2004-2010 BMW 545i/550i/645Ci/650i Radiator Coolant Hose / Line 64216921428
OEM Part #: 64-21-6-921-428 (64216921428)
Actual photo
The exact part you’ll receive — not a stock photo.
$16.99
Used
Donor2006 BMW 650i · 4.8L
✓ Free Same Day Shipping on orders by noon CT
Only 1 in stock — no guaranteed restock
Genuine OEM Used
SKU: 670240
Donor Vehicle: 2006 BMW 650i · 4.8L
2 photos
$16.99
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 is a used genuine BMW radiator coolant hose / line, OEM part number 6921428. It serves as the factory coolant passage between the radiator and engine block, routing hot coolant for return and cooling. A common failure on these hoses is cracking or splitting at the molded bends, leading to visible coolant leaks and potential overheating.
Specifications
| Fits Vehicle Model | 545i, 550i, 645Ci, 650i |
| Fits Vehicle Make | BMW |
| OEM Part No | 64-21-6-921-428 (64216921428) |
| Category | Radiator / Coolant |
Compatible Vehicles
Fits 21 vehicle configurations across 1 make, 2004-2010.
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 21 vehicle configurations — 21 with fitment notes
| Year | Make | Model | Trim | Engine | Note |
|---|---|---|---|---|---|
| 2005 | BMW | 645Ci | Coupe | 4.4L V8 | For vehicles WITH option code S534A; For vehicles WITHOUT option code S536A |
| 2004 | BMW | 645Ci | Coupe | 4.4L V8 | For vehicles WITH option code S534A; For vehicles WITHOUT option code S536A |
| 2007 | BMW | 650i | Coupe | 4.8L V8 | For vehicles WITH option code S534A; For vehicles WITHOUT option code S536A |
| 2006 | BMW | 650i | Coupe | 4.8L V8 | For vehicles WITH option code S534A; For vehicles WITHOUT option code S536A |
| 2010 | BMW | 550i | Sedan | 4.8L V8 | For vehicles WITHOUT option codes S534A AND S536A |
| 2010 | BMW | 650i | Coupe | 4.8L V8 | For vehicles WITH option code S534A; For vehicles WITHOUT option code S536A |
| 2009 | BMW | 650i | Coupe | 4.8L V8 | For vehicles WITH option code S534A; For vehicles WITHOUT option code S536A |
| 2005 | BMW | 645Ci | Convertible | 4.4L V8 | For vehicles WITH option code S534A; For vehicles WITHOUT option code S536A |
| 2004 | BMW | 645Ci | Convertible | 4.4L V8 | For vehicles WITH option code S534A; For vehicles WITHOUT option code S536A |
| 2006 | BMW | 650i | Convertible | 4.8L V8 | For vehicles WITH option code S534A; For vehicles WITHOUT option code S536A |
| 2007 | BMW | 650i | Convertible | 4.8L V8 | For vehicles WITH option code S534A; For vehicles WITHOUT option code S536A |
| 2008 | BMW | 650i | Convertible | 4.8L V8 | For vehicles WITH option code S534A; For vehicles WITHOUT option code S536A |
| 2008 | BMW | 650i | Coupe | 4.8L V8 | For vehicles WITH option code S534A; For vehicles WITHOUT option code S536A |
| 2009 | BMW | 550i | Sedan | 4.8L V8 | For vehicles WITHOUT option codes S534A AND S536A |
| 2009 | BMW | 650i | Convertible | 4.8L V8 | For vehicles WITH option code S534A; For vehicles WITHOUT option code S536A |
| 2008 | BMW | 550i | Sedan | 4.8L V8 | For vehicles WITHOUT option codes S534A AND S536A |
| 2004 | BMW | 545i | Sedan | 4.4L V8 | For vehicles WITHOUT option codes S534A AND S536A |
| 2005 | BMW | 545i | Sedan | 4.4L V8 | For vehicles WITHOUT option codes S534A AND S536A |
| 2007 | BMW | 550i | Sedan | 4.8L V8 | For vehicles WITHOUT option codes S534A AND S536A |
| 2006 | BMW | 550i | Sedan | 4.8L V8 | For vehicles WITHOUT option codes S534A AND S536A |
| 2010 | BMW | 650i | Convertible | 4.8L V8 | For vehicles WITH option code S534A; For vehicles WITHOUT option code S536A |