Wha does RAx mean? It's the chassis code that
Identifies the years/engine in your Odyssey.
RA1: 2.2L non vtec, fwd
(same as the US 95-97 Odyssey and 96-97 Oasis)
RA2: 2.2L non vtec, awd
RA3: 2.3L vtec, fwd (same as the US 98 Odyssey and 98-99 Oasis)
RA4: 2.3L vtec, awd
