The B18 family is Honda/Acura’s 1.8-liter engine lineup that most famously powered the Integra in the 1990s. Factory-installed B18 engines appear primarily in the Integra across a couple of generations, with different engine codes depending on market and year.
B18-powered Honda/Acura Integra models
Below are representative factory applications where the B18 was used, noting regional differences where relevant.
- Acura Integra RS/GS/LS (DA; 1990–1993): B18A/B18B family engines
- Acura Integra GSR (DC2; 1994–2001): B18C-series engines for US/Canadian markets
- Acura Integra Type R (DC2; late 1990s, primarily Japan and select markets): B18C5 variant
Engine codes vary by market and year, reflecting US-spec, JDM, and other regional calibrations. If you’re shopping for a B18-powered car, verify the engine code plate and VIN to confirm the exact variant.
Notes on engine variants
The B18 family includes A/B and C-series variants, with C-series powering the performance-focused models and A/B covering the earlier, non-VTEC iterations. The DA Integra used non-VTEC B18A/B18B engines, while the DC2 lineup (GSR and Type R) used B18C-series powerplants, culminating in the high-performance B18C5 for the Japanese Type R. Today, these engines are most commonly encountered in used Integraes and in enthusiast engine-swap projects within the Honda ecosystem.
Summary: The B18 engines were principally installed in the Honda/Acura Integra lineup during the 1990s—most notably the DA Integra and the DC2 generations, with US and Japanese variants. In today’s market, they live on in used cars and in swaps pursued by enthusiasts, rather than as current production powerplants.