2015-2021 BMW M2/M3/M4 Radiator Coolant Hose / Line (RETURN) 64219307242
OEM Part #: 64-21-9-307-242 (64219307242)
Actual photo
The exact part you’ll receive — not a stock photo.
$13.71
Used
Donor2018 BMW M3 · 3.0L
✓ Free Same Day Shipping on orders by noon CT
Only 2 in stock — no guaranteed restock
Genuine OEM Used
SKU: 515688
Donor Vehicle: 2018 BMW M3 · 3.0L
2 photos
$13.71
30-Day Returns
Genuine OEM Used
SKU: 538706
Donor Vehicle: 2018 BMW M4 · 3.0L · 50k miles
2 photos
$13.71
30-Day Returns
- Genuine OEM — real photos
- 30-day returns on eligible parts
- eBay Top Rated · 100,000+ positive ratings
- Ships from our own indoor warehouse
This used OEM BMW radiator coolant hose (part 9307242) is the return line that carries coolant from the radiator back to the engine. Designed for the 3.0L turbocharged I6 found in M2, M3, and M4 models, this hose often fails by developing cracks or pinhole leaks at the connection points, leading to visible coolant drips and potential overheating. As a genuine factory line, it ensures proper flow and hose-end sealing.
Specifications
| Fits Vehicle Model | M2, M3, M4 |
| Fits Vehicle Make | BMW |
| OEM Part No | 64-21-9-307-242 (64219307242) |
| Category | Radiator / Coolant |
Compatible Vehicles
Fits 20 vehicle configurations across 1 make, 2015-2021.
Check your specific vehicle before ordering.
This list shows year, make, and model. Some years have multiple trims or
engines that use different parts, and individual listings may have
additional fitment notes (e.g. “with sunroof only”). Review
the full variant list below, or
message us with your VIN
and we’ll confirm the match.
View all 20 vehicle configurations
| Year | Make | Model | Trim | Engine | Note |
|---|---|---|---|---|---|
| 2021 | BMW | M2 | Coupe | 3.0L l6 Turbo | |
| 2020 | BMW | M2 | Coupe | 3.0L l6 Turbo | |
| 2019 | BMW | M2 | Coupe | 3.0L l6 Turbo | |
| 2016 | BMW | M4 | GTS Coupe | 3.0L l6 Turbo | |
| 2019 | BMW | M4 | Coupe | 3.0L l6 Turbo | |
| 2020 | BMW | M4 | Coupe | 3.0L l6 Turbo | |
| 2017 | BMW | M4 | Convertible | 3.0L l6 Turbo | |
| 2016 | BMW | M4 | Convertible | 3.0L l6 Turbo | |
| 2019 | BMW | M4 | Convertible | 3.0L l6 Turbo | |
| 2015 | BMW | M4 | Convertible | 3.0L l6 Turbo | |
| 2018 | BMW | M4 | Coupe | 3.0L l6 Turbo | |
| 2020 | BMW | M4 | Convertible | 3.0L l6 Turbo | |
| 2015 | BMW | M4 | Coupe | 3.0L l6 Turbo | |
| 2018 | BMW | M4 | Convertible | 3.0L l6 Turbo | |
| 2016 | BMW | M4 | Coupe | 3.0L l6 Turbo | |
| 2018 | BMW | M3 | Sedan | 3.0L l6 Turbo | |
| 2016 | BMW | M3 | Sedan | 3.0L l6 Turbo | |
| 2017 | BMW | M3 | Sedan | 3.0L l6 Turbo | |
| 2015 | BMW | M3 | Sedan | 3.0L l6 Turbo | |
| 2017 | BMW | M4 | Coupe | 3.0L l6 Turbo |