Sierra makes the service and wear parts that keep a marine engine running. Impellers, water pumps, thermostats, fuel pumps, and more are cross referenced to the OEM numbers. Marine engines live hard and the service parts that wear out are exactly what Sierra builds to OEM replacement standards. This collection covers the maintenance and repair parts that keep an outboard or sterndrive running. All parts are engineered to drop in for the original equipment piece usually at a better price than the dealer. The key to ordering right is matching the part to your exact engine. Cross reference by OEM number The surest way to get the right part is the original equipment number. Sierra lists the Mercury MerCruiser OMC...
Upgrade Your Outboard with the Reliable Sierra 18-6435 Starter Power up your marine adventures without hesitation using the Sierra 18-6435 starter from Sierra Engine Parts. Designed as a...
Upgrade Your Outboard with Reliable Crankshaft Protection Keeping your Mercury outboard running smooth means paying attention to the details—like the crankshaft oil seal that stands guard against leaks...
Upgrading or repairing your Mercury outboard just got simpler with the Sierra 18-0339 gasket, a direct match for the OEM 27-43006 part. Designed specifically for 8-cylinder engines, this...
Revitalize your Mercury or Mariner outboard with the reliable Sierra 18-5642 starter, a precision-engineered replacement that matches the performance of the original Mercury-Mariner 50-893891T unit. Designed for boaters...
Ensuring your outboard engine's hydraulic system runs smoothly is crucial for responsive steering and peak performance on the water. The Sierra gasket for hydraulic connections steps in as...
Keep your outboard engine running smoothly on the water with the Sierra 18-0172 oil seal, a reliable replacement designed to prevent leaks and protect vital components. Marine enthusiasts...
Why Choose Sierra 18-0137 Gaskets for Your Outboard Engine Marine enthusiasts know the frustration of a leaky gasket disrupting a day on the water. The Sierra 18-0137 gasket...
Keep your compact outboard running cool and reliable with this precision-engineered replacement impeller. Designed specifically for smaller Evinrude and Johnson engines, it restores optimal water pump performance, preventing...
Keep your Mercury 8.1L High Output engine running at peak performance with the Sierra 18-43017 thermostat. Designed specifically for inline models, this 160-degree thermostat ensures precise temperature regulation,...
Upgrade your outboard motor's performance with the Sierra 18-7375N carburetor, a reliable aftermarket solution engineered to match the exact specifications of OEM part MC#3310-864942A01. Boaters trust Sierra Engine...
Discover the Reliability of the Sierra 18-3713 Lock Nut for Mercruiser Engines Keeping your Mercruiser engine running smoothly on the water starts with the right fasteners. The Sierra...
Keep your marine engine running smoothly on the water with the Sierra 18-15121 Serpentine Belt. In the demanding world of boating, where engines face constant exposure to saltwater...
Keep your marine engine running smoothly with the Sierra 18-15103 serpentine belt, a dependable replacement designed for the demands of boating. Unlike standard automotive belts, this one handles...
Protecting your boat's electrical system from overloads is crucial for safe and reliable performance on the water. The Sierra 18-15501 circuit breaker steps in as a robust 60-amp...
Upgrading your marine engine's freeze plugs doesn't have to be a headache, especially when rust starts eating away at those vulnerable spots. This brass freeze plug kit steps...
Upgrade your marine engine's ignition system with the reliable Sierra 18-61051 T-Bolt screws designed specifically for distributor caps. Sold in a convenient 4-pack, these machine screws provide a...
Enhance Your Volvo Penta Engine Reliability with the Sierra 18-69550 Circuit Breaker Boat owners know that a dependable electrical system is the backbone of smooth outings on the...
Discover the Reliability of a Precision-Engineered Head Gasket Upgrading your marine engine with a dependable head gasket isn't just about fixing a leak—it's about restoring peak performance and...
Sierra makes the service and wear parts that keep a marine engine running. Impellers, water pumps, thermostats, fuel pumps, and more are cross referenced to the OEM numbers.
Marine engines live hard and the service parts that wear out are exactly what Sierra builds to OEM replacement standards. This collection covers the maintenance and repair parts that keep an outboard or sterndrive running. All parts are engineered to drop in for the original equipment piece usually at a better price than the dealer. The key to ordering right is matching the part to your exact engine.
The surest way to get the right part is the original equipment number. Sierra lists the Mercury MerCruiser OMC Johnson Evinrude Yamaha and other OEM numbers each part replaces. Pull the number off the worn part or the parts diagram and match it directly. That beats guessing every time.
The raw water impeller is the single most important maintenance item on most marine engines. It dries out and cracks with age. A failed impeller means an overheated motor in minutes. Replace it on schedule usually every season or two. Buy the full water pump kit when the housing or wear plate is also tired so you do the job once.
A stuck thermostat runs the engine too hot or too cold. Both conditions cause trouble. If the motor overheats or never reaches operating temperature the thermostat is a cheap and common fix. Match the temperature rating to your engine spec.
A weak fuel pump starves the engine at higher RPM. Tired ignition parts cause hard starts and misfires. Sierra offers replacement fuel pumps coils and ignition components matched to specific engines. Confirm the make model and year before ordering so the part fits and performs.
Without the OEM number you need the engine make horsepower model and year. Components changed across model years. Have that information ready so the part you order actually fits the motor in your boat. Not sure which part your engine needs. Give our crew your engine make model year and the OEM number if you have it. We will match the exact Sierra part so the repair goes back together right and runs.
Regular inspection of cooling and fuel systems prevents most breakdowns on the water. Keep a spare impeller and thermostat aboard for quick swaps during long trips. Always shut off the fuel supply and disconnect the battery before starting any engine work. Follow torque specs when reinstalling pump housings to avoid leaks. These steps keep your engine reliable season after season.
Use the original equipment number. Sierra lists the Mercury OMC Yamaha and other OEM numbers each part replaces. Match the number off the worn part or parts diagram. Otherwise use your engine make model horsepower and year.
The raw water impeller is the most important maintenance item on most marine engines. Replace it every season or two. A failed impeller overheats the engine in minutes. Buy the full water pump kit if the housing or wear plate is also worn.
A stuck thermostat makes the engine run too hot or never reach operating temperature. If you see overheating or a motor that stays cold the thermostat is a cheap and common fix. Match the temperature rating to your engine spec.
A weak fuel pump can starve the engine at higher RPM. Sierra offers replacement fuel pumps matched to specific engines. Confirm your engine make model and year so the replacement fits and restores fuel delivery.
Sierra parts are engineered to replace the original equipment piece with the same fit and function. They are built to marine standards. They are a trusted aftermarket choice for service and wear parts at a better price than the dealer.
