CSF 3717 OE Replacement Radiator for BMW 335i/135i/X1/Z4 (Auto) E82/E88/E90/E92

Vehicle Fitment

• 2008-2013 BMW 135i (E82/E88) - 3.0L N54 / N55 - Automatic Transmission
• 2007-2011 BMW 335i (E90) Sedan - 3.0L N54 / N55 - Automatic Transmission
• 2007-2008 BMW 335xi (E90) Sedan - 3.0L N54 - Automatic Transmission
• 2009-2011 BMW 335i xDrive (E90) Sedan - 3.0L N54 / N55 - Automatic Transmission
• 2007-2013 BMW 335i (E92) Coupe - 3.0L N54 / N55 - Automatic Transmission
• 2011-2013 BMW 335is (E92) Coupe - 3.0L N54 - Automatic Transmission
• 2008 BMW 335xi (E92) Coupe - 3.0L N54 - Automatic Transmission
• 2007-2013 BMW 335i (E93) Convertible - 3.0L N54 / N55 - Automatic Transmission
• 2011-2013 BMW 335is (E93) Convertible - 3.0L N54 - Automatic Transmission
• 2012-2015 BMW X1 sDrive28i / xDrive28i (E84) - 2.0L N20 - Automatic Transmission
• 2013-2015 BMW X1 xDrive35i (E84) - 3.0L N55 - Automatic Transmission
• 2009-2016 BMW Z4 sDrive30i (E89) - 3.0L N52 - Automatic Transmission
• 2009-2016 BMW Z4 sDrive35i (E89) - 3.0L N54 / N55 - Automatic Transmission
• 2009-2016 BMW Z4 sDrive35is (E89) - 3.0L N54 - Automatic Transmission

Fitment Notes

• Automatic transmission vehicles ONLY -- does NOT fit manual transmission
• For manual transmission models, order CSF 3716 instead
• OE-style plastic tank / aluminum core design -- not all-aluminum
• Quick-connect style inlet and outlet connections -- matches OE fittings
• Includes cooling system control sleeve (drain plug)
• Does NOT include integrated transmission oil cooler
• Direct drop-in replacement -- uses all factory shrouding, hoses, and mounting points
• Does NOT fit 128i, 325i, 328i, or 330i -- those use CSF 3718
• OE part number cross-reference: 17117547059, 17117558480

Features

• CSF OE-style replacement radiator -- direct-fit drop-in design
• Aluminum core with plastic end tanks -- matches OE construction
• Crossflow radiator configuration
• High-performance multi-louvered fin design for maximum surface area
• 100% individually leak tested at 150% of operating pressure before shipping
• Vibration-cycle tested for long-term durability
• Thermal-cycle tested for consistent performance under heat stress
• Wind tunnel tested for cooling performance validation
• Industry-leading packaging with 10-foot drop test standard
• CNC machined quick-connect inlet and outlet fittings

Specifications

• Part number: CSF 3717
• Type: OE-style replacement radiator
• Radiator style: Crossflow
• Core material: Aluminum
• Tank material: Plastic
• Inlet location: Upper driver side (quick-connect)
• Outlet location: Lower passenger side (quick-connect)
• Integrated transmission cooler: No
• Transmission type: Automatic only
• OE cross-reference: 17117547059, 17117558480
• UPC: 710353037171
• Warranty: 2 years (original purchaser, original vehicle)
• Sold individually

Included Components

• Radiator (1)
• Cooling system control sleeve / drain plug (1)

Product Description

The CSF 3717 is an OE-style replacement radiator designed for automatic transmission BMW models equipped with the N54, N55, N52, and N20 engines, including the E82/E88 135i, E90/E92/E93 335i and 335is, E84 X1, and E89 Z4. This direct drop-in radiator matches the factory aluminum core and plastic tank construction with all OE connection points, mounting locations, and quick-connect inlet and outlet fittings for straightforward installation using the existing shrouding, hoses, and brackets. The aluminum core features CSF's high-performance multi-louvered fin design that maximizes surface area contact for efficient heat dissipation. Every unit is individually leak tested at 150% of operating pressure and undergoes vibration-cycle, thermal-cycle, and wind tunnel testing before leaving the factory. A cooling system control sleeve is included for the drain port. This radiator is specifically designed for automatic transmission applications and does not fit manual transmission vehicles -- order CSF 3716 for manual trans. CSF has manufactured over 30 million cooling products across ISO-certified facilities and is an OE supplier to multiple automotive manufacturers worldwide.