Mishimoto MMOC-CTR-23TBK Oil Cooler Kit Black Thermostatic 2023-2026 Civic Type

Vehicle Fitment

• 2023-2026 Honda Civic Type R (FL5, K20C1 2.0L Turbo I4, FWD, Manual Transmission)

Fitment Notes

• Fits all 2023+ Honda Civic Type R (FL5) models equipped with the K20C1 2.0L turbocharged engine.
• This is the thermostatic black variant (MMOC-CTR-23TBK) - thermostatic operation restricts oil flow to the cooler until oil reaches optimal operating temperature, making it suitable for daily driving and cold-climate use.
• Also available in thermostatic silver (MMOC-CTR-23TSL) - same kit and specifications, different cooler finish.
• Minimal trimming of one plastic trim piece is required to achieve proper clearance for the oil lines - no structural modification to the vehicle is needed.
• The horn is relocated using its existing factory bracket - wiring harness remains intact and horn position and function are preserved.
• It is the installer's responsibility to verify all fittings and connections are fully tightened before operating the vehicle. Mishimoto recommends checking all connections at regular intervals during the first few miles after installation.

Features

• 19-row stacked plate oil cooler positioned to capture maximum airflow behind the FL5's front structure - delivers approximately 5°F reduction in oil temperature under demanding driving conditions compared to stock.
• 12% increase in total oil system capacity over stock - provides greater thermal mass and oil volume to absorb heat during sustained high-load driving, track sessions, and spirited street use.
• Thermostatic operation prevents overcooling during warm-up - oil flow to the cooler is restricted until optimal operating temperature is reached, protecting the engine during cold starts and daily driving in cool conditions.
• Black nylon-sheathed stainless-steel braided oil lines provide abrasion resistance and structural integrity under pressure and heat cycling throughout the engine bay.
• Billet oil line separator on the frame rail organizes and secures oil lines away from belts and moving components, reducing the risk of wear or interference.
• High-temperature silicone and fiberglass protective sleeves cover all critical line-routing points for long-term durability at engine bay temperatures.
• Stealth black powder coat finish on the cooler core suits builds preferring a low-profile, blacked-out engine bay aesthetic.
• Direct-fit design - application-specific brackets, hardware, and lines included for the FL5 CTR platform.
• Backed by Mishimoto's Lifetime Warranty.

Specifications

• Fitment: 2023-2026 Honda Civic Type R (FL5), K20C1 2.0L Turbo I4, FWD
• Core Type: 19-Row Stacked Plate Oil Cooler
• Cooler Finish: Black Powder Coat
• Thermostat: Included (Thermostatic Operation)
• Oil Capacity Increase vs. Stock: 12%
• Tested Oil Temperature Reduction: ~5°F vs. Stock
• Lines: Black Nylon-Sheathed Stainless-Steel Braided (-10 AN)
• Horn Relocation: Uses Existing Factory Horn Bracket
• Installation Difficulty: Medium

Included Components

• 1x Mishimoto 19-Row Stacked Plate Oil Cooler (Black)
• 1x Thermostatic Oil Sandwich Plate
• 1x Billet Oil Line Separator
• Black Nylon-Sheathed Stainless-Steel Braided Oil Lines with -10 AN Fittings
• Application-Specific Mounting Brackets
• High-Temperature Silicone and Fiberglass Line Sleeves
• 1x Mounting Hardware Kit
• 1x Mishimoto Lifetime Warranty

Product Description

The Mishimoto MMOC-CTR-23TBK is a direct-fit thermostatic oil cooler kit engineered specifically for the 2023-2026 Honda Civic Type R (FL5) powered by the K20C1 2.0L turbocharged inline-four. The FL5 CTR is one of the highest-performing front-wheel-drive production cars available, but its high-revving turbocharged engine generates substantial heat in the oil system during sustained hard driving, back-to-back track laps, or aggressive street use. The factory oil cooling system manages temperatures effectively under moderate conditions, but pushing the engine hard - or running an aggressive tune - can elevate oil temperatures into ranges that accelerate wear on critical engine components. The Mishimoto kit addresses this directly with a 19-row stacked plate cooler that increases total oil system capacity by 12% and delivers approximately 5°F lower oil temperatures under demanding conditions compared to stock.

The thermostatic sandwich plate included in this kit makes it the correct choice for daily drivers and owners in varied or colder climates. Until the oil reaches optimal operating temperature, the thermostat restricts flow to the cooler - ensuring rapid warm-up and preventing the oil from running colder than ideal during normal driving. Once operating temperature is reached, the thermostat opens fully to route oil through the cooler and back. The 19-row stacked plate core is positioned behind the FL5's front structure to access maximum airflow and finished in stealth black powder coat - the ideal choice for builds with a blacked-out engine bay or for owners who prefer an understated appearance over the polished silver variant. Black nylon-sheathed stainless-steel braided lines route oil to and from the cooler, with a billet separator on the frame rail keeping lines clear of belts and moving components. High-temperature silicone and fiberglass sleeves protect all critical line-routing points.

Installation is direct-fit with application-specific brackets and hardware included for the FL5 platform. The horn is relocated using its existing factory bracket with no wiring modification, and minimal trimming of one plastic trim piece is required for proper line clearance. Also available in thermostatic silver (MMOC-CTR-23TSL) for owners preferring a polished finish. Backed by Mishimoto's Lifetime Warranty.