37D426 - Piston and ring set (100mm)

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37D426 Piston and Ring Set (100mm / 3.937") for BMC 2.8, 3.8 & 5.7 Engines

Quality replacement piston and ring set suitable for BMC 2.8, 3.8 and 5.7 diesel engines fitted to a wide range of Nuffield and Leyland tractors.

Also listed under part number 37D3106.

Manufactured to the correct specification for reliable engine rebuilding, overhaul and restoration work on classic British tractors from the 1950s through to the 1980s. Ideal for repairing worn or damaged engines while maintaining original engine performance.

Specifications

• Crown diameter: 99.57mm (3.920")
• Compression height: 70.19mm (2.763")
• Overall height: 120.79mm (4.755")
• Chamber diameter: 57.91mm (2.280")
• Chamber depth: 26.97mm (1.062")
• Piston pin diameter: 34.92mm (1.375")
• Number of piston rings: 5

Suitable For

Suitable for the following tractors and engines:

Nuffield Tractors

• Nuffield 342
• Nuffield 460
• Nuffield 10/42
• Nuffield 10/60
• Nuffield 3/45
• Nuffield 4/65

Leyland Tractors

• Leyland 384

Engines

• BMC 2.8 litre 3 cylinder diesel engine
• BMC 3.8 litre 4 cylinder diesel engine
• BMC 5.7 litre 6 cylinder diesel engine

Other Applications

• JCB applications using part number 98800097

Associated Parts

Recommended related parts:
• Piston ring set only –  AHM9025  
• Cylinder liner – 37D1837   
• Cylinder liner – 86K1190    
• Cylinder liner – 37D425   

• Liner seal – 37D1857  / AMK61  

Important Information

Please check piston size, liner type and engine specification before ordering, as different bore sizes and engine variations were fitted during production.

If you are unsure whether this piston and ring set is correct for your tractor or engine, please contact us before purchasing and we will be happy to advise.

We specialise in quality parts for Nuffield, Leyland and Marshall tractors, including genuine old stock, reproduction and hard-to-find replacement parts.