Heating and Cooling› Oil and Fluid Coolers

Nissan

Automatic Transmission Oil Cooler Assembly

$769.98

SKU: 21606-3JA1B

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Special Order
Ships in 4–6 weeks
Free Shipping over $200
$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

The Nissan 21606-3JA1B is an automatic transmission oil cooler assembly. It is designed as a direct replacement part and replaces part number 21606-3JA0A. This genuine Nissan part is manufactured to stringent factory specifications.
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The Nissan 21606-3JA1B is a genuine OEM automatic transmission oil cooler assembly, designed as a direct replacement for specific Nissan Pathfinder models. This part replaces the previous part number 21606-3JA0A and is manufactured by Nissan to meet their rigorous factory specifications. This oil cooler assembly is crucial for maintaining the optimal operating temperature of your vehicle's automatic transmission fluid, which is essential for smooth shifting and longevity. Proper cooling prevents overheating, which can lead to premature wear and transmission failure. This genuine Nissan part is guaranteed by Nissan's factory warranty. It is important to note that this part is listed as discontinued by the manufacturer. It is designed for the 2013-2015 Nissan Pathfinder equipped with either the 4 Cyl 2.5L QR25DER or 6 Cyl 3.5L VQ35DE engine, across Platinum, S, SL, and SV trims.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

BrandNissan
Part Number21606-3JA1B
CategoryHeating and Cooling
5,000+ Trusted brands
1M+ Enthusiasts
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(760) 282-4645 hello@motormia.co

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Returns & Fitment

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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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.

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