Will OEM 2004-09 S2000 (AP2, F22C1) valve spring retainers, intake side fit a Honda S2000 (AP1, 2000-2003)?
Added · Updated
Short answer: Yes, reportedly Limited
Verdict:Fits Limited confidence (1 of 3) · 2 sources
Yes, reportedly: Common forum upgrade: fit the later 2004-09 retainers on the intake valves of a 2000-03 F20C.
| Part | OEM 2004-09 S2000 (AP2, F22C1) valve spring retainers, intake side |
|---|---|
| Part comes from | Honda S2000 (AP2, 2004-2009) |
| Vehicle | Honda S2000 (AP1, 2000-2003) |
| Years | 2000-2003 |
| Trim / condition | F20C, intake side only |
| Verdict | Fits Reported to fit |
| Confidence | Limited 1 of 3 — Forum, Reddit or anecdotal report, or ambiguous/partial detail. Treat as a lead to research. |
| Last verified | 2026-10-26 (date the cited sources were last read) |
Details
Common forum upgrade: fit the later 2004-09 retainers on the intake valves of a 2000-03 F20C. Owners say the newer retainers raise the over-rev rpm at which hidden damage starts. The thread advises intake side only. Forum sources only.
Specs
- note: The later retainer design fitted to 2004-09 engines per forum threads; 2000-03 engines have the earlier design.
Related known issues
Related build entries
More for this car
- All Honda S2000 (AP1, 2000-2003) fitment answers · AP1 common problems
- Newsletter archive: past issues with every new and corrected entry
Sources
- Ap1 Retainer swap — S2KI Honda S2000 forum (forum thread; read 2026-10-26; full page read)2000-03 old retainers, 2004-09 new; change intake side only.
- AP1 or AP2 valve spring retainers - which ones on my engine? — S2KI Honda S2000 forum (forum thread; read 2026-10-26; full page read)
Summaries are in our own words. Fitment is not guaranteed — disclaimer.
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