Subaru EA81/EA82 (early 80s-90s). These are still flat engines, preserving the low center of gravity. The chart highlights that while adapters exist to mate the Subaru to the VW transaxle, the water-cooling system demands a front-mounted radiator, cutting into the trunk—a structural and aesthetic compromise.
: You’ll likely need a support bar across the rear to handle the extra weight and a custom flywheel/clutch combo. 3. Subaru Boxer Swap (The "Superu") vw bug engine swap compatibility chart
For those with advanced fabrication skills, several other engines are proven to work: Subaru EA81/EA82 (early 80s-90s)
Larger VW air-cooled engines (1641cc to 2332cc) and the Porsche 356/914 flat-four. These swaps respect the original engineering ethos: no structural cutting, fan housing intact, and the engine remains cantilevered behind the axle. The chart shows these as “bolt-in” with only minor tinwork modifications. : You’ll likely need a support bar across
This is the most popular modern conversion because the flat-four layout fits the Beetle's engine bay well.
If you are planning an engine swap for a classic Volkswagen Beetle, a compatibility chart is . However, a new user should be warned: these charts are often written by mechanics, for mechanics. They assume you already know the difference between a "Type 1," "Type 4," and a "Subaru EJ" conversion kit.