Piston height – 124.69mm. To suit bore diameter – 113.54mm. Chamber depth – 24.28mm. Compression height – 70.66mm. Number of rings – 4. Piston pin diameter – 36.5mm. 4 x Pistons, pins & clips. 4 x Piston ring sets. 1 x Head gasket set. 1 x Bottom gasket set. 4 x Conrod bushes. Massey Ferguson 285, 298, 595 and 698 tractors with Perkins A4.318. Replaces original part no. We strongly advise dismantling engine and measuring a piston and liner before purchasing. ALL MAJOR CREDIT AND DEBIT CARD ACCEPTED. All parts are high quality non genuine parts unless otherwise stated. Buyers outside of the UK are reminded that they are responsible for any import duty charges imposed.