Koyorad Performance Radiator: Honda Civic EF / CR-X MT 1987-1997

Koyo Aluminium Performance Radiator – Honda Civic EF / CRX MT (1987–1997)Application: Honda Civic MT / Honda CRX MT | E-EF2 / E-EF3 / E-EF4 / E-EF5 / E-EF6 / E-EF7 | D15B / ZC | Manual TransmissionPart Number: KH080146 | KS080146Koyo aluminium performance radiators are engineered as direct-fit replacements for the factory radiator, with increased cooling capacity and durability for demanding use. Each unit is designed to maintain stable coolant temperatures in street, track day and competition environments, while retaining factory mounting points and hose connections for straightforward installation. Made in Japan.The Honda Civic EF and CRX are two of the most iconic lightweight Honda platforms — nimble, rev-happy, and endlessly tuneable. Whether you're running a stock D15B daily or a built ZC track car, the Koyorad KH080146 is a direct bolt-in upgrade that delivers the cooling performance your build deserves.Features High-quality all-aluminium construction with TIG-welded tanks Increased core thickness and surface area compared to OEM radiators Optimised fin density and tube design for efficient heat transfer Direct-fit design using factory mounting locations and fan shrouds Designed to work with standard radiator caps and coolant hoses Pressure-tested for reliability under sustained high load and temperature Performance Benefits Improved coolant temperature stability in track, towing or high-power applications Reduced risk of heat-soak and overheating during repeated hard use Greater durability than plastic-tank OEM radiators, especially with age and vibration Suitable foundation for further performance upgrades such as higher boost levels or track use Specifications Part Number KH080146 / KS080146 Core Type 25mm Core Dimensions (H × W) 325 × 660/684mm Tank Dimensions 35/35 × 687mm Inlet / Outlet Diameter ⌢32mm (top and bottom) Filler Neck Yes Construction All Aluminium, TIG Welded, Lightweight Transmission Manual (MT) — DOHC Origin Made in Japan Fitment Direct bolt-in, no modifications required Cross Reference Koyorad KH080146 / KS080146 Honda OEM 19010 PM3 305 / 19010 PM3 901 Fitment Table Year Make Model Chassis Submodel 1987.09–1991.09 Honda Civic E-EF2 MT — D15B 1987.09–1991.09 Honda Civic E-EF3 MT — ZC 1987.09–1989.09 Honda Civic E-EF4 MT — D15B 1987.09–1997.02 Honda Civic E-EF5 MT — ZC 1987.09~ Honda Civic E-EF7 MT — ZC 1987.09–1992.02 Honda CR-X E-EF6 MT — D15B 1987.09–1992.02 Honda CR-X E-EF7 MT — ZC Sold individually. Manual transmission / DOHC fitment. 32mm hose diameter.