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Introducing the all-new Grassroots Performance Honda S2000 Oil Cooler Kit

Suitable for AP1 & AP2

Time attack, lapping, drift, even spirited driving all put a strain on your high-revving S2000 engine components. Get ahead and eliminate potential oil failure by installing a Grassroots Performance Bolt-On Oil Cooler Kit. 

Utilizing a custom CNC cut aluminum mounting bracket, paired with our proven Grassroots 19-Row Oil cooler, Oil Block adapter, and premade Oil Lines, this kit has everything you need to get the job done. Installing this kit will require no modification to any of your S2000 existing components. The cooler fits perfectly utilizing factory holes and supplied hardware. 

Available in both standard passthrough design, and thermostatic, both block adapters have 2 x 1/8 NPT ports for additional gauges or oil feeds. Engines can expect to see over 20*C (70*F) in oil temperature drop, with minimal oil pressure drop, and an additional 0.4L of oil capacity. All this performance is backed by a Limited Lifetime Warranty provided directly from us. If you're trying to keep your S2000 "Cool", look no further.


For Street and Track applications, the thermostatic plate (opens at 187.F deg). This setup allows your vehicle to maintain optimal operating temperatures at all times. If your vehicle is not in constant demand of aided oil cooling, the thermostatic valve will remain shut and your oil system will operate as normal with no interruption. When heavy load and increased temperature occur, the automatic valve will allow the oil to flow through the cooler and reduce temps to peak performance. Version 2 has two ports for oil feed or oil sensor usage.

  • 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
  • [1] 19 Row Oil Cooler
  • [1] -10AN 90-Degree Swivel Fittings Installed on Both Ends to 47" Lines 
  • [1] -10AN 90-Degree Swivel Fittings on Both Ends Installed to 52" Lines 
  • [1] Oil Cooler Block Adapter Plate
  • [1] Mounting Bracket for direct installation on any Honda S2000 AP1-AP2. INCLUDES HARDWARE

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.