Bomag 05817873 Piston Ring Set

The Bomag 05817873 Piston Ring Set is a genuine OEM component designed for Bomag BW-series single drum rollers, including the BW 211, BW 213, BW 214, BW 216, BW 219, BW 226, and BW 225 families, as well as the C 850 C single drum roller, and MPH 364-2 and RS 360 TIER-4F recycler/stabilizers. Sourced directly from Bomag, this piston ring set meets the exact specifications of the original engine components it replaces, ensuring a correct, drop-in fit with no guesswork. It covers an extensive range of generation-3, -4, -4i, -40, and -50 variants across the BW lineup, making it a versatile engine rebuild staple for fleets running multiple Bomag models. Order with confidence knowing part number 05817873 is the factory-correct choice for your machine.

Key Features

• Genuine OEM Engine Sealing — manufactured to Bomag's exact ring profile, gap tolerance, and material grade, preserving compression and oil control the way the engine was originally built
• Direct Engine Rebuild Fit — this piston ring set installs to the same bore dimensions and ring-groove specifications as the original, eliminating fitment uncertainty during engine overhaul
• Broad BW Single Drum Roller Coverage — fits a wide span of BW 211, BW 213, BW 214, BW 216, BW 219, BW 226, BW 225, and C 850 C single drum rollers across multiple generations, plus MPH 364-2 and RS 360 TIER-4F recycler/stabilizers
• Compression Integrity Restored — worn or broken piston rings cause blow-by, loss of power, and excessive oil consumption; replacing them with this set brings cylinder compression back to proper operating levels
• Fuel Efficiency and Oil Control — correctly seated rings regulate the oil film on cylinder walls and prevent combustion gases from entering the crankcase, keeping fuel consumption and oil burn in check throughout the engine's service life

The piston ring set seals the gap between each piston and the cylinder wall inside the engine, performing three critical jobs: maintaining compression so the engine produces full power, controlling the oil film to prevent excessive oil consumption, and transferring heat from the piston into the cylinder wall for cooling. When piston rings wear, crack, or lose tension, combustion gases leak past the piston — a condition known as blow-by — which robs the engine of power, increases oil consumption, and can contaminate crankcase oil. Replacing a worn set with a correctly specified piston ring set restores cylinder sealing and returns the engine to its designed output and efficiency.

Part Details

Compatibility & Fitment

Verify Before You Order

Fitment is machine-number and revision-specific; always confirm your model and serial number against the fitment list.

Why Buy From DHS Equipment

Every part is verified against the manufacturer's part number before it ships, so what you order is what arrives. We carry parts from leading OEM brands and our own DHS Quality Parts line of professional aftermarket components. Need help finding the right part? Our team is available to confirm compatibility whenever you need it. Orders are processed fast to keep your jobs on track. We don't just sell parts. We keep you jobsite ready.

Questions? Contact our team at [email protected] or 866-611-9369 — DHS Equipment is here to help you maintain peak performance.