Piston pin diameter – 38.1mm. 4 x Standard pistons with ALFIN groove. 4 x Unfinishedliners with flange. 1 x Lower gasket sets. Compatible with Ford New Holland 6600, 6610 and 6710 tractors fitted with the BSD444 engine up to July 1987. NOTE – We advise removing and checking with us your old piston and liner dimensions before purchasing. ALL MAJOR CREDIT AND DEBIT CARDS ACCEPTED. VAT is included in the price and an invoice will be provided. 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.