Crankshaft thrust washers Renault F4R F7R F7P

Renault F family engines

The Renault petrol engines F1N, F2N, F2R, F3N, F3P, F3R, F4P, F4R, F5R, F7P and F7R power the Renault 19, Clio, Mégane, Laguna, Scénic, Espace and Duster, among others. For these engines, the manufacturer lists a single thrust washer part number, offered in standard size and in 0.10 mm oversize, uncoated. These Renault inline four-cylinder engines have a cast-iron block, an aluminium cylinder head and a toothed-belt-driven overhead camshaft: 8 valves for the F1x, F2x and F3x, 16 valves for the F4x, F5x and F7x.

Thrust washers

The thrust washers take the clutch thrust and set the crankshaft end float. On a modified engine with a reinforced clutch, this thrust increases. The uncoated ACL version is offered in the original size and in an oversize of 0.10 mm.

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 brand

ACL Bearing Company, an Australian manufacturer of high-performance engine bearings since 1949, supplies uncoated thrust washers for these engines.

Construction and advantages

Vehicle compatibility

These thrust washers fit the Renault F4R, F7R, F7P and related engines (engine codes F1N, F2N, F2R, F3N, F3P, F3R, F4P, F4R, F5R, F7P, F7R) of the following vehicles: