What is the engine code for the RSX S?
The RSX Type-S uses the K20A3 engine code.
The Acura RSX Type-S, produced from 2002 to 2006, features a 2.0-liter i-VTEC engine whose official designation in most markets is K20A3. This code differentiates the Type-S from other RSX variants, and engine code nomenclature can vary by market and production year. Understanding the code helps with parts compatibility, maintenance, and verification when buying a used RSX.
What the code means in practice
In Honda/Acura's K-series naming, the "K" family denotes the line, "20" indicates 2.0 liters, and the trailing A3 (or A2) identifies the specific variant with its tuning, internals, and electronics. For the RSX, K20A3 is the commonly cited designation for the Type-S variant, offering higher output and different components than other K-series 2.0 engines in the lineup. Market-specific versions may vary slightly in the exact code, but K20A3 is the standard reference for the RSX Type-S.
How to verify the engine code on your RSX
To confirm your RSX's engine code, check common stamping points and official documents. Here are steps you can take:
- Engine block stamping: Look for the K20A3 marking near the front of the engine block, typically on the block itself or on a nearby plate.
- Valve cover label: Some models display the engine code on the valve cover or on a label attached to it.
- Vehicle documentation: Check the original window sticker, owner's manual, or the service history for the engine code.
- VIN-based build sheet: The factory build sheet or Honda/Acura service portal lists the engine code tied to your VIN.
If the car has been modified or swapped, the engine code may differ from the original; cross-reference multiple sources for certainty.
Summary
The RSX Type-S is commonly associated with the K20A3 engine code, reflecting its tuned 2.0-liter i-VTEC design. When researching a specific car, verify the code through engine stamping, labels, and official documents to ensure you are looking at the correct variant.
