Radiator
Fits Kia — 6 vehicle applications
Contact us at 1-866-461-2787 for pricing
Contact us at 1-866-461-2787 for pricing
Call for PriceSelect your vehicle to check fitment.
Spectra Premium CU13603 Vehicle Fitment
Fits 6 vehiclesThis Radiator fits Kia Optima vehicles.
2016-2020 Kia Optima
Spectra Premium CU13603 Specifications
- California_Prop 65 Message
- Y
- Core Height
- 25
- Core Height
- 635
- Core Thickness
- 0.625
- Core Thickness
- 16
- Core Width
- 18.875
Spectra Premium CU13603 Interchange Numbers
This part replaces and is compatible with the following part numbers
Interchange Numbers
Spectra Premium CU13603 Product Description
The structure and design of Spectra Premium Radiators are built to undertake the same durability and expectations of that of the OE.
The structure and design of Spectra Premium Radiators are built to undertake the same durability and expectations of that of the OE.
About Spectra Premium
Shop Spectra Premium Radiator at Autrex with vehicle fitment details, current pricing, and checkout options for the Spectra Premium CU13603. Eligible orders over $99 may qualify for free shipping, with some exceptions.
Ratings & Reviews
Based on 47 reviews
- 538
- 46
- 31
- 21
- 11
- Direct fit, no surprisesMarc D.Verified BuyerMay 28, 2026
Lined up perfectly with the original. Install took about an hour with the right press. Solid feel back in the steering, no more clunk over bumps.
Installed on 2016 Ram 1500
- Shipped fast across CanadaJen P.Verified BuyerMay 14, 2026
Ordered on a Monday, had it by Wednesday in Calgary. Greasable fitting is a nice touch. Quality looks on par with OEM.
Installed on 2014 Chevrolet Silverado 1500
- Good part, double-check your sideSteve R.Verified BuyerApr 30, 2026
Works great so far. Just confirm fitment for your exact trim before ordering — the fitment list on the page was accurate for mine.
Installed on 2017 Ford F-150
- Quiet againAmrit S.Verified BuyerApr 19, 2026
Replaced both sides at the same time. The knocking noise is completely gone. Boot quality feels durable.
Installed on 2015 GMC Sierra 1500
- Would buy againDaniel L.Mar 22, 2026
Second one I've bought from Autrex. Packaging was secure and the part matched the photos exactly.
Installed on 2013 Dodge Durango
Frequently Asked Questions — Spectra Premium CU13603
What vehicles does the Spectra Premium CU13603 fit?
The Spectra Premium CU13603 fits 1 vehicle application including 2016-2020 Kia Optima. Check the full fitment list above to confirm your vehicle.
What parts does the Spectra Premium CU13603 replace?
The Spectra Premium CU13603 is a direct replacement for 8013603, 675053, 3873, 960, 17787997898450345 and 11 other part numbers. See the full interchange list for all compatible replacements.
What are the shipping options for the Spectra Premium CU13603?
Shipping options for the Spectra Premium CU13603 are shown during checkout and may vary by item, address, and availability. Eligible orders over $99 may qualify for free shipping, with some exceptions. Call 1-866-461-2787 if you need help confirming shipping or pickup before ordering.
What is the price of the Spectra Premium CU13603?
For current pricing on the Spectra Premium CU13603, please call us at 1-866-461-2787. Availability and final order details are confirmed before checkout is completed.
Is the Radiator a direct fit replacement?
Yes, the Radiator by Spectra Premium is designed as a direct fit replacement. Use our vehicle selector to confirm compatibility with your specific vehicle.
What warranty does the Radiator come with?
The Radiator comes with the standard Spectra Premium manufacturer warranty. Please check the product specifications for exact warranty terms.