Heating and Cooling Oil and Fluid Coolers

Grassroots

19-Row Oil Cooler Kit

$465.00

SKU: OCK19NIZ

Special Order
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 Grassroots OCK19NIZ is a 19-row direct-fit oil cooler kit designed for Nissan 350Z/370Z and Infiniti G35/G37 models. This kit is a vital upgrade for performance and track builds, offering added cooling efficiency and increasing oil capacity by 0.38L. The cooler is constructed from T-6061 aluminum with a core size of 11.5" x 5.5" x 2.00" and has been tested to 150 psi.
Show original supplier description
The Grassroots Performance OCK19NIZ is a complete bolt-on 19-row oil cooler kit engineered for Nissan 350Z/370Z and Infiniti G35/G37 vehicles. This kit aims to enhance engine cooling efficiency and provide additional engine bay space, making it a vital upgrade for performance and track applications. The oil circulates through high-temperature, high-pressure lines to the cooler, which is 2 inches thick and designed to help maintain peak oil performance temperatures. This also aids the overall engine cooling system by reducing heat from internal engine components. Recent upgrades include specified line lengths for better ground clearance, upgraded hardware for easier servicing, 90-degree fittings on all line ends for improved flow, and an enhanced bracket design for simpler installation. The core measures 11.5" x 5.5" x 2.00" and is constructed from T-6061 aluminum. It has been working load tested up to 150 psi, offers an increased oil capacity of 0.38L, and features -10AN in/out fittings. For optimal performance, it is recommended to use a 2008 Nissan Titan V8 oil filter. This kit includes the 19-row oil cooler, -10AN 90-degree swivel fittings installed on 47" and 62" lines, an oil cooler adapter plate, and a mounting bracket with hardware for direct installation on applicable models. A thermostatic adapter option is available for optimal street and track use, opening at 187°F to maintain optimal operating temperatures and allowing oil to flow through the cooler only when increased temperatures are detected. This version also features two ports for oil feed or sensor usage. NOTE: This kit does not fit 2012+ models or any AWD models without minor modification.

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

BrandGrassroots
Part NumberOCK19NIZ
CategoryHeating and Cooling

About MOTORMIA

5,000+ Trusted brands
1M+ Enthusiasts
5M+ Parts sold

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