Restrictor Plate O-Ring Pack (4)

The Restrictor Plate O-Ring Pack (4) from KING RACING PRODUCTS is an essential maintenance and performance component for Yamaha outboard engines. After decades on the water, any experienced angler knows that restrictor plate o-rings are critical sealing elements that prevent fuel and oil leakage at the restrictor plate assembly—a component integral to engine compression and carburetor regulation. This four-pack ensures you have spares on hand for routine maintenance, emergency repairs, or when upgrading performance settings on your Yamaha-powered boat.

O-rings in the restrictor plate assembly work under constant pressure and temperature cycling; they must seal reliably to maintain proper fuel delivery and engine efficiency. The KING RACING PRODUCTS specification (MPN 6000-OR-YAM) is engineered to OEM standards for Yamaha outboards, ensuring correct durometer hardness and diameter tolerances for a perfect fit. These rings resist degradation from fuel exposure, salt spray, and thermal stress—critical factors when your boat operates in saltwater or demanding freshwater environments where engine reliability directly impacts safety and performance on the water.

Marine technicians, boat owners performing in-house maintenance, and tournament anglers who demand peak engine performance will benefit most from keeping this four-pack in their maintenance kit. Installation is straightforward during restrictor plate service—typically a 15-minute job if you're already familiar with basic outboard disassembly. Having four replacement o-rings on hand eliminates downtime waiting for parts and allows you to perform preventive maintenance before seals fail, keeping your Yamaha-powered vessel running strong during critical fishing trips or extended cruising.