DENSO Auto Parts Radiator P/N:221-3701
DENSO Auto Parts 221-9321 radiator for the 2013-2015 Cadillac ATS 4-cylinder 2.0L or V6 3.6L and other vehicles carries engine coolant through its core to shed heat. Proper engine cooling and function depend on the radiator working as it should.
A coolant leak at the core or tanks, a temperature gauge that climbs or a coolant level that keeps dropping can mean the radiator is failing. These signs alone do not prove the radiator is at fault; a stuck thermostat is another common cause. If you check the coolant level, do it with the engine cool. Each vehicle takes one radiator, and this listing is a single radiator.
This radiator is a direct-fit replacement for the 2013-2015 Cadillac ATS 4-cylinder 2.0L or V6 3.6L and the 2014-2015 Cadillac CTS 4-cylinder 2.0L or V6 3.6L.
Fit and size
Build and materials
One radiator with its transmission oil cooler.
This part cross-references / interchanges with the following part numbers:
Is the DENSO 221-9321 a radiator for the 2014-2015 Cadillac CTS 4-cylinder 2.0L or V6 3.6L?
Yes. DENSO Auto Parts 221-9321 fits the 2014-2015 Cadillac CTS with either the 4-cylinder 2.0L or the V6 3.6L engine.
Does this radiator come with a transmission oil cooler?
Yes. The transmission oil cooler is included with this radiator.
What size are the inlet and outlet on the DENSO 221-9321 radiator?
The DENSO Auto Parts 221-9321 inlet and outlet both measure 1.34 inches in diameter. The core is 20.67 inches high, 19.79 inches wide and 1.06 inches thick.
How can I tell if this radiator is leaking?
With the engine off and cool, look at the core and tanks for wet spots, coolant residue or corrosion. A coolant level that keeps dropping can also point to a leak; a shop can pressure-test the system.
What is the core of this radiator made of?
The core is thin-tube aluminum, and its fin pitch is meant for efficient heat transfer.
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WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.