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A genuine INA 21mm x 15mm pilot (spigot) bearing. It sits in the flywheel end of the crankshaft and centers the gearbox input shaft. The same bearing covers an unusually wide range of Ford engines, plus the Mazda MZR, so it suits Formula Ford 1600 (Kent), F2000 on Pinto or Zetec power, and the MZR-powered Elan DP08.
The 15mm bore fits the input shafts of the Ford- and VW-based transaxles normally used with these engines, including Hewland and Webster. On Zetec and Duratec the 21mm OD fits the crank, but the bore does not suit the original front-drive gearboxes; it is correct for rear-drive race and kit-car conversions (Caterham, Locost and similar).
Tip: grease the rollers every time the gearbox is mated to the engine. Some V4/V6 applications use a different size (21 x 12.7mm or 19 x 12.7mm); check before ordering.
