555 Engineering Engine Oil Cooler (2023-24 GR Corolla)

Coolers are made to Order. Typical Lead Time 3-4 Weeks. Expedite possible if required, please contact us in that case. 

The best GR Corolla Engine Oil Cooler kit on the market just got better!

MY23-24 Kit Revision 07/2026

This kit has been revised with a larger core and HEL sandwich plate building on our development experiences with the MY25 EOC kit. Expect an additional 10-20F in temperature reduction from our original revision MY23-24 Oil Cooler kit. 

Find more about the development and testing of this kit here

555 Engine Oil Cooler Key Features:

• Superior pressure loss performance compared to competitors
• Avg 20 - 45F Oil Temperature reduction
• The only ducted Oil Cooler Kit on the GRC Market
• Road and Track Tested
• Mounts using OEM bolt on points
• Heat exchanger located on driver side air curtain and includes metal air duct
• Does not impact airflow to radiator, intercooler, or A/C condenser
• Inlet location already optimized by OEM aerodynamic profile
• Designed for both Core and Circuit Edition Models which have brake ducting
• Confirmed fitment with Verus Engineering brake ducting and does not interfere with FMIC options

Setrab Proline Single Pass Heat Exchanger

• The largest size, yet lowest pressure drop Oil Cooler on the GRC Market
• Features a Race Quality Setrab Single Pass Core that is approx 2x times the frontal area size of any other GRC Setrab based kit
• Spec'd for thermal duty and oil flow characteristics of G16E-GTS
• Single pass exchangers typically exhibit less oil pressure loss than dual pass offerings

HEL Oil Thermostatic Sandwich Plate

• Billet aluminum, polished finish
• Mitigates overcooling for Dual Duty / Daily Driven GRCs
• 200F Thermostat
• Includes 2 ports for aftermarket sensors if desired 

USA Made Heat Shielded / Abrasion Wrapped AN Hoses

• Pressure Tested and Warrantied
• Swivel Jointed fittings for ease of installation 
• Fiberglass sleeved for additional abrasion and heat resistance
• High temp silicone shrink-wrapped at fitting joints to prevent fraying

USA Manufactured Stainless Steel CNC Laser Cut and Bent Brackets

• Powder Coated Black
• Designed using 3D scanning and CAD
• FEA analyzed; Fatigue + Dynamic 3/5 SF
  • Heat tempered in the fires of Mt Doom. Ok, maybe not this one
• Grade 8+ and vibration isolation hardware

USA Manufactured Aluminum Bent Air Ducting

• Anodized Black
• Air ducting directs air from front driver side inlet to Oil Cooler Core
• Includes bulb seals that seal ducting to the inside of the bumper
• Corrosion Resistant Aluminum
• CNC Cut and Bent with Freedom 

USA Manufactured Honeycomb Mesh Air Inlet

• Maximizes air inlet opening for maximum cooling for heavy track use
• Provides protection to Oil Cooler from road debris
• Anodized Black
• Corrosion Resistant Aluminum
• Cut with gnome shooting laser beams
• No Cutting Required for install

USA Manufactured Carbon Fiber Inlet Cover

• Included Carbon Fiber Covers bolt on/off from mesh air inlet in seconds to configure airflow to your preference
  • 100% block off for your morning commute
  • Completely remove for the track and benefit from full air flow
• Includes gloss finished flanged M6 fasteners and vibration damping hardware to install
• Optional wheel well vent also included

Install Difficulty: 4/10
Install Time: 3-4 hours

Customer provided telemetry on track below. Customer shared that they saw a 30F temperature reduction from previous events (260s in December to 230s in May). 

(Gen 1 kit)

And here's our cooler suite on the North America SARD GR Corolla at Willow Springs, full oil pressure and temperature telemetry included! (Gen 1 kit)

And again here on the Delta X Motorsport GR Corolla built and driven by our friend Jeff. (Gen 1 kit)

Note: This kit will remove the driver side air curtain to redirect air flow to the new Oil Cooler. Air flow testing was done on track in Core Wing and CE Wing configurations.