This is a Genuine Kubota piston (+0.25) for the T1400H lawn tractor, manufactured to OEM specification (OEM No. 12181-21910). The piston is made from high-quality aluminium alloy for a strong, lightweight build with excellent heat transfer. It forms the core of the combustion process, helping to restore compression, reduce blow-by, and maintain smooth engine performance. The +0.25 marking indicates a 0.25 mm oversize, intended for engines that have been re-bored to suit an oversize piston during overhaul. Designed for the Kubota T1400H, it is suitable for routine maintenance or full rebuilds carried out by professional users or competent DIY owners. Precision machining supports correct fit with matching OEM components and helps the engine run efficiently and reliably.

Key Features:
– Genuine Kubota part for assured compatibility and quality
– +0.25 mm oversize for use after cylinder re-bore to OEM dimensions
– Aluminium alloy construction for durability and efficient heat dissipation
– Precision-machined crown, skirt, and ring lands for reliable sealing
– Helps restore compression, power delivery, and fuel efficiency
– Designed to withstand regular lawn tractor workloads
– Smooth, accurate fit to reduce downtime during servicing
– Corrosion-resistant, easy-to-clean finish

Typical Applications:
Used during engine repairs or overhauls where the cylinder has been re-bored to accept a +0.25 mm piston. Ideal for restoring performance in Kubota T1400H lawn tractors used for domestic gardens, commercial grounds care, estates, and regular mowing tasks. Suitable for addressing wear, scoring, or loss of compression to keep the machine reliable across the season.

Also known as:
T1400H piston (+0.25), Kubota oversize engine piston 0.25 mm, lawn tractor piston 0.25 mm OS, Kubota T1400H engine piston, replacement piston for Kubota T1400H, OEM piston 12181-21910.

Fits Models:
T1400H

Alternate Part Numbers:
12181-2191-0, 12181-21910, 1218121910

Product Specifications