Crankshaft thrust washers Honda Acura B16 B18 B20 D16 F22 F23 H22 K20 K24

The Honda and Acura petrol engines

The Honda and Acura petrol engines of the B, D, F, H and K families, as well as the ZC, power the Civic, CRX, Integra, Accord, Prelude and CR-V, among others. The B engines (1.6 to 2.0 litres, built from 1988 to 2001) are inline four-cylinders with double overhead camshafts, a die-cast aluminium block and cast-iron liners; the K engines (2.0 to 2.4 litres, introduced in 2001) are inline four-cylinders with an aluminium block.

Thrust washers

Thrust washers take the clutch thrust and set the crankshaft end play. On a tuned engine with a reinforced clutch, this thrust increases. Compared with the original, the ACL Calico version adds a dry film lubricant that reduces friction and wear and protects the thrust washer when oil is lacking. The King version, in lead-free Al20Sn1Cu aluminium, is certified by its manufacturer to meet or exceed the vehicle manufacturer's specifications.

Technical specifications

Technical guide

Each half washer has lubrication grooves on one face. This face fits on the crankshaft side, with the smooth face towards the block or cap. Fitted the wrong way round, the washer deprives the crankshaft bearing face of lubrication and wears it quickly.

Before fitting, coat the crankshaft-side face with assembly grease. Check that the half washers in the block sit flush, fit the cap without forcing it and tighten it following the manufacturer's procedure. Then check the end play with a dial gauge and compare it with the manufacturer's value.

The two brands

	ACL Bearing Company, an Australian manufacturer of high-performance engine bearings since 1949, supplies thrust washers uncoated or with Calico coating.
	King Engine Bearings, an Israeli engine bearing manufacturer since the 1960s, offers its OE Replacement range thrust washers in lead-free aluminium bi-metal.

Construction and advantages

Vehicle compatibility

These thrust washers fit the Honda and Acura petrol engines (engine codes listed by the manufacturers, see the notes above) of the following vehicles: