Multiquip 71429522620 Piston with Rings 0.25mm Oversize - OEM Replacement Part

This oversized piston assembly with rings provides a precision-engineered replacement solution for Yanmar L48V6 diesel engines that require a 0.25mm oversize bore specification. Designed for the air-cooled 4-stroke diesel engine with 13.3 cubic inch (219cc) piston displacement, this component restores compression and engine performance in tamping rammer applications operating at maximum governed speeds up to 3,300 RPM.

The Yanmar L48V6 engine powers rammers delivering 3,600 lbs. per blow impact force at 700 blows per minute. When troubleshooting symptoms like non-uniform amplitude, improper striking, or engine speed irregularities—often traced to clutch slip or internal engine wear—this oversize piston assembly provides the dimensional correction needed after cylinder boring. The 0.25mm oversize specification (48V designation) allows machinists to restore proper piston-to-cylinder wall clearances and compression ratios in worn engines.

Compatible with the following Multiquip tamping rammer models:

• MT-76D2
• MT-86D2

This piston assembly is critical for maintaining the API Classification "CC" or "CD" Grade lubrication system performance specified for these diesel engines. Genuine Multiquip OEM part, sold by an authorized dealer.