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Details
| Specification | Value |
|---|---|
| Brand | BBT |
| MPN | 17-388 |
| Category | Coil plug |
| Connector type | M4 |
| Length [mm] | 116 mm |
| Resistor [kOhm] | 2 kOhm |
OE/OEM numbers (3)
Search by this OE number to find compatible parts
- BMW—12 12 1 730 521
- BMW—12 13 1 730 521
- BMW—12 13 9 067 831
Where this part fits
Original-fit position for OE 12131730521. The red ring marks where this part installs on the vehicle.

About this product
BBT Coil plug (17-388) is manufactured to OEM tolerances, ensuring a direct-fit replacement that restores your vehicle to factory specification without any modification. Technical specifications — Connector type: M4, Length [mm]: 116 mm, Spark Plug: 0, Resistor [kOhm]: Aluminium kOhm — are verified against the OEM data sheet to guarantee fitment accuracy and performance parity with the original equipment. This part supersedes original equipment references: 12 12 1 730 521, 12 13 1 730 521, 12 13 9 067 831, 1354489085 and 2 more. Matching these numbers confirms a like-for-like replacement with no loss of function. BBT is a recognised supplier of automotive ignition 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 from our UK warehouse with a 30-day money-back guarantee and free hassle-free returns.
Suitable cars
Vehicle matches are curated from manufacturer data
Confirmed fits based on manufacturer data.Equivalent products (3)
Coil plug BBT 17-388 — compatible car models
| Manufacturer article number (MPN) | 17-388 |
|---|---|
| OE part numbers | 12 12 1 730 521, 12 13 1 730 521, 12 13 9 067 831 |
Compatibility check
Loading vehicle data…
Please wait while we load vehicle compatibility information.Description and what's included
BBT 17-388 Coil plug. Connector type: M4. Length [mm]: 116 mm. Resistor [kOhm]: 2 kOhm. Spark Plug: 0
- 1x Coil plug
Shipping, returns, warranty
Free UK delivery on orders over £99.00. Express and standard shipping available.
- Standard delivery: 2-5 business days
- Express delivery: 1-2 business days
- 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 Coil plug compatible with my car?
Use the vehicle selector at the top of the page to check compatibility. Enter your car's make, model, and engine — we'll confirm whether this Coil plug fits. All fitment data is verified through TecDoc.
What specifications does this BBT Coil plug have?
This BBT Coil plug has the following specifications: Connector type: M4; Length [mm]: 116 mm; Spark Plug: 0; Resistor [kOhm]: 2 kOhm. Check the full specifications table above for complete details.
What OE part numbers does this Coil plug replace?
This Coil plug replaces OE part numbers: 12 12 1 730 521, 12 13 1 730 521, 12 13 9 067 831. Cross-reference these numbers with your vehicle's original part number to confirm compatibility.
How much does a Coil plug cost?
Coil plug prices vary depending on brand, specifications, and vehicle compatibility. Check the current price above for this BBT Coil plug. All parts come with our 14-day money-back guarantee.
How do I know when to replace my Coil plug?
Regular inspection of your Coil plug is recommended as part of routine vehicle maintenance. Watch for changes in performance, unusual noises, or visual signs of wear. Consult your vehicle's owner manual for manufacturer-recommended replacement intervals specific to your make and model.
What tools do I need to replace a Coil plug?
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 Coil plug fitted by a professional mechanic.
Can I use this part as a replacement for OE 12 12 1 730 521?
Yes, this BBT Coil plug is a direct replacement for OE part number 12 12 1 730 521. It is manufactured to meet or exceed original equipment specifications, ensuring proper fitment and performance. All cross-reference data is verified through TecDoc.