Sale

Heating and Cooling› Oil and Fluid Coolers

B-Line

Top Mount Oil Cooler Kit

$1,295.00 $1,195.00 Save $100.00

SKU: WRX-625-3T

In Stock
In Stock
Ships by Sep 13
Free Shipping over $200
$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

The B-Line WRX-625-3T is a top mount oil cooler kit designed for Subaru STI models from 2015 through 2020. This kit features a high-capacity, 25-row oil cooler engineered to reduce high engine oil temperatures. It includes double-braided -10AN aircraft quality hoses, a high-flow aluminum thermostatic sandwich plate adapter set to 185°F (85°C), and vehicle-specific aluminum mounting brackets.
Show original supplier description
The B-Line Motorsports Top Mount Oil Cooler Kit is engineered to provide a robust solution for managing high engine oil temperatures in Subaru STI vehicles from 2015 to 2020. As the original developers of top mount oil coolers for WRX and STI models, B-Line Motorsports brings their expertise to this updated kit. The kit features a high-capacity, 25-row oil cooler designed for maximum efficiency. It utilizes durable, double-braided -10AN aircraft quality hoses with a stainless steel inner braid and a protective nylon outer braid for extreme heat resistance. A high-flow aluminum thermostatic oil filter sandwich plate adapter, calibrated to engage at 185°F (85°C), ensures optimal oil temperature regulation. The kit also includes vehicle-specific, B-Line Motorsports designed and manufactured aluminum mounting brackets and all necessary installation hardware. The kit is noted to fit with most aftermarket headers and charge piping. However, installation with certain aftermarket components may require an additional spacer for proper clearance. This top mount oil cooler kit can achieve temperature drops of up to 35°F (1.7°C), significantly enhancing the longevity and performance of your STI's engine under demanding conditions.

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

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

BrandB-Line
Part NumberWRX-625-3T
CategoryHeating and Cooling
5,000+ Trusted brands
1M+ Enthusiasts
5M+ Parts sold
(760) 282-4645 hello@motormia.co

Buy with Confidence

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.

View Full Return Policy

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.

View Full Shipping Policy