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Engines and Components› Engine Bearings

Koyo

Koyo OEM Replacement 14-14 RLX 3.5L V6 AT

$266.40 $205.74 Save $60.66

SKU: K050 A13421

In Stock
In Stock
Ships by Jun 10
Free Shipping
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

The Koyo A13421 radiator is a high-performance, OE-style replacement radiator designed for optimal cooling. It features a robust 53mm aluminum core, which provides increased coolant capacity for consistent performance. Koyo radiators are manufactured from lightweight aircraft-quality aluminum and are Heliarc welded for enhanced durability.

Fitment

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandKoyo
Part NumberK050 A13421

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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