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Acura RDX Center Caps — the 44732 Family, and the Part Number That Isn't Published
The RDX question sounds specific — does the 2010–2017 Acura RDX use the standard Acura cap, or does it differ by generation? We dug through fitment guides, factory wheel listings and parts sheets to answer it properly. The answer: both generations (2007–2012 and 2013–2018) run the standard Honda/Acura 44732-family cap — 69 mm OD, 64 mm clip ID — the same family as the Accord, Civic, CR-V and Odyssey caps under numbers like 44732-SY8-A100, 44732-S0K-A000 and 44732-S9A-A00.
Why we're confident
Both RDX generations carry the same 64.1 mm hub bore and 5×114.3 bolt pattern on 18×7.5 wheels, and the 44732-family cap is measured at exactly the 69/64 geometry that fits that hub family. A verified-purchase review on a Honda cap listing reports the caps fitting OEM RDX rims — anecdotal, but consistent with everything else.
The honest gap
Here is what does not exist in any source we could find: an RDX-specific OEM cap part number. Bernardi Parts install sheets for 2011, 2012 and 2015 RDX wheels show a center cap in the parts list but publish no number or diameter for it, and no RDX-coded cap listing surfaced anywhere. So the final word on an RDX is the number molded into your own cap's back — or a caliper. Accessory wheels (like the 19″ option) weren't measured in our research either: measure first.
Next steps
Run your numbers through the Cap Finder, or re-check them with the How to Measure walkthrough before you order.
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Related guides
- Honda & Acura Center Caps — the 69 mm 44732 Family
- How to Read the Part Number Molded on the Back of Your Center Cap
- By Brand — the Acura entry
Sources: RDX generation fitment (both 64.1 mm bore, 5×114.3) via hulkoffsets.com, autofiles.com and the STAR wholesale fitment chart; 44732-family measurements and part numbers via eBay chattcentercaps item specifics; Bernardi Parts RDX accessory install sheets (cap shown, no number published). Sizes published as commonly listed — verify by measuring.