A: A4.236/6.354.4/A4.212 engine piston B: For Perkins engine details: we can offer the following engines as well: 1. A4.107 2. TEF203. FE354. A3.144/A4.192/MF655. AD3.1526. AD4.203/MF240/3.1527. AT3.152.4 903.278. A4.236/6.354.4/A4.2129. A4.236/A6.354.1/A6.354.4/AD3.152/A6.354.410. AD4.203/MF165/A4.212/A4.236/A6.354/A6.354.111. A4.236 12. A4.21213. AT4.236/MF390T/MF3065/MF307014. AT6.354.415. 1004.4T16. 1006.60T/1006.6T/1004.40T/1004.4T17. 1004.4/1006.6T/1006.618. 1004.40/1004.40T/1004.40TW/1006.60/1006.60T/1004.419. A4.24820. 1103A/1103C/1104C/1104D/1106D21. 4.318.2/MF698/MF285(US)/MF298/MF595/MF592/MF69822. A4.318/MF285/MF595/MF592/MF1085/MF1080C: and also, for tractor engines, we have the following brand: Fiat, John deere, Deutz, Massey Ferguson, Ford/New Holland,MWM,Fendt ...... D: Production details: 1. materials for piston characteristics: Mechanical PropertiesCODEAC8AAC8BAC8CAC9BAC9ATensile Strength Kg/mmT5>22T5>21T5>21T5>20T5>18T6>28T6>28T6>28T6>22T6>18T7>25T7>25T7>25T7>21Hardness HRBT5 57 69T5 57 69T5 57 69T5 57 69T6 64 74T6 64 74T6 64 74T6 64 74T6 63 75T7 55 65T7 55 65T7 55 65T7 55 66T7 54 66Elongation %T5>0.5T5>0.5T5>0.5T5>0.3T6>0.5T6>0.5T6>0.5T6>0.3T6>0.3T7>0.6T7>0.6T7>0.6T7>0.3T7>0.32.produced by the OEM technical drawings or the sample E: Gurantee for the piston: 1. we strictly adhere to the GB1148-82,JB3931-85 and JB3932-85 Criterion 2. send sample for check before delivery F: Packing details: 1. we can design the packing by your requirements but with bigger quantity 2. if need wooden pallets, the customer needs to pay for the wooden pallet charges 3. if no requirements,we offer the Corrugated Carton and vellum paper