Yamaha Spring Retainer – SKU 6S5‑R2358‑00‑00

A healthy valve train starts with parts you can trust. This little “top‑hat” retainer sits atop every valve spring in Yamaha’s 1.8‑liter HO and SVHO engines, keeping each coil centered and secure as the tach sweeps past 7,000 rpm. Yamaha machines it from heat‑treated chromoly steel, then applies a dark phosphate finish that laughs off hot oil, acid fumes, and the stray salt spray that sneaks under the cover.

• OEM‑perfect fit – precision‑cut to lock onto factory keepers with zero lapping or shims
• Lightweight profile – trims valve‑train mass to protect cam lobes during long wide‑open runs
• Corrosion armor – phosphate coating resists rust far longer than bare‑metal aftermarket copies
• Wide compatibility – direct replacement for late‑model 1.8 L WaveRunner GP/FX, Yamaha jet‑boat engines, and F‑series outboards sharing the block

Swap out any pitted or worn retainers during your winter tear‑down and you’ll head into next season with rock‑solid spring tension, steadier idle, and snappier throttle response. It’s a small piece that safeguards pistons, valves, and every hard‑earned weekend on the water.