The
Duratec 37 is a version of the Cyclone V6 intended to power heavier or premium vehicles. The 3.7 L's additional displacement comes from an increase in bore diameter to , stroke remains identical to the 3.5 L at . Ford Power Products sells this engine as the CSG-637 for industrial uses starting in mid-2015, which replaced the 4.2 L Essex and is manufactured under license by Engine Distributors Inc. A
Hiroshima,
Japan-assembled Mazda MZI 3.7 was installed in the 2008
Mazda CX-9 and was the first 3.7 L Cyclone V6 to see production. The first Ford application of the 3.7 L was the 2009
Lincoln MKS. A few days before the 2009
Los Angeles International Auto Show, Ford unveiled a new version of the 3.7 L for the 2011 Mustang, making it the first Duratec-badged V6 since the
Lincoln LS to be used in a production rear-wheel drive car. Due to packaging differences in transverse applications, the water pump was relocated to the valley behind the timing cover and is driven by the timing chain. This version of the features twin independent
variable cam timing (Ti-VCT), delivers highway mileage in the Mustang, and was the first production engine to deliver in excess of
and .
Applications Water pump issues Water pumps on transversely mounted 3.5 L V6, 3.5 L EcoBoost V6, and 3.7 L V6 engines have a tendency to fail and potentially ruin the engine when they do. The water pumps on these engines are internally mounted and driven by the timing chain. As a result, when they fail, antifreeze is dumped directly into the crankcase, mixing with engine oil and potentially damaging the head gaskets and connecting rod bearings. Many of these water pump failures occur without warning and repairs often cost thousands of dollars, as the engine needs to be disassembled or removed from the vehicle to access the water pump. In some cases, the engine needs to be replaced outright. A class-action lawsuit was started against Ford as a result of this issue, but it was dismissed and no recall was given. All longitudinally mounted versions of the 3.3, 3.5, 3.5 EcoBoost, and 3.7 V6 use an external water pump.
Affected vehicles • 2008-09 Mercury Sable • 2008-09 Ford Taurus X • 2007-18 Ford Edge • 2009-19 Ford Flex • 2010-12 Ford Fusion Sport • 2007-16 Lincoln MKZ • 2009-13 Mazda 6 3.7L V6 • 2007-15 Mazda CX-9 • 2008-19 Ford Taurus (including SHO) • 2017-20 Lincoln Continental • 2007-18 Lincoln MKX • 2010-19 Lincoln MKT • 2011-19 Ford Explorer • 2013-19 Ford Police Interceptor Sedan • 2013-19 Ford Police Interceptor Utility • 2009-16 Lincoln MKS == See also ==