine for a confirmed fitment match. All fitment data is verified through TecDoc.
What specifications does this BREMI Mass Air Flow Sensor have?
This BREMI Mass Air Flow Sensor has the following specifications: Voltage [V]: 12 V; Number of pins: 4 -pin connector. Check the full specifications table above for complete details.
What OE part numbers does this Mass Air Flow Sensor replace?
This Mass Air Flow Sensor replaces OE part numbers: 13 62 1 703 275, 13 62 1 707 650, 1 703 275, 1 707 650. Cross-reference these numbers with your vehicle's original part number to confirm compatibility.
How much does a Mass Air Flow Sensor cost?
This BREMI Mass Air Flow Sensor is available for £65.99. Mass Air Flow Sensor prices vary depending on brand, specifications, and vehicle compatibility. BREMI parts offer a balance of quality and value, backed by our 14-day money-back guarantee.
How do I know when to replace my Mass Air Flow Sensor?
Signs include a check engine light with mass airflow codes, rough or unstable idle, black smoke and over-fuelling, engine hesitation during acceleration, or difficulty starting. Clean the sensor first — replacement may not always be needed.
What tools do I need to replace a Mass Air Flow Sensor?
Tools required vary by vehicle make and model. Generally, a basic socket set, screwdrivers, and vehicle-specific tools may be needed. We recommend consulting a workshop manual for your specific vehicle, or having the Mass Air Flow Sensor fitted by a professional mechanic.
Can I use this part as a replacement for OE 13 62 1 703 275?
Yes, this BREMI Mass Air Flow Sensor is a direct replacement for OE part number 13 62 1 703 275. It is manufactured to meet or exceed original equipment specifications, ensuring proper fitment and performance. All cross-reference data is verified through TecDoc.
Is the BREMI 30121 the same as the BREMI 30001?
No, while both are Mass Air Flow Sensor parts, they are different products. The BREMI 30121 has Voltage [V]: 12 V, Number of pins: 4 -pin connector. The BREMI 30001 may differ in dimensions, fitting position, or material composition. Always verify compatibility with your specific vehicle using our vehicle selector, or contact our customer service team for assistance.
Related categories
Common OE numbers for this part
Common original equipment numbers linked to stocked alternatives.
