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Heating and Cooling› Oil and Fluid Coolers

Stillen

Automatic Transmission Cooler Kit

$364.75 $288.57 Save $76.18

SKU: 400865

Out of Stock
In Stock
Ships by Oct 13
Free Shipping over $200
$100 Minimum Order
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

The Stillen 400865 is a transmission cooler kit designed for automatic transmissions.

Reducing internal heat is crucial for automatic transmission performance and longevity. This kit helps eliminate the chance of overheating fluids, preventing viscosity breakdown and transmission strain, thus contributing to a longer transmission life.
Show original supplier description
The Stillen 400865 is a complete transmission cooler kit engineered to enhance the performance and longevity of automatic transmissions. Overheating fluids can lead to viscosity breakdown and significant strain on the transmission, ultimately shortening its lifespan. By reducing internal heat, this kit helps prevent these issues, protecting your transmission whether you're driving on the street or competing at the strip. This kit includes all the necessary adapters, fittings, and hoses required for a straightforward installation. Its primary function is to maintain optimal operating temperatures for the transmission fluid, ensuring smooth operation and preventing premature wear. Designed specifically for the 2002-2006 Nissan Altima, this Stillen transmission cooler kit is a crucial upgrade for owners looking to safeguard their vehicle's automatic transmission against the damaging effects of excessive heat.

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

BrandStillen
Part Number400865
CategoryHeating and Cooling
5,000+ Trusted brands
1M+ Enthusiasts
5M+ Parts sold
(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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