HKS SST Oil Cooler for 2008-16 Mitsubishi Evo X [CZ4A] 27002-AM001


2007-16 Mitsubishi Evo X [CZ4A]

SST Oil Cooler (2008) by HKS for the Mitsubishi CZ4A Evo X

HKS PN# 27002-AM001

Part Number: HKSEVOX31 Vehicles: , , , Brand:

Please note that this brand offers a wide variety of parts, some of which are kept in stock. However, not all products from this brand are kept in regular inventory. As a result, lead times can vary (from 1 day to weeks or months). Following your order, a representative will contact you to explain the order process, and provide an estimated timeframe for delivery. . Following the discussion, should you choose to continue with the order there will be no further option for cancellation (if there are any concerns regarding lead time, please advise us immediately during the initial follow-up). Please order with confidence, as at the time of the initial contact and after being informed of the estimated lead time, should you choose to cancel, you may do so within 1 business day. You are encouraged to read and understand the full terms and conditions of the sale here.



“Failsafe mode problem due to excessive SST fluid temperature” is the weak point of LANCER EVOLUTION X SST for sport driving. HKS SST Fluid Cooler Kit was developed to solve this problem.

The HKS SST Oil Cooler Kit Mitsubishi Lancer Evolution X CZ4A delivers great performance under extreme temperatures and hard driving when your engine needs it the most. This will contribute to extending the amount of driving your CZ4A which will be able to do before activating Failsafe Mode due to the transmission overheating.
HKS released SST Oil Cooler Kit to assist in increasing the performance of engine oil. The Oil Cooler Kit helps prolong the life of internal engine components. Aggressive driving causes higher engine temperatures. Factory oil coolers are normally small water-cooled devices sandwiched between the oil filter and engine block. These are big load for the cooling system even under normal driving conditions. The new kit also offers an enhancement of thermostat to give quick engine warm up.



Stock car is in safe mode after 10 minutes of driving due to excessive oil temperature. It took HKS SST OIL COOLER KIT installed car twice as long as to reach the temperature to enter the safe mode. A driver can concentrate on driving without concerning for the failsafe mode.

Kit Parts

  • SST Fluid Pump
  • Fittings
  • Air-cooled Core (W32 9 rows)
  • Brackets
  • Hoses
  • Bolts, etc.


Normal Core vs. Large Core


In-house test results show that there was not big difference of oil temperature between a stock core and large core. Even adding a cooling fan did not show any improvement. However, HKS’ original cooling system did significantly lower the oil temperature. HKS SST Fluid Cooler Kit is a must item for sporty driving with Lancer Evolution equipped with the SST.

Note for Installation

  • Slight modification to the resin parts is required.
  • Factory fog lights can be used together.
  • HKS Intercooler can be used together.

Required Parts

  • SST Oil 7L (Mitsubishi Factory SSTF-I) P/N: C0002610 (4L)
  • 2m wire (AV2.00sq / Conductor Max. Capable Temp: 80℃+)
  • ON-OFF Switch 1 pc.
  • Relay 1 pc. (Operation Voltage: approx. 200W)
  • Fuse Holder 1pc. (Capable Current: approx. 15A)
  • Connector Terminals

If interested, please contact us at Bulletproof Automotive for more information regarding pricing, fitment, shipping costs, as well as installation recommendations.

Part #: 27002-AM001