| Volkswagen Boxer Engine | |
|---|---|
| Overview | |
| Manufacturer | Volkswagen |
| Production | 1936–2006 |
| Layout | |
| Configuration | Flat-4 naturally aspirated petrol engine |
| Displacement | 1.0 L (985 cc) 1.1 L (1,131 cc) 1.2 L (1,192 cc) 1.3 L (1,285 cc) 1.5 L (1,493 cc) 1.6 L (1,584 cc) 1.7 L (1,679 cc) 1.8 L (1,795 cc) 2.0 L (1,971 cc) |
| Cylinder bore | 70 mm (2.76 in) 75 mm (2.95 in) 77 mm (3.03 in) 83 mm (3.27 in) 85.5 mm (3.37 in) 90 mm (3.54 in) 93 mm (3.66 in) 94 mm (3.70 in) |
| Piston stroke | 64 mm (2.52 in) 69 mm (2.72 in) 66 mm (2.60 in) 71 mm (2.80 in) |
| Chronology | |
| Successor | Volkswagen Wasserboxer engine |
The Volkswagen air-cooled engine is an air-cooled, gasoline-fuelled, boxer engine with four horizontally opposed cast-iron cylinders, cast aluminum alloy cylinder heads and pistons, magnesium-alloy crankcase, and forged steel crankshaft and connecting rods.
There are two distinct families/variations of the aircooled engine namely Type 1 and Type 4. The Type 3 engine is a variation of the Type 1 engine with pancake cooling arrangement.
Variations of the engine were produced by Volkswagen plants worldwide from 1936 until 2006 for use in Volkswagen's own vehicles, notably the Type 1 (Beetle), Type 2 (bus, transporter), Type 3, and Type 4. Additionally, the engines were widely used in industrial, light aircraft and kit car applications.