The JCB 02101438 Piston Ring Kit is an authentic OEM component specifically engineered for JCB 444 engines with a 98mm bore. This essential kit restores critical engine compression and maintains proper oil control, which is vital for sustained engine efficiency and reduced oil consumption. Manufactured to JCB's stringent quality standards, it guarantees a precise fit and long-lasting durability across a wide range of compatible JCB machinery, including 3CX and 4CX backhoe loaders, Loadall telehandlers, and JS series excavators.