OVERVIEW
CSF's all-aluminum high-performance radiator for the E8X/E9X N54 and N55 platform replaces the factory plastic-tank radiator with a 2-row, 42mm dual core built around CSF's exclusive B-Tube technology. The core carries an ultra-efficient multi-louvered fin with a 6.5mm fin height for maximum surface area contact.
Every connection point is engineered for the platform: CNC-machined "quick-connect" inlet and outlet fittings, CNC-machined brackets for fit and durability, and an all-aluminum race-style drain plug in place of the fragile factory item. The radiator is finished with a 1-hour hand-polished mirror finish.
Fitment is a true "drop-in": the radiator accepts every attaching OEM component, including the quick-connect hoses, the A/C condenser, the mounting brackets and the fan shroud, so no modification is required to install it.
SPECS
- 2-row, 42mm dual core featuring CSF's exclusive B-Tube technology
- Ultra-efficient multi-louvered fin with 6.5mm fin height
- Seam-brazed B-Tube construction
- CNC-machined "quick-connect" inlet and outlet connections
- CNC-machined brackets and fittings
- All-aluminum race-style drain plug
- All-aluminum construction
- 1-hour "mirror finish" hand polish; smooth satin finish
- "Drop-in fit" — accepts all attaching OEM components including quick-connect hoses, A/C condenser, mounting brackets and fan shroud
- OEM cross-reference: BMW 17117558480 (#7045, manual) / BMW 17117547059 (#7046, automatic)
- 2-year limited warranty
PARTS INCLUDED
- CSF all-aluminum high-performance radiator
- CNC-machined brackets and quick-connect fittings
- All-aluminum race-style drain plug
TECH RESOURCES
Additional Parts Required
- None. CSF specifies no additional hardware for this part — the radiator accepts every attaching OEM component and requires no modification to install.
- Coolant for refilling and bleeding the cooling system after installation (installer supplied).
Installation
- CSF does not publish a downloadable installation PDF for this part. Printed installation instructions are supplied in the box.
- Installation requires no modification; the radiator reuses the OEM quick-connect hoses, A/C condenser, mounting brackets and fan shroud.
Notes
- Two versions available — select the correct part for your transmission: CSF #7045 for manual transmission cars, CSF #7046 for automatic and dual-clutch cars.
- Fitment and year ranges follow CSF's current published application tables for #7045 and #7046. CSF lists the 3-Series applications as "E9X 335i", expanded here into the individual E90/E91/E92/E93 body codes; CSF does not separately list 335xi/335i xDrive or the additional N20 X1 and Z4 variants that appeared in the previous store copy, so confirm those applications, and your transmission type, with Speed Logic before ordering.
PART NUMBER
- 7045 — manual transmission (MT) applications
- 7046 — automatic and dual-clutch (AT/DCT) applications
VEHICLE APPLICATIONS
| Make / Model | Chassis | Engine | Years |
|---|---|---|---|
| BMW 1 Series M Coupe (manual — #7045) | E82 | N54 3.0L Twin-Turbo I6 | 2011 |
| BMW 135i Coupe (#7045 manual / #7046 automatic) | E82 | N54 / N55 3.0L Turbo I6 | 2008–2013 |
| BMW 135i Convertible (#7045 manual / #7046 automatic) | E88 | N54 / N55 3.0L Turbo I6 | 2008–2013 |
| BMW 135is (#7045 manual / #7046 DCT) | E82 / E88 | N55 3.0L Turbo I6 | 2013 |
| BMW 335i Sedan (#7045 manual / #7046 automatic) | E90 | N54 / N55 3.0L Turbo I6 | 2007–2013 |
| BMW 335i Touring (#7045 manual / #7046 automatic) | E91 | N54 / N55 3.0L Turbo I6 | 2007–2013 |
| BMW 335i Coupe (#7045 manual / #7046 automatic) | E92 | N54 / N55 3.0L Turbo I6 | 2007–2013 |
| BMW 335i Convertible (#7045 manual / #7046 automatic) | E93 | N54 / N55 3.0L Turbo I6 | 2007–2013 |
| BMW X1 xDrive28i (automatic — #7046) | E84 | N20 2.0L Turbo I4 | 2013–2015 |
| BMW Z4 sDrive28i (#7045 manual / #7046 automatic) | E89 | N20 2.0L Turbo I4 | 2012–2016 |
| BMW Z4 sDrive35i (#7045 manual / #7046 DCT) | E89 | N54 3.0L Twin-Turbo I6 | 2009–2016 |