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Rebuild kit fits 503 engines. Standard size piston, full gasket set withseals. Includes 2 pistons, 2 ring sets(2 rings per piston), 2 wrist pins, 2wrist pin bearings, 4 circlips, crankshaft O-rings/ plugs, 2 base gaskets, 2head gaskets, 4 exhaust gaskets, 4 intake gaskets, MAG and PTO seals. Piston isTeflon - molybdenum coated to reduce friction, resist seizure and improvedurability.
Standard size piston (71.93mm). Over size available at same price, contact us for .5mm oversize.
This kit is for 1989 and older engines which have smaller MAG seal.
