STIHL BR420 Piston Rings Only | Sold Per Ring

Sold Per Ring! Genuine STIHL Engine Piston Rings (46mm x 1.5mm) Restore factory-standard compression, power, and fuel efficiency to your machinery with this Original STIHL Piston Ring Set. Worn or scored piston rings cause lost compression, hard starting, and a noticeable drop in cutting or blowing power. Replacing them with genuine OEM rings ensures a flawless, low-friction seal against the cylinder wall, protecting your engine's powerhead from severe internal damage. Crafted from high-grade, heat-resistant alloy, these original parts are engineered to withstand the continuous high-RPM workloads of professional chainsaws, backpack leaf blowers, and mistblowers. Specifications Diameter: 46 mm Thickness: 1.5 mm Features 100% Original STIHL Spare: Guarantees precise tension and metallurgy for minimal cylinder wear. Restores Engine Power: Eliminates pressure leaks (blow-by) to maximize throttle response and torque. Long-Lasting Performance: Built to handle the high heat and extreme operating conditions of commercial outdoor power equipment. Exact Model Compatibility This genuine 46mm piston ring set is a direct replacement for the Cylinder / Crankcase assemblies of the following STIHL models: Chainsaws 028 / 028 W / 028 WB / 028 Q (Fits Cylinder and Muffler assemblies) 029 (Fits Cylinder 029) MS 290 (Fits Cylinder) 034 / 034 S / 034 FB (Fits Cylinder) 034 AV Series — AVEQ, AVEQW, AVEQ-FD, AVSEQ, AVSEQW, AVSEQWN, AVSEQN (Fits Cylinder) Backpack Leaf Blowers & Mistblowers BR 380 / BR 400 / BR 420 (Fits Crankcase and Cylinder) SR 400 / SR 420 (Fits Crankcase and Cylinder)