What is the engine code for a 1991 Honda Prelude?
The engine code for a 1991 Honda Prelude is F20A.
In the 1991 Prelude, part of Honda’s third-generation lineup, the 2.0-liter inline-four powering most models carried the F20A designation. This article unpacks what that code means, where to find it on the car, and how to verify it on a specific vehicle.
What the F20A code means for the 1991 Prelude
The F20A is part of Honda’s F-series family, representing a 2.0-liter, double-overhead-camshaft (DOHC) inline-four engine. For the 1991 Prelude, this configuration was the standard powerplant in most markets, delivering a balance of performance and reliability that defined the third-generation car's driving character. Engine codes help technicians identify parts compatibility, service procedures, and potential recalls.
Common points about 1991 Prelude engine codes
Note: The 1991 Prelude primarily uses the F20A engine code. Market-specific variations exist, but the F20A is the baseline identifier most owners will encounter on engine stamps and service documents.
- F20A — 2.0L DOHC inline-4, the usual engine code for 1991 Prelude models in many regions.
For precise confirmation, refer to the engine block stamp or the under-hood label, and compare against your vehicle’s VIN and service history.
How to verify the engine code on your 1991 Prelude
To confirm the exact engine code on a specific car, use these verification steps:
- Inspect the engine block stamping near the cylinder head or timing cover for the code "F20A" (or variants like F20A1 in some markets).
- Check under-hood labels or the emissions label, which often list the engine code alongside the VIN.
- Consult the owner’s manual or a factory service bulletin for the original engine specification.
- Compare with the vehicle’s VIN-based build sheet if available from a Honda dealer or a trusted parts catalog.
Accurate verification helps ensure the right parts and maintenance plans for the 1991 Prelude, especially for timing belts, ignition components, and fuel delivery systems that were tuned to the F20A specification.
Summary
In summary, the engine code for most 1991 Honda Prelude models is F20A, reflecting Honda’s 2.0-liter DOHC four-cylinder configuration of that generation. When assessing a specific vehicle, verify the code on the engine block or under-hood label, and consult service records to confirm the exact variant.
