Bomag 06550045 Radiator Cap

The Bomag 06550045 Radiator Cap is a genuine OEM component designed for a wide range of Bomag single drum rollers, pavers, cold milling machines, refuse/landfill compactors, soil compactors, and recycler/stabilizer equipment. As a direct OEM replacement, this radiator cap maintains the correct pressure rating your cooling system depends on, ensuring consistent thermal management across demanding compaction and milling applications. This part fits an extensive lineup of BW-series single drum rollers, including the BW 177, BW 179, BW 211, BW 212, BW 213, BW 214, BW 215, BW 216, BW 218, BW 219, BW 220, BW 226, and BW 332, as well as the BF 600 P-2 paver, BM 500/15 and BM 600/15 cold milling machines, BC-series refuse/landfill compactors and soil compactors, and the RS 360 TIER-4F recycler/stabilizer.

Key Features

• OEM Pressure-Rated Seal — engineered to the exact pressure specification of the Bomag cooling system, preventing premature coolant loss or boil-over under heavy-load operating conditions
• Drop-In Compatibility — replaces the original cap using the factory filler neck thread and seating surface, so installation requires nothing more than a twist to lock
• Broad Bomag Coverage — fits BW-series single drum rollers including the BW 177, BW 213, BW 216, and BW 226 families, plus the BF 600 P-2 paver, BM 500/15 and BM 600/15 cold milling machines, BC-series refuse/landfill compactors and soil compactors, and the RS 360 TIER-4F recycler/stabilizer
• Cooling System Integrity — a correctly rated radiator cap holds the system at the designed pressure threshold, raising the coolant's boiling point and protecting the engine from heat damage during sustained heavy-duty cycles
• Pressure-Relief Safety — the integrated relief valve vents excess pressure before it can rupture hoses or damage the radiator core, making cap condition a genuine safety and system-protection concern on any pressurized cooling circuit

The radiator cap seals the cooling system and regulates its operating pressure. By holding coolant under pressure, it raises the boiling point of the fluid and allows the engine to run at its designed temperature without losing coolant to evaporation or boil-over. When a radiator cap wears out, its internal seal and pressure-relief valve lose their ability to hold or release pressure accurately — leading to coolant loss, overheating, and potential engine damage that far outpaces the cost of timely cap replacement.

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.