Attwood’s multi-layer primer bulbs provide the absolute best combination of performance, reliability, safety and compliance to ensure your experience on the water is easier and safer to enjoy, Attwood’s exclusive three-layer design resists collapsing and hardening and ensures high output in temperatures ranging from 18°F to 122°F. Includes high-efficiency check valves with Viton O-rings for improved sealing. Assembled with the same components as Mercury and Quicksilver. Premium materials give the absolute best combination of performance and reliability: No cracking/hardening over time, low permeation for EPA/CARB compliance, excellent priming in extreme cold and hot environments, zero chance of material delamination as seen by some competitor’s products. OEM Equivalent Part Number: OMC17644/174512.
Bulb Size: 3/8″ I.D. Hose
Exclusive three-layer construction provides the best spring-back during priming and excellent resistance to collapse during high-flow engine operation
New high-performance check valve O-rings provide 30% improved priming while keeping optimized flow during engine use (20 to 35% better than spring-loaded designs)
No cracking or hardening over time, low permeation
Excellent priming in cold and hot environments