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This kit will enhance the oil life and lubrication of your Nissan engine. The oil block plate adapter for Nissan SR20DET, SR20DE, S13, S14, S15 is CNC machined from high-grade billet 6061 aluminum and features ports for oil pressure and oil temperature sensors. This part will eliminate the factory OEM filter housing, and allow for easy filter relocation. This part is perfect for daily vehicles, or track enthusiasts. USES OEM NISSAN BLOCK GASKETS for the absolute best fitment and reliability.

2023 UPGRADE: Now available for the SR20DET kit/ GRASSROOT  x DERALE  in-line Thermostatic kit. Utilizing a DERALE fluid control unit and Grassroots quality fittings we have created a easy to install thermostatic version of our remote mount kits. This allows remote mount filter relocation and thermostatic control of your oil cooler system.


This Billet Style Cast Aluminum Fluid Control Thermostat with 1/2" NPT ports allows the oil to bypass the cooler until it reaches 180°F (82.C) at which point the internal thermostatic valve will close and force 100% of the oil through the cooler while maintaining a constant pressure system. This process allows the engine/transmission to achieve the ideal operating temperature quicker before passing the oil through the cooler. The unit can be rotated 180° to change flow direction. Bypasses cooler until fluid temperature reaches 180°F; Provides quicker warm-up temperatures; Perfect for cold weather climates; Can be rotated 180° to switch flow direction; Flows up to 20 gallons per minute; Rated up to 200 psi. 

Simple installation is key for this custom direct-fit oil cooler kit. A vital upgrade to any performance/track builds for added cooling and engine bay space. The oil leaves the block and travels through our adjustable length high-temperature/high-pressure hoses. Grassroots line of performance oil coolers can be used for a variety of oil types, increasing cooling efficiency and oil capacity. Classic design and proven engineering, this 2" thick dual-core oil cooler kit allows your oil to maintain peak performance temperature, also aiding the engine cooling system from heat-soaked internals.

Core Size: 11.5" x 5.5" x 2.00"
Overall Size: 13" x 6.6" x 2.00"
High-Quality T-6061 Aluminum
Working load tested up to 150 psi
.38L increased oil capacity
-10AN In/Out 
For optimal performance use Grassroots Performance Racing Oil Filter

[1] 19 Row Oil Cooler
[1] Set of OEM NISSAN SR20 Oil Block Gaskets
[2] (47") Stainless Steel Braided Nylon Hose with 90 & 90 -10AN Fittings
[1] (62") Stainless Steel Braided Nylon Hose with 90 & 90 -10AN Fittings
[1] SR20DET Adapter Plate
[1] Filter Relocation Block

Optional Grassroots Racing Oil Filter

Optional Thermostatic Unit

Grassroots Performance Limited Lifetime Warranty. This warranty is strictly applying to the sole part produced under the Grassroots Performance line of cooling parts. Ultimately covering oil cooling components and radiator components only which are sold under the “Grassroots Performance” line. The warranty is only valid for the “Original” purchaser of the Grassroots Performance product. The warranty is non-transferable. 

To validate your cooling product and be eligible for a full warranty, the consumer must fill out the provided form. This form will be emailed to the owner after purchase. The product is then validated and will take on the limited lifetime warranty. The warranty form and product installation must be completed within 90 days of receiving the product to be eligible.

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