Koyo Radiator – 1976–1977 Toyota Celica 2.2L I4 | Manual Transmission | OEM Replacement

The Koyo Radiator for the 1976–1977 Toyota Celica 2.2L inline-four with manual transmission is a direct OEM-replacement radiator engineered to restore correct cooling system performance on the A20/A40 Celica platform — replacing the factory radiator with a Koyo unit that provides correct fitment, correct coolant capacity, and the quality aluminium construction that Koyo is known for. Koyo is one of the most respected radiator brands in the performance and OEM replacement aftermarket — a Japanese manufacturer with a long history of supplying radiators to OEM manufacturers and the performance aftermarket. This radiator is for manual transmission (MT) applications only — not compatible with automatic transmission Celica applications.

Key Features:

• OEM replacement fitment — direct replacement for the factory 1976–1977 Toyota Celica 2.2L I4 manual transmission radiator — correct dimensions, inlet/outlet positions, and mounting for the A20/A40 Celica
• Manual transmission specific — engineered for MT applications — the MT radiator does not include automatic transmission fluid cooler provisions present in AT radiators
• Koyo quality — manufactured by Koyo, a Japanese radiator manufacturer with a long history of OEM and aftermarket radiator supply
• Correct cooling capacity — engineered to provide correct coolant flow and heat rejection for the 2.2L 20R inline-four in the 1976–1977 Celica
• Direct-fit installation — uses the factory mounting points and hose connections for a straightforward OEM replacement installation

Manual Transmission vs. Automatic Transmission — Why It Matters:

This radiator is for manual transmission (MT) Celica applications only. Automatic transmission radiators include an integrated automatic transmission fluid (ATF) cooler — a separate internal circuit within the radiator that circulates ATF through the radiator to cool the transmission fluid. MT radiators do not include this ATF cooler circuit. Installing an MT radiator on an AT Celica will leave the automatic transmission without its factory fluid cooling provision — a serious reliability risk. Verify your specific Celica's transmission type before ordering.

Specifications:

• Brand: Koyo
• Part Number: KOYHH012756
• Barcode: HH012756
• Application: 1976–1977 Toyota Celica — 2.2L I4 (20R) — manual transmission
• Transmission: Manual (MT) only
• Weight: 13.1 lbs (shipping weight)

Fitment Information:

• 1976–1977 Toyota Celica — 2.2L inline-four (20R engine) — manual transmission
• Direct OEM replacement — uses factory mounting points and hose connections
• Critical: Manual transmission applications only — not compatible with automatic transmission Celica. Verify your specific Celica's transmission type before ordering. Verify model year fitment — the A20/A40 Celica underwent specification changes across model years that may affect radiator fitment. Confirm that KOYHH012756 is the correct radiator for your specific 1976 or 1977 Celica before ordering.

What's Included:

• Koyo OEM replacement radiator — 1976–1977 Toyota Celica 2.2L I4 MT (KOYHH012756)
• Refer to Koyo's product documentation for complete kit contents

Installation Notes:

• Drain the cooling system completely before radiator removal — dispose of old coolant correctly — coolant is toxic to animals and must not be poured down drains or left accessible
• Inspect all coolant hoses, hose clamps, and the thermostat before installation — a radiator replacement is the correct time to replace aged hoses and a suspect thermostat on a 1976–1977 Celica
• Flush the cooling system before installing the new radiator — old coolant and scale deposits in the engine block and hoses will contaminate the new radiator and reduce its service life
• Use the correct coolant specification for the 20R engine — verify the correct coolant type and mix ratio for your specific application
• Check all hose connections and clamps for leaks after installation and after the first heat cycle — thermal expansion can affect clamp tension on initial use
• Verify correct coolant level and bleed any air from the cooling system after filling — air pockets in the cooling system cause localized overheating

Why Koyo?

Koyo is a Japanese radiator manufacturer with a long history of supplying radiators to OEM manufacturers and the performance aftermarket — known for their quality aluminium construction, correct OEM fitment, and a product lineup that covers a wide range of Japanese and domestic performance platforms. For 1976–1977 Toyota Celica owners who need a quality OEM replacement radiator from a brand with genuine Japanese radiator manufacturing credentials, Koyo is the correct choice.

Perfect For:

• 1976–1977 Toyota Celica 2.2L I4 (20R) owners with manual transmission who need a quality OEM replacement radiator to restore correct cooling system performance
• A20/A40 Celica restoration and maintenance builds where a quality Koyo radiator replaces the factory unit that has reached the end of its service life
• Classic Toyota Celica owners who want a correct-fitment OEM replacement radiator from a reputable Japanese manufacturer

Note: Manual transmission (MT) applications only — not compatible with automatic transmission Celica. Verify 1976 or 1977 model year fitment before ordering. Flush cooling system before installation. Inspect and replace hoses and thermostat as required. Bleed air from cooling system after filling.