Koyo 88-91 Honda Civic and CRX EF Chassis B-Series Manual Transmission All-Aluminum Radiator KH080146

Lightweight Rad. Manual Transmission only. For DOHC w/ 32mm hoses only

The Koyo KH080146 all-aluminum radiator is designed for 1988–1991 Honda Civic and CRX models with the EF chassis, B-Series engine applications, and manual transmissions. Built as a lightweight replacement radiator, it supports dependable engine cooling for street-driven and performance-oriented vehicles while maintaining compatibility with the factory cooling system configuration.

This Koyo radiator is intended specifically for DOHC applications using 1.25-inch radiator hoses. Its all-aluminum construction provides a durable alternative to conventional plastic-tank radiators, helping resist cracking and deterioration caused by heat and repeated thermal cycling. The lightweight design also helps reduce unnecessary vehicle weight without compromising practical cooling performance.

Key Product Specifications and Technical Data

• Brand: Koyo
• Part Number: KH080146
• Product Type: Automotive replacement radiator
• Vehicle Application: 1988–1991 Honda Civic and CRX EF chassis
• Engine Application: B-Series DOHC engines
• Transmission Compatibility: Manual transmission only
• Hose Compatibility: Designed for 1.25-inch radiator hoses
• Construction: Lightweight all-aluminum radiator assembly

What's Included in the Box

• One Koyo KH080146 all-aluminum radiator

Fitment

Fits select 1988, 1989, 1990, and 1991 Honda Civic and Honda CRX models with the EF chassis, B-Series DOHC engine, manual transmission, and compatible 1.25-inch radiator hoses. Verify the engine, transmission, hose configuration, and vehicle application before ordering.

Features:

• Lightweight all-aluminum construction helps reduce vehicle weight while providing a durable replacement for the original radiator.
• Designed for Honda Civic and CRX EF chassis vehicles equipped with B-Series DOHC engines.
• Manual transmission specific design supports proper application matching for compatible vehicles.
• Built for DOHC cooling systems using 1.25-inch radiator hoses.

Fitments:
1988 Honda Civic Base
1988 Honda Civic DX
1988 Honda Civic LX
1988 Honda Civic RT 4WD
1988 Honda Civic Wagovan
1989 Honda Civic Base
1989 Honda Civic DX
1989 Honda Civic LX
1989 Honda Civic RT 4WD
1989 Honda Civic Si
1989 Honda Civic Wagovan
1990 Honda Civic Base
1990 Honda Civic DX
1990 Honda Civic EX
1990 Honda Civic LX
1990 Honda Civic RT 4WD
1990 Honda Civic Si
1991 Honda Civic Base
1991 Honda Civic DX
1991 Honda Civic EX
1991 Honda Civic LX
1991 Honda Civic RT 4WD
1991 Honda Civic Si

Air Freight Prohibited: false
Not Carb Approved: false
Ltl Freight Required: false
Prop 65: N
Part Type: automotive
Epa: N/A
Carb Acknowledgement Required: false
Regular Stock: t
Units Per Sku: 1