Replacement Dome O-Rings for Bikeman Billet Heads

SKU: MC-945K-119
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$5.00 USD
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Replacement Dome O-Rings for Bikeman Billet Heads

Prevent coolant leaks and maintain an airtight combustion seal on your engine with genuine Replacement Dome O-Rings for Bikeman Performance Billet Heads. Fresh O-rings are critical whenever servicing your billet cylinder head, changing dome sizes for altitude adjustments, or performing routine top-end maintenance.

Manufactured from high-grade, heat-resistant Buna synthetic rubber, these O-rings resist coolant degradation, fuel exposure, and severe thermal cycling to keep coolant safely isolated from your combustion chamber.

Key Features

  • High-Temperature Buna Rubber: Premium elastomer material designed to withstand high operational temperatures, coolant additives, and fuel exposure without swelling or shrinking.

  • Essential Maintenance Component: Replaces compressed, brittle, or torn O-rings during dome swaps or top-end engine rebuilds to ensure a leak-free seal.

  • Precision Fitment: Engineered specifically to match the exact groove tolerances of Bikeman Performance billet head shells and removable domes.

O-Ring Sizing & Fitment Guide

  • Buna 215 O-Ring:

    • Fits ALL Polaris Bikeman Billet Head Kits
    • Fits ALL Ski-Doo Bikeman Billet Head Kits
    • Fits Arctic Cat F6 & F7 Billet Head Kits

  • Buna 225 O-Ring:

    • Fits Arctic Cat 2007–2011 1000cc Billet Head Kits

  • Buna 228 O-Ring:

    • Fits Arctic Cat 2007–Present 800cc Billet Head Kits

Product Specifications & Ordering Note

  • PRICING NOTE: Sold Individually (EACH). To replace O-rings on a complete 2-cylinder engine head, you must purchase a Quantity of 2.

  • Material: High-Temp Buna Synthetic Rubber

  • Primary Function: Seals combustion dome to billet head shell to prevent coolant leaks into the cylinder